受賞国：アメリカ合衆国

毎年1名受賞。2007年度は177人の候補者の中から選出。

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：公益社団法人 自動車技術会  

高齢ドライバの特徴を把握するためのSQ-CCDCは，運転に関する多角的な変数を持つ簡易質問紙である．回答後すぐフィードバックできることが望ましいが，解析ソフトを用いてランクを推定することは現実的でない．従って本報告では，各尺度の和得点からランクをその場で類推できるよう，カットオフポイントを検討した．

DOI： 10.11351/jsaