研究者詳細 - 井料　美帆

論文 - 井料　美帆

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Impact of refuge island in two-lane roads on pedestrian behavior: a virtual reality study 査読有り国際共著

ul Haq, MF; Iryo-Asano, M; Alhajyaseen, W; Samson, CJR; Zhu, H

CANADIAN JOURNAL OF CIVIL ENGINEERING 52 巻 ( 2 ) 頁： 197 - 212 2025年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Canadian Journal of Civil Engineering

Crashes involving pedestrians are particularly common at unsignalized mid-block crosswalks, where, sometimes, vehicles do not yield to pedestrians. A refuge island (RI) is a countermeasure at mid-block crosswalks on two-lane roads to improve safety in pedestrian–vehicle conflicts. This study investigates the impact of RI at unsignalized mid-block crosswalks on pedestrian crossing behavior and conflict severity, considering vehicle approach speed and approach direction. A virtual reality experiment was designed to compare pedestrian crossing behaviors in different scenarios. Results revealed that at higher vehicle approaching speeds, pedestrians tended to accept shorter gaps, leading to a higher rate of unsafe crossings. Generally, in RI setting, pedestrians accepted significantly shorter gaps, which increases the operational efficiency of the crosswalk without significantly affecting the severity of conflicts with vehicles. Furthermore, the subjective evaluation of the pedestrians after the experiment clearly indicated their preference for the RI setting, as they reported a safer crossing experience.

DOI： 10.1139/cjce-2023-0443

Web of Science

Scopus

A method for evaluating the functional hierarchy of road networks 査読有り

T. Sekihara, Y. Kakimoto, H. Nakamura, M. Iryo, X. Zhang

Transport Policy 155 巻頁： 178 - 188 2024年6月

Modeling the Pedestrian Crossing Decision Behavior Based on Vehicle Deceleration Patterns Using Virtual Reality Environment 査読有り国際共著国際誌

Muhammad Faizan ul Haq, Miho Iryo-Asano, Wael K.M. Alhajyaseen

International Journal of Intelligent Transportation Systems Research 22 巻頁： 245 - 258 2024年3月

道路利用特性指標を用いた道路ネットワークの機能階層性の評価手法査読有り

関原敏裕, 柿元祐史, 中村英樹, 井料美帆, 張馨

交通工学論文集 9 巻 ( 2 ) 頁： A_69 - A_78 2023年2月

バーチャルリアリティ実験による歩行者の横断位置選択行動分析査読有り

中島孝規, 井料美帆

交通工学論文集 9 巻 ( 2 ) 頁： A_253 - A_262 2023年2月

Defensive or competitive Autonomous Vehicles: Which one interacts safely and efficiently with pedestrians? 国際共著

Zhu, H; Alhajyaseen, W; Iryo-Asano, M; Nakamura, H; Dias, C

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS 606 巻 2022年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physica A: Statistical Mechanics and its Applications

The emergence of Autonomous Vehicles (AVs) could provoke unexpected challenges in urban traffic environments. One such crucial challenge is the conflicts between pedestrians and AVs, particularly on unsignalized mid-block crosswalks (UMC), where pedestrians are exposed to the AV flow. This study investigates the efficiency and safety performance of a UMC in the presence of both AVs and pedestrians considering the diversities in their behaviors. Through empirical analyses, two pedestrians’ crossing decision models are built and four groups of speed profiles are classified. Meanwhile, based on previous literature, defensive and competitive driving strategies are assumed for AVs. The simulation is implemented on an agent-based framework that can dynamically reproduce the kinematic interactions between pedestrians and vehicles. Results indicated that with a reasonable safety margin (2.5 s), percentages of low post encroachment time events for competitive AVs with different pedestrian types are smaller than defensive AVs with differences of 0.2% to 2.9%. The average delays of competitive AVs for all pedestrian types are smaller than defensive AVs with a maximum estimated difference of 39 s. Moreover, the analysis showed that lowering the speed limit may reduce the crash rate of competitive AV up to 0%. It is also found that the pedestrians who make reckless crossing decisions and change their speed drastically during the crossing process are more likely to incur crashes with competitive AVs. Therefore, if pedestrian behaviors can be regulated reasonably, competitive AVs with appropriate parameter settings are most suitable for UMC in the future.

DOI： 10.1016/j.physa.2022.128083

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Scopus

Investigating driver reactions to movements of autonomous vehicle in permitted right turn through driving simulator experiments

Zhu, H; Zhu, SJ; Iryo-Asano, M; Nakamura, H

TRANSPORTATION RESEARCH PART F-TRAFFIC PSYCHOLOGY AND BEHAVIOUR 89 巻頁： 385 - 398 2022年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Transportation Research Part F: Traffic Psychology and Behaviour

Traffic safety has always been a hot topic for human-driven (HDV) and autonomous vehicles (AV) mixed flow. The conflict between permitted right-turn vehicles (PRT) and opposing through vehicles (TH) at signalized intersections (left-handed traffic) is extraordinarily critical. AVs with aggressive behaviors are able to accept short gap time without losing safety. However, such a turning maneuver may lead to dangerous feelings and cause unexpected reactions of approaching drivers. This study aims to investigate and model drivers’ reactions in TH movements to PRT AVs considering the trust degree of drivers to AVs. Questionnaire surveys and driving simulator experiments were conducted for 41 participants. Results reveal that the right turn timing of PRT AV will significantly influence drivers’ reactions. Basically, TH drivers will brake with a high probability under the situation of small expected post encroachment time (PET). It is also found that female drivers and drivers with low trust in AVs are more vigilant to PRT AVs than other drivers. Based on this finding a two-layer model for reproducing TH drivers’ reactions to PRT AVs is proposed. The first layer is to determine the braking decision and the second layer is to calculate the parameters of braking behaviors (brake lag, braking time, and speed drop). The significance and coefficients variables in these models proved that the trust in AV will influence drivers’ decisions and braking behaviors (brake lag and braking time). The more the drivers trust AVs, the smaller the expected PET to AVs they can accept for passing without braking, and the more gently they will brake (longer brake lag and shorter braking time) due to the cutting in of PRT AVs. This effect will become significant after drivers have experienced several interactions with AVs.

DOI： 10.1016/j.trf.2022.06.018

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Scopus

Can automated driving prevent crashes with distracted Pedestrians? An exploration of motion planning at unsignalized Mid-block crosswalks 国際共著

Zhu, H; Han, TY; Alhajyaseen, WKM; Iryo-Asano, M; Nakamura, H

ACCIDENT ANALYSIS AND PREVENTION 173 巻 2022年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Accident Analysis and Prevention

Pedestrian distraction may provoke severe difficulties in automated vehicle (AV) control, which may significantly affect the safety performance of AVs, especially at unsignalized mid-block crosswalks (UMCs). However, there is no available motion-planning model for AVs that considers the effect of pedestrian distraction on UMCs. This study aims to explore innovative approaches for safe and reasonable automated driving in response to distracted pedestrians with various speed profiles at UMCs. Based on two common model design concepts, two new models are established for AVs: a rule-based model that solves motion plans through a fixed calculation procedure incorporating several optimization models, and a learning-based model that replaces the deterministic optimization process with policy-gradient reinforcement learning. The developed models were assessed through simulation experiments in which pedestrian speed profiles were defined using empirical data from field surveys. The results reveal that the learning-based model has outstanding safety performance, whereas the rule-based model leads to remarkable safety problems. For distracted pedestrians with significant crossing-speed changes, rule-based AVs lead to a 5.1% probability of serious conflict and a 1.4% crash probability. The learning-based model is oversensitive to risk and always induces high braking rates, which results in unnecessary efficiency loss. To overcome this, a hybrid model based on the learning-based model was developed, which introduces a rule-based acceleration value to regularize the action space of the proposed learning-based model. The results indicate that the hybrid approach outperforms the other two models in preventing crash hazards from distracted pedestrians by employing appropriate braking behaviors. The high safety performance of the hybrid models can be attributed to the spontaneous slowing down of the vehicle that initiates before detecting pedestrians on UMCs. Although such a cautious driving pattern leads to extra delay, the time cost of the hybrid model is acceptable considering the significant improvements in ensuring pedestrian safety.

DOI： 10.1016/j.aap.2022.106711

Web of Science

Scopus

PubMed

A novel hierarchical cooperative merging control model of connected and automated vehicles featuring flexible merging positions in system optimization

Tang, ZX; Zhu, H; Zhang, X; Iryo-Asano, M; Nakamura, H

TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES 138 巻 2022年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Transportation Research Part C: Emerging Technologies

Merging sections on freeways are typical bottlenecks for traffic efficiency and safety. The connected and automated vehicles (CAV) technology has great capability in improving traffic performance of merging bottlenecks. Current approaches of system optimal cooperative merging control assume single fixed merging point (CMC-SMP) for on-ramp vehicles to reduce the complexity of their models. Non-fixed merging positions have the potential to further improve merging operations but may lead to the computational explosion. To solve this core contradiction, this study proposes a novel hierarchical system optimal cooperative merging control model considering flexible merging positions (CMC-FMP) to realize safe and efficient merging processes. The upper-level – the tactical planning model is formulated as a non-convex mixed integer quadratically constrained programming, aiming at minimal total travel time in the control zone. It optimizes not only the merging sequence but also vehicles’ critical states in merging processes, such as the state of on-ramp vehicles when they merge. The lower-level - the motion planning model generates feasible trajectories and the next step actions for every vehicle. A Monte Carlo Tree Search-based decomposition algorithm (MCTS-DA) is further designed to improve the computational efficiency of the tactical planning model. Meanwhile, solutions of MCTS-DA are proved to have good optimality compared to the direct solving method. A batch-based scheme is developed to realize real-time control. The results reveal that the average delays of CMC-FMP are remarkably lower than those of CMC-SMP. Especially in low on-ramp ratio scenarios, the difference in improvement can reach 64%. Furthermore, the sensitivity analysis indicates that large safe merging margins and short merging sections are disadvantageous for traffic efficiency for the merging flow controlled by CMC-FMP.

DOI： 10.1016/j.trc.2022.103650

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Scopus

パーソナルモビリティと歩行者の混在交通における危険度評価指標の提案査読有り

菱川貴之, 井料美帆

土木学会論文集D3 77 巻 ( 5 ) 頁： 893 - 903 2022年4月

滞留者が混在する歩行空間における通行機能の主観的評価査読有り

井料美帆, 渡辺匠

土木学会論文集D3 77 巻 ( 5 ) 頁： 1057 - 1066 2022年4月

電動キックボードの希望通行位置選択に関する要因分析査読有り

井料美帆, 鈴木弘司, 川合琉介

IATSS Review 46 巻 ( 3 ) 2022年2月

Safety evaluation of personal mobility vehicles and pedestrians under mixed traffic flow using traffic simulation 査読有り

Hishikawa T., Iryo-Asano M.

Asian Transport Studies 8 巻 2022年1月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Asian Transport Studies

Personal mobility vehicles (PMVs) are small and slow vehicles that are designed to move within relatively dense pedestrian traffic on sidewalks or shared-use paths. Although various types of PMVs have been developed recently, the requirements of PMV performance in various traffic conditions are yet to be discussed in depth. This study aims to evaluate the impact of geometry and traffic conditions on the safety of mixed traffic flow between pedestrians and standing-type PMVs using a traffic simulation model. As a surrogate safety measure, an objective risk index based on collision probability and collision intensity is proposed. The results of the traffic simulations showed that the objective risk was affected by sidewalk width, traffic demand, and PMV movement parameters. A linear regression model was estimated to explain the safety index as a function of these variables, and combinations of applicable settings for PMV–pedestrian mixed traffic flow in terms of safety are discussed.

DOI： 10.1016/j.eastsj.2021.100049

Scopus

Macroscopic analysis on the frequency and severity of pedestrian crashes on National Roads in Metro Manila, Philippines 国際誌

Obinguar, DD; Iryo-Asano, M

IATSS RESEARCH 45 巻 ( 4 ) 頁： 521 - 529 2021年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IATSS Research

Pedestrians are the most vulnerable road users; thus, understanding the primary factors that lead to pedestrian crashes is a chief concern in road safety. However, owing to the limitations of crash data in developing countries, only a few studies have evaluated the comprehensive characteristics of pedestrian crashes, specifically on different road types. This study attempted to develop pedestrian crash frequency and severity models on national roads by using the road characteristics and built environment parameters, based on the road crash data (2016–2018) that involved pedestrians in Metro Manila, Philippines. Remarkable findings included primary roads, presence of footbridges, road sections with bad surface conditions, and increased fractions of commercial, residential, and industrial roads, which exhibited a greater likelihood of pedestrian crashes. Crashes involving elderly pedestrians, heavier vehicles, late-night hours, fair surface conditions, and open spaces were associated with increased likelihoods of fatal outcomes. Essentially, this study provides a macroscopic perspective in understanding the factors associated with the severity and frequency of pedestrian crashes, and it would aid the authorities in identifying proper countermeasures.

DOI： 10.1016/j.iatssr.2021.06.003

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Scopus

Interactions between autonomous vehicles and pedestrians at unsignalized mid-block crosswalks considering occlusions by opposing vehicles 査読有り国際共著

Zhu Hong, Iryo-Asano Miho, Alhajyaseen Wael K. M., Nakamura Hideki, Dias Charitha

ACCIDENT ANALYSIS AND PREVENTION 163 巻 2021年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Accident Analysis and Prevention

Visibility can be identified as one of the critical determinants for the safety performance of autonomous vehicles (AVs) on unsignalized mid-block crosswalks (UMC), which may be significantly influenced by build-up environment and surrounding vehicles. This study investigates the safety performance when AVs interact with pedestrians approaching from far-side sidewalks to UMCs considering the visual occlusion of opposing vehicles. A mathematical model is proposed for judging the visibilities of objects from observers’ location under the impact of visual obstacles and is embedded into an agent-based pedestrian-vehicle interaction framework. Two yielding decision modules is assumed for AVs: The normal decision module implements the pedestrian priority rule simply based on the current detectable information, whereas the memory aid decision module extends AVs’ detection abilities by incorporating the memory data. Through simulation experiments, it is found that the percentages of short post encroachment time (%SPET) between AVs and far-side pedestrians reach peaks when the pedestrian flow rate is 300–400 ped/h. When opposing vehicles are in stationary queue conditions, %SPETs are only sensitive to the net distance between the last opposing vehicles in the queue and crosswalks (Dqueue). As the Dqueue decreases to lower than 15 m, %SPETs start to increase drastically. However, when opposing vehicles are in free flow conditions, %SPETs are influenced by multiple factors such as pedestrians’ crossing decisions, sizes and flow rates of opposing vehicles. Furthermore, only when opposing vehicles are in free flow conditions, memory aid AVs can significantly eliminate the impacts of opposite vehicles. Finally, several countermeasures are developed to enhance the visibility and safety at UMCs based on the findings of this study.

DOI： 10.1016/j.aap.2021.106468

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Scopus

名古屋市の拠点エリアにおけるウォーカブルな空間デザイン要件の導出査読有り

伊藤亜由美, 中村一樹, 井料美帆, 野地寿光

都市計画論文集 56 巻 ( 3 ) 頁： 819 - 826 2021年10月

Efficiency and Safety Evaluation of Left-turn Vehicles and Crossing Pedestrians in Signalized Intersections under the Autonomous Vehicle Mixed Flow Condition 査読有り

Pan Ang, Zhang Xin, Iryo-Asano Miho, Nakamura Hideki

INTERNATIONAL JOURNAL OF INTELLIGENT TRANSPORTATION SYSTEMS RESEARCH 2021年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：International Journal of Intelligent Transportation Systems Research

Field experiments of autonomous vehicles (AVs) have been conducted in many countries. However, efficiency evaluation of AV mixed flow and safety evaluation of conflicts between AVs and pedestrians in the real-world case are still limited. This study aims at evaluating the efficiency and safety of left-turn (LT) vehicles and pedestrians in signalized intersections, under the condition of AV mixed flow, by developing a simulation model. Post Encroachment Time (PET) and LT capacity were obtained. Further, gap/lag acceptance behavior and reaction time of LT vehicles were found to be critical parameters that affect efficiency and safety evaluations.

DOI： 10.1007/s13177-021-00276-z

Web of Science

Scopus

A novel agent-based framework for evaluating pedestrian safety at unsignalized mid-block crosswalks 査読有り国際共著国際誌

Zhu Hong, Almukdad Abdulkarim, Iryo-Asano Miho, Alhajyaseen Wael K. M., Nakamura Hideki, Zhang Xin

ACCIDENT ANALYSIS AND PREVENTION 159 巻 2021年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Accident Analysis and Prevention

A critical safety problem in road networks is the conflicts on unsignalized crosswalks. Thus, a proactive approach to assess pedestrian safety performance is required. Simulating the microscopic road user behavior in a virtual platform is one of the typical approaches. However, current simulation tools are not flexible enough to properly reproduce various behaviors of pedestrians and drivers considering their interactions with the road environment and other road users. Therefore, the objective of this paper is to propose a novel agent-based framework for evaluating pedestrian safety at unsignalized crosswalks. Unsignalized mid-block crosswalks with refuge islands (UMCR) are considered as an example facility to implement the proposed framework, where relevant behavioral elements such as the reaction time, visual field with obstacles, and minimum safety margin time are addressed. Not only the pedestrian-vehicle interaction is modeled but also the vehicle-vehicle interaction is considered. Empirical validation on a UMCR shows that the proposed framework can reproduce reliable distributions of the post encroachment time compared to the observed distributions within an acceptable error range. The sensitivity analysis reveals that the high reaction time of drivers, small safety margin time, and visual obstacles near crosswalks increase the probability of serious conflicts. The results also show that the framework can reproduce traffic crashes under assumed extreme road conditions.

DOI： 10.1016/j.aap.2021.106288

Web of Science

Scopus

サイクル長短縮による信号交差点の右折待ち行列延伸渋滞解消効果の実証分析査読有り

立松秀樹,森本清誠,田中淳,泉典宏,中村英樹,鈴木弘司,井料美帆,柿元祐史

交通工学論文集 7 巻 ( 2 ) 頁： B_6 - B_13 2021年2月

信号交差点が連続する補助幹線道路における信号サイクル長短縮効果の実証実験査読有り

牧野修久,小林圭,池水丈明,中村英樹,鈴木弘司,井料美帆,柿元祐史

交通工学論文集 7 巻 ( 2 ) 頁： B_55 - B_61 2021年2月

Estimation of Waiting Pedestrian Occupancy-time at Signalized Crosswalks for Turning Vehicle Maneuver Analysis 査読有り

Emagnu, Y. M., Zhang, X., Iryo-asano, M., Nakamura, H.

Proceedings of 100th Annual Meeting of Transportation Research Board 頁： 17 2021年1月

パーソナルモビリティと歩行者の混在交通における危険度評価指標の提案

菱川貴之,井料美帆

土木計画学研究・講演集 62 巻頁： 9 2020年11月

道路利用特性指標と道路ネットワークの機能階層性の関連分析

関原敏裕,柿元祐史,中村英樹,井料美帆

土木計画学研究・講演集 62 巻頁： 9 2020年11月

A Study on Expected Blockage Time of Left Turning Vehicles under the Influence of Pedestrians at Signalized Intersections

Emagnu, Y. M., Zhang, X., Iryo-asano, M., Nakamura, H.

62 巻頁： 8 2020年11月

Developing a Lane Flow Distribution Estimation Model in Weaving Segments of Urban Expressways

Zhou, Z., Nakamura, H., Iryo-Asano, M., Kakimoto, Y.

62 巻頁： 8 2020年11月

Pedestrian Presence Probability Distribution under High Demand Conditions at Signalized Crosswalks

Emagnu, Y. M., Iryo-asano, M., Nakamura, H.

61 巻頁： 7 2020年6月

Modeling Traffic Flows on Urban Arterials Considering the Downstream Influence 国際共著国際誌

Zhu Hong, Nakamura Hideki, Alhajyaseen Wael, Iryo-Asano Miho

TRANSPORTATION RESEARCH RECORD 2674 巻 ( 5 ) 頁： 475 - 485 2020年5月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Transportation Research Record

Arterials are important transportation facilities, undertaking the two functions of mobility and accessibility. In the urban area, signalized intersections along arterials are usually closely spaced and bear heavy traffic pressure. Capacities of intersections can be reduced by downstream intersections even without having spillback. This effect will be accumulated and amplified back along the traffic direction and may lead to severe congestion in the upstream intersection which can be frequently observed, especially during peak hours. However, existing traffic simulators cannot capture this phenomenon accurately because they ignore the capacity drop before spillback happens. In this study, downstream influence is quantified by a virtual optimal speed (vop). vop is the speed by which the upstream platoon reaches the endpoint of the queue ahead when the last vehicle in the downstream queue just starts. Based on that, two piecewise regression models, for start-up lost time and saturation flow rate, are formulated to estimate the capacity reduction. These regression models are further introduced to improve the modified cell transmission model (CTM). The result of the simulation experiment shows that the proposed CTM model has better performance in simulating traffic flow on signalized arterials than the existing CTM, especially in reproducing the traffic congestion in upstream. The analysis emphasized the importance of considering the downstream influence when simulating the traffic on signalized arterials. Finally, a sensitivity analysis is designed to further reveal the causes of upstream congestion.

DOI： 10.1177/0361198120916477

Web of Science

Scopus

街路における歩行者の滞留地点選択に関する研究査読有り

菱川貴之,井料美帆

土木学会論文集D3 75 巻 ( 6 ) 頁： I_433 - I_443 2020年4月

自動運転車の挙動と回避性能が歩行者の横断判断に与える影響分析査読有り

可児匠, 井料美帆

交通工学論文集 6 巻 ( 2 ) 頁： 87 - 96 2020年2月

Modeling Trajectories and Trajectory Variation of Turning Vehicles at Signalized Intersections 国際共著

Dias Charitha, Iryo-Asano Miho, Abdullah Muhammad, Oguchi Takashi, Alhajyaseen Wael

IEEE ACCESS 8 巻頁： 109821 - 109834 2020年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE Access

Information on the trajectories of turning vehicles at signalized intersections can be used in numerous applications, such as movement planning of autonomous vehicles, realistic representation of surrounding vehicle movements in driving simulator and virtual reality applications, and in microscopic simulation tools. However, no proper framework is currently available to realistically model and estimate trajectories of turning vehicles reflecting the intersection geometries, which is critical for the reliability of simulation models. This study explores the applicability of the minimum-jerk principle, which has been initially applied in neuroscience and robotics domains, to model and simulate free-flow trajectories of turning vehicles. The modeling method is validated by comparing model outputs with empirical trajectories collected at several signalized intersections in Nagoya, Japan. The capability of the model in realistically capturing the variations in turning trajectories based on intersection geometry (e.g., intersection angle and turning radius) is also explained. Further, the applicability of the modeling framework at intersections with different geometric features under different speeds and accelerations are also discussed.

DOI： 10.1109/ACCESS.2020.3002020

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Scopus

パーソナルモビリティの車種が歩行者のリスク認知に与える影響に関する研究査読有り

菱川貴之, 井料美帆, 長谷川悠

土木学会論文集D3 75 巻 ( 5 ) 頁： 595-605 2019年12月

Japan

Nakamura H

Global Practices on Road Traffic Signal Control: Fixed-Time Control at Isolated Intersections 頁： 163-184 - 184 2019年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Global Practices on Road Traffic Signal Control: Fixed-Time Control at Isolated Intersections

This chapter summarizes the basic concept and procedure of traffic signal control in Japan, including not only the current practical settings but also the ideas proposed in the forthcoming Japanese manual. In Section 10.1, a historical overview as well as the current statistics of traffic signal installations are provided. Section 10.2 explains the criteria for how to choose the intersection control type and the quantitative strategy for determining the installation of traffic signals is introduced. Basic ideas of adaptive signal control using time occupancy data are also shown. Regarding the signal phasing plan as in Section 10.4, movement-based control is rarely applied and simple two-phase plans or four-phase plans with permissive-protected right-turn phase (in left-hand traffic) are widely applied conventionally. The detailed calculation method of variables recommended in the Japanese manuals is given in Section 10.5. Although in-depth considerations are proposed in the manual, more simplified methods are applied in practice to obtain several variables, such as settings of intergreen time and minimum pedestrian crossing time. The calculation example in Section 10.7 provides practical approaches with these simple settings to demonstrate the actual conditions in Japan.

DOI： 10.1016/B978-0-12-815302-4.00010-8

Scopus

自動運転車両の混在が信号交差点交通容量に与える影響に関する分析査読有り

鰐部万磨, 柿元祐史, 中村英樹, 井料美帆

交通工学論文集 5 巻 ( 2 ) 頁： 167-175 2019年

Experimental Investigation of Pedestrian Queuing Behaviour

Zhang, JH; Iryo-Asano, M; Dias, C

TRAFFIC AND GRANULAR FLOW '17 頁： 177 - 185 2019年

Calibrating a Social Force based Model for Simulating Personal Mobility Vehicles and Pedestrian Mixed Traffic 査読有り国際共著

C. Dias, M. Iryo-Asano, H. Nishiuchi, T. Todoroki

Simulation Modelling Practice and Theory 87 巻頁： 395-411 2018年9月

Modeling pedestrians' subjective danger perception toward personal mobility vehicles 査読有り

Y. Hasegawa, C. Dias, M. Iryo-Asano, H. Nishiuchi

Transportation Research Part F: Traffic Psychology and Behaviour 56 巻頁： 256-267 2018年7月

パーソナルモビリティに対する歩行者の認知に着目したヴァーチャルリアリティの適応可能性の検討査読有り

長谷川悠, 井料美帆

交通工学論文集 4 巻 ( 1 ) 頁： A_147-A_153 2018年

A Study on the Average Travel Speed on Interrupted Flow Multi-Lane Highways 査読有り

Akandwanaho Edwin, Iryo Miho, Nakamura Hideki

INTERNATIONAL SYMPOSIUM OF TRANSPORT SIMULATION (ISTS'18) AND THE INTERNATIONAL WORKSHOP ON TRAFFIC DATA COLLECTION AND ITS STANDARDIZATION (IWTDCS'18) - EMERGING TRANSPORT TECHNOLOGIES FOR NEXT GENERATION MOBILITY 34 巻頁： 51-58 2018年

生活道路単路部の横断構成が運転者の走行意識に及ぼす影響に関する研究査読有り

井料美帆

土木学会論文集D3 74 巻 ( 5 ) 頁： 925-933 2018年

Applicability of Virtual Reality Systems for Evaluating Pedestrians' Perception and Behavior

Iryo-Asano Miho, Hasegawa Yu, Dias Charitha

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Transportation Research Procedia

In order to properly design pedestrian spaces, it is important to consider pedestrian safety and comfort. Recently, with the rapid progress of virtual reality (VR) technologies, reproducing objects closer to VR users has become easier. Therefore, VR systems are expected to be valuable tools for evaluating safety and comfort from the pedestrians' viewpoint. In particular, VR enables users to interact not only with ordinary vehicles but also with surrounding pedestrians or personal mobility vehicles, and thus a wider range of applications are expected. However, most attempts to validate VR performance have so far have been limited to cases of pedestrians encountering ordinary vehicles. In this research, pedestrians' cognition and behavioral characteristics toward other pedestrians and personal mobility vehicles were analyzed by comparing those measured in VR and in real spaces. It was shown that the perception of distance and subjective danger from personal mobility vehicles are not different in VR and real spaces when the vehicle approaches VR participants from the front and back, although the subjective danger tends to be less sensitive to the lateral space between VR participants and the personal mobility vehicle. It was also revealed that VR participants tend to keep a larger lateral clearance than in real spaces when avoiding other pedestrians.

DOI： 10.1016/j.trpro.2018.11.015

Web of Science

Scopus

A Study on the Impact of AV-HDV Mixed Traffic on Flow Dynamics of Single-Lane Motorway

Kakimoto Yuji, Iryo-Asano Miho, Orhan Emre, Nakamura Hideki

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Transportation Research Procedia

Due to the advancement in technology, it is likely to witness a deployment of Autonomous Vehicles (AV) on the road in the near future. High technical capability of AVs is expected to create different behavioral settings than Human-Driven Vehicles (HDV), such as shorter reaction time and time headway. However, considering AV-HDV mixed traffic conditions in the process of the dissemination, radical behavioral settings of AV might have negative impacts on traffic flow. This paper investigates safety, efficiency and comfort impacts of AV on a single lane motorway considering different reaction time, time headway and percentage of AV in a vehicle platoon. Results of Monte Carlo simulation show that with increased percentage of AV, safety, efficiency and comfort can be improved as far as the time headway of AV is similar to HDV under the assumption that AVs have smaller reaction time than HDVs. However, it can be concluded that the smaller desired minimum time headway may cause the unsafe and uncomfortable condition with the longer reaction time. Therefore, the setting of AV should be carefully selected considering the relationship between the reaction time and the desired minimum time headway.

DOI： 10.1016/j.trpro.2018.11.035

Web of Science

Scopus

平安京の交通流に関する一考察査読有り

桑原雅夫, 井料美帆

土木学会論文集D3 73 巻 ( 5 ) 頁： I_493-I_505 2017年12月

Human-like motion planning model for driving in signalized intersections 査読有り

Yanlei Gu, Yoriyoshi Hashimoto, Li-Ta Hsu, Miho Iryo-Asano, Shunsuke Kamijo

IATSS Research 41 巻 ( 3 ) 頁： 129 - 139 2017年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Elsevier B.V.

Highly automated and fully autonomous vehicles are much more likely to be accepted if they react in the same way as human drivers do, especially in a hybrid traffic situation, which allows autonomous vehicles and human-driven vehicles to share the same road. This paper proposes a human-like motion planning model to represent how human drivers assess environments and operate vehicles in signalized intersections. The developed model consists of a pedestrian intention detection model, gap detection model, and vehicle control model. These three submodels are individually responsible for situation assessment, decision making, and action, and also depend on each other in the process of motion planning. In addition, these submodels are constructed and learned on the basis of human drivers' data collected from real traffic environments. To verify the effectiveness of the proposed motion planning model, we compared the proposed model with actual human driver and pedestrian data. The experimental results showed that our proposed model and actual human driver behaviors are highly similar with respect to gap acceptance in intersections.

DOI： 10.1016/j.iatssr.2016.11.002

Scopus

Studying critical pedestrian behavioral changes for the safety assessment at signalized crosswalks 査読有り

Wael K. M. Alhajyaseen, Miho Iryo-Asano

SAFETY SCIENCE 91 巻頁： 351 - 360 2017年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

Pedestrian-vehicle conflicts are one of the most important safety concerns at signalized intersections especially in urban areas. Conflicting vehicles and pedestrians select their maneuvers by predicting the other user behavior. Sudden behavioral changes of pedestrians such as sudden speed change (acceleration or deceleration) cannot be predicted by drivers, which can lead to safety hazards especially if these sudden behavioral changes occur near conflict areas. In this study, continuous pedestrian speed profiles were analyzed at signalized crosswalks to investigate the existence of such behavioral changes. A methodology is proposed to identify significant sudden changes of pedestrian speeds. The locations and timings of these sudden speed change events were analyzed, and the influencing factors such as crosswalk geometry and signal timing were studies and evaluated. Five signalized crosswalks at three intersections in Nagoya City were videotaped for analysis. Individual pedestrian maneuvers were extracted with image processing software. Empirical analysis showed that sudden acceleration events were observed at the entrance points to the pedestrian-vehicle conflict area, which highlights the significance of these events to pedestrian-vehicle conflict analysis. A multinomial logit model was developed to estimate the probability of a pedestrian making a sudden speed change as a function of different influencing factors. The results implied that the entering speed, necessary speed to finish crossing before the onset of the pedestrian signal red phase, and crosswalk length have a significant impact on speed change choices. This paper presents important suggestions to understanding pedestrian maneuvers in detail from the viewpoint of safety. (C) 2016 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.ssci.2016.09.002

Web of Science

Modeling pedestrian crossing speed profiles considering speed change behavior for the safety assessment of signalized intersections 査読有り

Iryo-Asano, M. and Alhajyaseen, W.K.M.

Accident Analysis & Prevention 108 巻頁： 332-342 2017年

交通流の変分原理に基づく系統信号路線の期待遅れ評価法査読有り

和田健太郎, 臼井健人, 大口敬, 井料(浅野)美帆

土木学会論文集D3 73 巻 ( 1 ) 頁： 85-96 2017年

道路空間デザインが歩車間コミュニケーションに及ぼす影響に関する研究査読有り

中山昂彦, 宮川愛由, 谷口綾子, 井料美帆, 小嶋文, 藤井聡

交通工学論文集 3 巻 ( 4 ) 頁： A_84-A_91 2017年

Evaluation of Safe Avoidance Distance for Pedestrians in Personal Mobility Vehicles and Pedestrian Mixed Traffic: A Simulation Based Study 査読有り

C. Dias, M. Iryo-Asano, H. Nishiuchi

Journal of the Eastern Asia Society for Transportation Studies 12 巻頁： 1994-2005 2017年

A probabilistic model of pedestrian crossing behavior at signalized intersections for connected vehicles 査読有り

Hashimoto Yoriyoshi, Gu Yanlei, Hsu Li-Ta, Iryo-Asano Miho, Kamijo Shunsuke

TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES 71 巻頁： 164-181 2016年10月

Experimental Analysis of Personal Mobility Maneuver Reacting to Pedestrians and Cyclists (特集持続可能な都市システムの構築を目指して)

井料美帆, DIAS Charitha, 加藤弘則, 霜野慧亮, 中野公彦

生産研究 68 巻 ( 4 ) 頁： 281-284 2016年7月

高速道路単路部ボトルネックにおける追従挙動特性の車両個体差の実証分析

楊燕, 和田健太郎, 大口敬, 井料（浅野）美帆, 牧野浩志

生産研究 68 巻 ( 2 ) 頁： 139-143 2016年

記述言語：英語掲載種別：研究論文（学術雑誌）

高速道路サグ部など単路部ボトルネックにおける交通渋滞発生時交通量は必ずしも一定ではなく，確率的に変動する事象として把握されている．この変動は個々の車両の運転挙動に違いがあることが主要因だと考えられている．東名高速道路下り大和バス停付近サグ部を対象に，複数ビデオカメラを画像処理することによって多数の運転挙動データを収集し，追従挙動モデルとそのパラメータ同定手法を精査して各走行データに適用した．得られた特性より，車両個体差の特徴を分析した．

確率的な需要の到着を考慮した信号路線の遅れ時間評価法

臼井健人, 和田健太郎, 大口敬, 井料（浅野）美帆

生産研究 68 巻 ( 2 ) 頁： 151-156 2016年

記述言語：日本語掲載種別：研究論文（学術雑誌）

本研究は，確率的な需要の到着を考慮して，信号路線の総遅れ時間の期待値を計算する手法を示す．提案手法は交通流の変分理論（VT）に基づくものであるが，確率的な需要を考慮した場合，交通流ダイナミクスは確率的な最短経路探索問題の解として記述され，その厳密な求解は困難なものとなる．そこで，以下の二つを組み合わせた近似解法を提案する：（1）最短経路が持つ特性による解集合（経路の候補数）の縮小；（2） Clark approximation の援用．モンテカルロ計算による期待値との比較実験の結果，提案解法は実験で用いたいずれの道路設定においても精度よく期待値を計算できることがわかった．

タンデムソーティング戦略による信号交差点の容量増強のケーススタディ

ガスパイサンディメイ, 大口敬, 和田健太郎, 井料（浅野）美帆

生産研究 68 巻 ( 2 ) 頁： 145-150 2016年

記述言語：英語掲載種別：研究論文（学術雑誌）

交差点におけるタンデムソーティング戦略 (TSS) は，右折・左折専用現示のある交差点における容量増強のアプローチである．この戦略では，ある現示の車両のみ交差点に到達できるよう上流部の信号で制御を行うため，それらの車両をより多くの車線を利用して効率的に捌くことができる．ただし，現示間の需要の偏りが大きい場合など，上流信号におけるスプリットがある一定値を越えると，交差点の捌け量が低下する．本研究では，こうした状況におけるケーススタディを行う．その結果，(1) 捌け量の低下が生じている場合でもなおTSS がない場合に比べてTSS 導入時の容量が高い，(2) TSS 導入時のサイクル長を短くすることにより，容量の増加と信号遅れの削減が同時に達成できることがわかった．

歩行者・自転車に反応するパーソナルモビリティ挙動の実験的分析

井料美帆, ディアスチャリタ, 加藤弘則, 霜野慧亮, 中野公彦

生産研究 68 巻 ( 4 ) 頁： 281-284 2016年

記述言語：英語掲載種別：研究論文（学術雑誌）

<p>パーソナルモビリティは，特に短距離トリップに有効な新たな交通手段として注目されている．歩行者・自転車等の低速交通需要の多いアジア諸国においてパーソナルモビリティが実道展開するためには，他の交通手段との相互作用を適切に理解する必要がある．相互作用を表現するパーソナルモビリティの挙動モデルは，歩行者・車両挙動との類似点・相違点を理解したうえで，既存の歩行者・車両モデル等を改良することで構築可能と考えられる．本速報では，挙動モデルで用いられる説明変数の特性について，被験者実験による分析結果を報告する．</p>

ドライバーの協調行動促進に歩行者コミュニケーションが及ぼす影響査読有り

谷口綾子, 田辺太一, 井料美帆, 宮川愛由, 小嶋文

土木学会論文集D3（土木計画学） 72 巻 ( 5 ) 頁： I_1241-I_1247 2016年

記述言語：日本語掲載種別：研究論文（学術雑誌）

本研究では，無信号交差点における歩行者と自動車の関係性について，歩行者側の積極的なコミュニケーションが，ドライバーが歩行者に道を譲る行動(協調行動)にどのような影響を与えるかに着目した仮説を措定し，実証実験で検証した．実験結果より，歩行者からの自動車への積極的なコミュニケーションは協調行動促進に有効であること，「挙手」はアイコンタクトや会釈に比べ，ドライバーが歩行者に道を譲る協調行動を誘発することが示された．また，コミュニケーション効果が期待できる自動車速度には上限があること，ドライバーが歩行者によるコミュニケーションを見て迂回する行動が観測されたが，迂回幅は30cm強であったことが示された．これらの結果は，歩行者からの積極的なコミュニケーションが，ドライバーの協調行動を誘発し交通事故低減につながる可能性を示唆していると考えられる．

道路空間デザインが歩車間コミュニケーションに及ぼす影響に関する研究査読有り

中山昂彦, 宮川愛由, 谷口綾子, 井料美帆, 小嶋文, 藤井聡

交通工学研究発表会論文集 36 巻頁： 163-169 2016年

Analysis and Modeling of Pedestrian Crossing Behavior During the Pedestrian Flashing Green Interval 査読有り

Iryo-Asano Miho, Alhajyaseen Wael K. M., Nakamura Hideki

IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS 16 巻 ( 2 ) 頁： 958-969 2015年4月

キスアンドライド車両の乗降位置選択行動を考慮した駅前広場交通シミュレーション査読有り

井料(浅野) 美帆

土木学会論文集D3（土木計画学） 71 巻 ( 5 ) 頁： I_931-I_941 2015年

記述言語：日本語掲載種別：研究論文（学術雑誌）

駅前広場の車両通行部分では，様々な利用者が錯綜することによる混雑が発生し，その影響は時に街路へと及ぶ．中でもキスアンドライド車両は乗降位置を自由に選択できるものの，その行動特性や，選択結果が渋滞発生へ与える影響は分かっていない．本論文は，キスアンドライド車両の送り・迎えの種別ごとの乗降位置選択行動と駅前広場の待ち行列発生パターンとの関連性を明らかにし，それを定量的に表現可能なシミュレーションモデルを構築することを目的とする．まず実態調査から，時間帯により乗降時間分布が異なること，乗降時間の比較的短い利用者の二重停車により待ち行列が延伸することを確認した．そして，二重停車を含む乗降位置選択モデルを組み込んだシミュレーションにより，駅前広場における複数の渋滞パターンを再現できることを示した．

歩行者交差交通流の性能評価に関する研究

井料美帆, 長島愛

生産研究 67 巻 ( 4 ) 頁： 369-373 2015年

記述言語：日本語掲載種別：研究論文（学術雑誌）

本論文では，歩行者交差交通流のサービスの質を渋滞・非渋滞双方について定量的に示すための指標を提案し，指標と交通流特性との関係を明らかにすることを目的とする．歩行者交通流の集計的な特性曲線には必ずしも現れない歩行者の移動負荷を，微小時間ごとの歩行安定性指標により表現し，交差交通流のサービスの質が交差角度により大きく変動することを実観測データから示した．また，この変動傾向を再現する歩行者ミクロ挙動モデルを提案し，任意の需要や交差角度の交通流に対するサービスの質の評価を可能とした．

プローブデータを活用した交差点の方向別交通量・旅行時間推定

ガスパイサンディメイ, 大口敬, 井料（浅野）美帆, 和田健太郎

生産研究 67 巻 ( 2 ) 頁： 125-130 2015年

記述言語：英語掲載種別：研究論文（学術雑誌）

多くの交差点における車両感知器の課題は，左折・直進・右折の方向別の需要を直接把握することができない点である．これは，特に，右折専用現示を持つ信号の性能に影響するものであり，右折車両は相対的に短いスプリットにより，大きな遅れ時間を被る状況がしばしば発生する．本研究は，感知器データと光ビーコンによるプローブデータを組み合せることにより，右折需要とその旅行時間を推定する手法を開発する．推定手法を実際の交通データにより検証し，その推定結果に基づくスプリット調整による交差点の円滑性改善可能性について示す．

A study on variations of car-following behavior at sag sections and the impact of introducing ACC system 査読有り

Yang Yan, Wada Kentaro, Oguchi Takashi, Iryo-Asano Miho

2015 IEEE 18TH INTERNATIONAL CONFERENCE ON INTELLIGENT TRANSPORTATION SYSTEMS 頁： 256-261 2015年

高速道路サグ部における追従挙動モデルのパラメータ分布に関する研究

楊燕, 大口敬, 井料（浅野）美帆, 和田健太郎

生産研究 67 巻 ( 2 ) 頁： 119-124 2015年

記述言語：英語掲載種別：研究論文（学術雑誌）

日本における高速道路サグ部における交通渋滞は，同じサグ部ボトルネックであっても様々な交通需要条件で発生する．サグ部の交通渋滞発生の不確実性は，様々な各車両の追従挙動特性に違いがあるためだと考えられる．本論文では，サグ部における交通渋滞発生に影響を与える各車両の追従挙動特性の定量的影響分析研究の取組みの現状を報告する．まず，勾配影響を加味した追従挙動モデルを提案した．計測された車両軌跡データを使い，各車両の追従挙動パラメータを推定した．車両間のパラメータ分布の相関評価と分類を行った．

Application of social force model to pedestrian behavior analysis at signalized crosswalk 査読有り

Zeng Weiliang, Chen Peng, Nakamura Hideki, Iryo-Asano Miho

TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES 40 巻頁： 143-159 2014年3月

横断歩道長と歩行者信号現示を考慮した横断歩行速度のモデル化査読有り

張馨, 中村英樹, 井料(浅野) 美帆

土木学会論文集. D3, 土木計画学 70 巻 ( 5 ) 頁： I_1031-1040 2014年

Analysis of Pedestrian Clearance Time at Signalized Crosswalks in Japan 査読有り

Iryo-Asano Miho, Alhajyaseen Wael K. M.

5TH INTERNATIONAL CONFERENCE ON AMBIENT SYSTEMS, NETWORKS AND TECHNOLOGIES (ANT-2014), THE 4TH INTERNATIONAL CONFERENCE ON SUSTAINABLE ENERGY INFORMATION TECHNOLOGY (SEIT-2014) 32 巻頁： 301-308 2014年

信号交差点改良対策立案のための右直分離制御時の車両挙動分析査読有り

渡部数樹, 中村英樹, 井料(浅野) 美帆

土木学会論文集D3（土木計画学） 70 巻 ( 5 ) 頁： I_1013-I_1022 2014年

記述言語：日本語掲載種別：研究論文（学術雑誌）

信号交差点における右折関連事故は依然として高い割合にあり，右折車両の挙動を分析することは交差点の安全性を検討する上で極めて重要である．本論文では，他の道路利用者の影響を比較的受けない，直進・左折と分離された右折専用現示における右折車両挙動に着目し，道路構造や交通運用が各挙動に与える影響を分析する．分析結果より，専用現示における右折車両挙動には交差角度や停止線セットバック量といった道路構造が強く影響していることを示す．さらに，交通安全上の課題に対する対策立案や対策が挙動に及ぼす正負の効果を把握するため，一連の各挙動とその影響要因を整理することの必要性を述べる．最後に，交差点の安全性評価において，ミクロシミュレータ活用によるメリットや代替性安全性指標を包括的に評価することの必要性について考察する．

横断歩道長と歩行者信号現示を考慮した横断歩行速度のモデル化査読有り

張馨, 中村英樹, 井料(浅野) 美帆, 陳鵬

土木学会論文集D3（土木計画学） 70 巻 ( 5 ) 頁： I_1031-I_1040 2014年

記述言語：日本語掲載種別：研究論文（学術雑誌）

信号交差点における横断歩行者の歩行速度特性を知ることは，歩行者の安全性の向上に極めて重要である．そのため，横断歩道の幾何構造および信号現示などによる横断歩行速度の変化を定量的に評価する必要がある．そこで本研究では，様々な横断歩道長や歩行者青時間長の横断歩道における歩行者青(PG)時の横断歩行速度を，横断の前半・後半に分けて分析し，これらを推定するモデルを構築した．その結果，横断歩道長が長くなるほど，また青時間開始から時間が経つほど，横断歩行速度が速くなることがわかった．さらに，これを既存の歩行者青点滅(PF)時間を対象としたモデルと比較し各説明変数の感度分析を行ったところ，青点滅時の方が全体的に横断歩行速度が速く，横断歩道長や横断開始タイミングに対する感度も高い傾向が見られた．

信号交差点改良対策立案のための右直分離制御時の車両挙動分析査読有り

渡部数樹, 中村英樹, 井料(浅野) 美帆

土木学会論文集. D3, 土木計画学 70 巻 ( 5 ) 頁： I_1013-1022 2014年

Stochastic approach for modeling the effects of intersection geometry on turning vehicle paths 査読有り

W.K.M. Alhajyaseen, M. Asano, H. Nakamura, M.T. Dang

Transportation Research Part C: Emerging Technologies 32 巻頁： 179-192 2013年6月

信号交差点における横断歩行者のクリアランス挙動に関する研究査読有り

浅野美帆, 張馨, Alhajyaseen W.K.M., 中村英樹

第32回交通工学研究発表会論文集 32 巻頁： 6 pages 2012年9月

交差形式に応じた階層型道路ネットワーク性能に関するケーススタディ

浅野美帆, 後藤梓, 内海泰輔, 中村英樹, 水野裕彰

土木計画学研究・講演集 45 巻頁： 8 pages 2012年6月

Left-turn Gap Acceptance Models considering Pedestrian Movement Characteristics 査読有り

W.K.M. Alhajyaseen, M. Asano, H. Nakamura

Accident Analysis & Prevention 2012年5月

An Integrated Model for the Maneuver of Left Turners Considering Dynamic Reaction to Crossing Pedestrians 査読有り

Alhajyaseen, W., Asano, M. and Nakamura, H.

Proceedings of 91th Transportation Research Board Annual Meeting 頁： 18 pages 2012年1月

A Microscopic Traffic Simulation Models for Safety Assessment at Signalized Intersections 査読有り

Tan, D., Alhajyaseen, W., Asano, M. and Nakamura, H.

Proceedings of 91th Transportation Research Board Annual Meeting 頁： 16 pages 2012年1月

Estimation of Left-turning Vehicle Maneuvers for the Assessment of Pedestrian Safety at Intersections 査読有り

W. K. M. Alhajyaseen, M. Asano, H. Nakamura

IATSS Research 36 巻 ( 1 ) 頁： 66-74 2012年

駅前広場におけるキスアンドライド車両の停車特性に関する研究査読有り

柿元祐史, 浅野美帆, 中村英樹

土木学会論文集D3 67 巻 ( 5 ) 頁： 1079-1087 2011年12月

都市間高速道路におけるボトルネック交通容量の確率的特性分析査読有り

小林正人, 中村英樹, 浅野美帆, 米川英雄

第31回交通工学研究発表会論文集頁： 133-138 2011年9月

A Methodology for Modeling the Distribution of Turning Vehicle Paths at Signalized Intersections 査読有り

Alhajyaseen, W.K.M., Asano, M., Nakamura, H. and Tan, D.M.

Proceedings of 3rd International Conference on Road Safety and Simulation 頁： 20 pages, CD-ROM 2011年9月

Gap Acceptance Models for Left-turning Vehicles Facing Pedestrians at Signalized Crosswalks 査読有り

頁： 17 pages 2011年9月

A Study on Expressway Breakdown Phenomenon Considering Flow Characteristics on Individual Lanes 査読有り

Ma, D., Nakamura, H., Asano, M. and Wolfermann, A.

Proceedings of the 9th International Conference of the Eastern Asia for Transportation Studies (EASTS) 頁： 15 pages, CD-ROM 2011年6月

Start-up Behavior Considering Interactions between the Clearing and Entering Vehicles during the Signal Change and Clearance Intervals

Suzuki, K., Goto, A., Nakamura, H., Tang, K. and Asano, M.

Proceedings of the 9th International Conference of the Eastern Asia for Transportation Studies (EASTS) 頁： 15 pages, CD-ROM 2011年6月

Urban Expressway Capacity Characteristics of Lane Closure Sections due to Accidents 査読有り

Ma, D., Nakamura, H. and Asano, M.

Proceedings of the 9th International Conference of the Eastern Asia for Transportation Studies (EASTS) 頁： 14 pages, CD-ROM 2011年6月

Analysis on Pedestrian Speeds at Intersections Considering Signal Timing and Crosswalk Length 査読有り

Alhajyaseen, W., Zhang, X., Nakamura, H. and Asano, M.

Proceedings of the 9th International Conference of the Eastern Asia for Transportation Studies (EASTS) 頁： 12 pages, CD-ROM 2011年6月

Analysis on the Variation of Left-turning Vehicle Spatial Trajectories Inside Intersections 査読有り

Alhajyaseen, W., Asano, M., Suzuki, K. and Nakamura, H.

Proceedings of the 9th International Conference of the Eastern Asia for Transportation Studies (EASTS) 頁： 15 pages 2011年6月

Impacts of Channelization Islands on the Left-turning Vehicle Maneuvers at Signalized Intersections in Japan 査読有り

Tan, D., Asano, M. and Nakamura, H.

Proceedings of the 9th International Conference of the Eastern Asia for Transportation Studies (EASTS) 頁： 15 pages, CD-ROM 2011年6月

Saturation Flow Rate Analysis for Shared Left-turn Lane at Signalized Intersections in Japan 査読有り

Chen, P., Nakamura, H. and Asano, M.

Proceedings of the 6th International Symposium on Highway Capacity and Quality of Service, Transportation Research Board, Procedia, Social and Behavioral Sciences 頁： 548-559 2011年6月

Effects of Bi-directional Pedestrian Flow Characteristics upon the Capacity of Signalized Crosswalks 査読有り

Alhajyaseen, W., Nakamura, H. and Asano, M.

Proceedings of the 6th International Symposium on Highway Capacity and Quality of Service, Transportation Research Board, Procedia, Social and Behavioral Sciences 頁： 526-535 2011年6月

Unsteady Queue Discharge Characteristics of Shared Left-turn Lane at Signalized Intersections in Japan 査読有り

Chen, P., Nakamura, H. and Asano, M.

Proceedings of the 9th International Conference of the Eastern Asia for Transportation Studies (EASTS) 頁： 14 pages, CD-ROM 2011年6月

飯田市ラウンドアバウト実道実験における車両挙動の前後比較分析

中野祥平, 中村英樹, 浅野美帆

土木計画学研究・講演集 43 巻頁： CD-ROM, 6pages 2011年5月

Developing a Simulation Tool for traffic Safety Assessment at Signalized Intersections

Tan, D., Alhajyaseen, W.K.M., Asano, M. and Nakamura, H.

Proceedings of Infrastructure Planning 43 巻頁： CD-ROM, 6pages 2011年5月

Modeling the Maneuver of Left-turning Vehicles Considering the Interaction with Pedestrians at Signalized Intersections

Kang, N., Alhajyaseen, W.K.M., Wolfermann, A., Asano, M. and Nakamura, H.

Proceedings of Infrastructure Planning, 43 巻頁： CD-ROM, 9pages 2011年5月

階層型道路ネットワーク実現のための道路投資手法

早河辰郎, 浅野美帆, 中村英樹

土木計画学研究・講演集 43 巻頁： CD-ROM, 8pages 2011年5月

Lane Utilization Analysis within Lane Group under the Influence of Shared Left-turn Traffic

Chen, P., Nakamura, H. and Asano, M.

Proceedings of Infrastructure Planning 43 巻頁： CD-ROM, 8pages 2011年5月

The Impacts of Signal Timing and Crosswalk Length upon Pedestrian Speeds at Signalized Crosswalks

Zhang, X., Alhajyaseen, W.K.M., Asano, M. and Nakamura, H.

Proceedings of Infrastructure Planning, 43 巻頁： CD-ROM, 5pages 2011年5月

Analysis of Saturation Flow Rate Fluctuation for Shared Left-turn Lane at Signalized Intersections in Japan: Case Study 査読有り

Chen, P., Nakamura, H. and Asano, M

Proceedings of 90th Transporataion Research Board Annual Meeting 頁： DVD-ROM, 17 pages 2011年1月

Modeling Variation in the Trajectory of Left-Turning Vehicles Considering Intersection Geometry 査読有り

Asano, M., Alhajyaseen, W. K. M., Suzuki, K. and Nakamura, H.

Proceedings of 90th Transportation Research Board Annual Meeting 頁： DVD-ROM, 17 pages 2011年1月

Microscopic Pedestrian Simulation Model Combined with a Tactical Model for Route Choice Behaviour 査読有り

Asano M., Iryo T. and Kuwahara, M.

Transportation Research Part C 18 巻頁： 842-855 2010年12月

都市高速道路合流部における加速車線利用実態に関する研究

大澤昂, 浅野美帆, 中村英樹

土木計画学研究・講演集 42 巻頁： CD-ROM, 4pages 2010年11月

Analysis of Saturation Flow Rate Fluctuation for Shared Left-turn Lane at Signalized Intersections

Chen, P., Nakamura, H. and Asano, M

Proceedings of Infrastructure Planning 42 巻頁： CD-ROM, 6pages 2010年11月

全赤時間長に着目したインターグリーン時間における直進車の停止/通過挙動の分析

後藤梓, 鈴木一史, 中村英樹, 浅野美帆

土木計画学研究・講演集 42 巻頁： CD-ROM, 5pages 2010年11月

駅前広場の施設配置に応じた利用者行動実態に関する研究

柿元祐史, 浅野美帆, 中村英樹

土木計画学研究・講演集 42 巻頁： CD-ROM, 4pages 2010年11月

高速道路の付加車線区間における交通実態に関する研究査読有り

白木文康，中村英樹，浅野美帆

第30回交通工学研究発表会論文集頁： 4pages, CD-ROM 2010年9月

Self-organization of pedestrian flow with a game theory based microscopic simulation 査読有り

Asano, M., Iryo, T. and Kuwahara, M.

12th World Conference on Transport Research 頁： 17 pages, USB memory 2010年7月

Evaluation of Group-Based Signal Control Through Field Operational Tests

Kang, N., Alhajyaseen, W., Nakamura, H., Asano, M. and Tang, K.

頁： 4pages, CD-ROM 2010年6月

最終右折車との交錯に着目した信号切り替わり時の車両挙動分析

後藤梓, 鈴木一史, 中村英樹, 浅野美帆

土木学会中部支部研究発表会講演概要集頁： 2pages, CD-ROM 2010年3月

付加車線設置形態による利用実態と登坂車線の効果に関する研究

白木文康, 中村英樹, 浅野美帆

土木学会中部支部研究発表会講演概要集頁： 2pages, CD-ROM 2010年3月

交差点幾何構造の影響を考慮した左折車両挙動のモデル化

勇川邦浩, 鈴木一史, 中村英樹, 浅野美帆

土木学会中部支部研究発表会講演概要集頁： 2pages, CD-ROM 2010年3月

ラウンドアバウト流出入部における車両挙動分析

吉岡慶祐, 中村英樹, 浅野美帆

土木学会中部支部研究発表会講演概要集頁： 2pages, CD-ROM 2010年3月

Markings at Signalized Intersections in Japan and Germany

von Moerner, M., Nakamura, H. and Asano, M.

頁： 2pages, CD-ROM 2010年3月

ドライビングシミュレータを用いたサグ部円滑化走行支援サービス効果の検証査読有り

畠中秀人，坂井康一，浅野美帆，佐藤章博

第29回交通工学研究発表会論文集頁： 4pages, CD-ROM 2009年11月

二段階情報提供による安全合流支援システムの有効性検証

浅野美帆, 畠中秀人, 鹿野島秀行, 山下大輔, 長野和夫

第40回土木計画学研究発表会・講演集頁： 4pages, CD-ROM 2009年11月

Evaluation of Advanced Cruise-Assist Highway Systems for Safety based on Verification Tests

Hatakenaka, H., Sakai, K., Kanoshima, H., Asano, M., Hosaka, A. and Mizutani, H.

Proceedings of 16th World Congress on Intelligent Transport Systems 頁： 8 pages, CD-ROM 2009年9月

Proving Test in Regional Development of Forward Obstacle Information Provision Service

Hatakenaka, H., Kanoshima, H., Sakai, K., Asano, M., Ogasawara, M. and Mizutani, H.

Proceedings of 16th World Congress on Intelligent Transport Systems 頁： 8 pages, CD-ROM 2009年9月

*A Pedestrian Model considering Anticipatory Behaviour forCapacity Evaluation 査読有り

Asano, M., Iryo, T. and Kuwahara, M.

Springer 頁： 559-581 2009年7月

スマートウェイにおける安全・円滑化実現のための情報提供手法の検討

浅野美帆, 畠中秀人, 鹿野島秀行, 坂井康一, 水谷博之

土木計画学研究・講演集 39 巻頁： 4pages, CD-ROM 2009年6月

前方状況情報提供サービスにおける静止画像表示の活用可能性検証

畠中秀人, 坂井康一, 浅野美帆, 小笠原誠, 半田悟

土木計画学研究・講演集 39 巻頁： 4pages, CD-ROM 2009年6月

首都高速道路の合流部における動的可変な車線運用の適用可能性査読有り

畠中秀人，坂井康一，浅野美帆，西井禎克

第28回交通工学研究発表会論文報告集頁： 41-44 2008年11月

The Development of AHS for the Service to Optimize Lane Utilization Rates at Sag Sections on Expressway

Sakai, K., Hatakenaka, H., Asano, M., Nishii, S. and Kinoshita, Y.

Proceedings of 15th World Congress on Intelligent Transport Systems 頁： 9 pages, CD-ROM 2008年11月

Proving Test of the Forward Obstacles Information Provision Service using the ETC-ID System

Hatakenaka, H., Sakai, K., Asano, M., Ogasawara, M., Ogane, K., Taguchi, H. and Mizutani, H.

Proceedings of 15th World Congress on Intelligent Transport Systems 頁： 8 pages, CD-ROM 2008年11月

Applying Microscopic Traffic Simulator to Evaluate Effects of Dynamic Parking Lot Guidance

Hirasawa, T., Asano, M., Sakai, K. and Shimokawa, S.

Proceedings of 15th World Congress on Intelligent Transport Systems 頁： 11 pages, CD-ROM 2008年11月

Microscopic Pedestrian Simulation Model for Flow Evaluation Incorporating Anticipatory Behaviour 査読有り

Asano, M., Iryo, T. and Kuwahara, M.

Proceedings of 3td International Symposium on Transport Simulation 頁： 13 pages, CD-ROM 2008年8月

*交錯交通の容量評価のためのミクロ歩行者行動モデル査読有り

浅野美帆，井料隆雅，桑原雅夫

交通工学 43 巻 ( 4 ) 頁： 80-89 2008年7月

サグ部円滑化走行支援サービスにおける態度・行動変容アプローチに関する一考察

畠中秀人, 坂井康一, 浅野美帆, 西井禎克

土木計画学研究・講演集 38 巻頁： 4pages, CD-ROM 2008年

*Pedestrian simulation considering stochastic route choice and multidirectional flow 査読有り

Asano, M., Kuwahara, M. and Sumalee, A.

Transport simulation: Beyond traditional approaches, EPFL press 頁： 107-123 2008年

歩行者青信号の残り時間表示の導入に伴う横断挙動分析査読有り

村田啓介，浅野美帆，田中伸治，桑原雅夫

IATSS Review 31 巻 ( 4 ) 頁： 348-355 2007年

先読み行動を考慮した歩行者交通流シミュレーション

浅野美帆，桑原雅夫

生産研究 59 巻 ( 3 ) 頁： 184-187 2007年

AHSを活用した交通円滑化走行支援サービスの実用化に向けた取組み

平井節生, 畠中秀人, 浅野美帆, 西井禎克, 前田雅人, 片山恭紀

第6回ITSシンポジウム論文集頁： 6 pages, CD-ROM 2007年

Multi-directional pedestrian flow model based on empirical data 査読有り

Asano, M., Kuwahara, M. and Tanaka, S.

Proceedings of The 11th World Conference on Transportation Research 頁： 34 pages, CD-ROM 2007年

Dynamic Cell-Transmission based Pedestrian Model with Multi- Directional Flows and Strategic Route Choices 査読有り

Asano, M., Sumalee, A., Kuwahara, M. and Tanaka, S.

Transportation Research Record 2039 巻頁： 42-49 2007年

混雑時における歩行者ミクロ流動モデル

浅野美帆，桑原雅夫，田中伸治

第5回ITSシンポジウム論文集頁： 6 pages, CD-ROM 2006年12月

Pedestrian simulation considering stochastic route choice and multidirectional flow 査読有り

Asano, M., Kuwahara, M., Sumalee, A., Tanaka, S. and Chung, E

Proceedings of International Symposium on Transport Simulation 2006 頁： 12 pages, CD-ROM 2006年

階層的な経路選択行動を考慮した動的な歩行者交通流モデル

浅野美帆，桑原雅夫，田中伸治，Sumalee, A., Chung, E.

土木計画学研究・講演集 32 巻頁： 4pages, CD-ROM 2005年

プローブタクシーのリンク通過頻度推計モデル

村田啓介，堀口良太，桑原雅夫，浅野美帆，田中伸治

土木計画学研究・講演集 32 巻頁： 4pages, CD-ROM 2005年

遅れ時間のリアルタイム計測による交通感応信号制御

浅野美帆，堀口良太，桑原雅夫

生産研究 56 巻 ( 2 ) 頁： 22-25 2004年

交通シミュレーションを利用した信号制御アルゴリズム評価のための仮想社会実験

浅野美帆，堀口良太，桑原雅夫

交通工学 39 巻 ( 2 ) 頁： 39-45 2004年

Adaptive traffic signal control using real-time delay measurement –considering stochastic delay-

Asano, M., Horiguchi, R. and Kuwahara, M.

Proceedings of 11th World Congress on Intelligent Transport Systems 頁： 8 pages, CD-ROM 2004年

*需要の確率変動を考慮した遅れ時間評価型リアルタイム交通信号制御査読有り

浅野美帆，堀口良太，桑原雅夫

第24回交通工学研究発表会論文報告集頁： 101-104 2004年

一時停止を伴う合流部における走行支援情報提供の考察とその実験方法査読有り

清水哲夫，森地茂，浅野美帆

土木計画学研究・論文集 20 巻頁： 865-870 2003年

An Analysis of the Effect of Information Service on Gap Choice at Merging Section 査読有り

Shimizu, T., Morichi, S. and Asano, M.

Proceedings of 10th World Congress on Intelligent Transport Systems 頁： 10 pages, CD-ROM 2003年

A Traffic Signal Control Based on a Queuing Model Using ITS Sensing Technologies

Asano, M., Nakajima, A., Horiguchi, R., Oneyama, H. and Kuwahara, M.

Proceedings of 10th World Congress on Intelligent Transport Systems 頁： 12 pages, CD-ROM 2003年

遅れ時間自己評価によるリアルタイム交通信号制御査読有り

浅野美帆，中島章，堀口良太，小根山裕之，桑原雅夫，越正毅，赤羽弘和

土木計画学研究・論文集 20 巻頁： 879-886 2003年

リアルタイムモデル規範信号制御のための遅れ時間算出方法

浅野美帆, 中島章, 堀口良太, 小根山裕之, 桑原雅夫

土木計画学研究・講演集 26 巻頁： 4pages, CD-ROM 2002年

一時停止を伴う合流部における走行支援情報提供実験

清水哲夫, 浅野美帆, 森地茂

土木計画学研究・講演集 26 巻頁： 4pages, CD-ROM 2002年

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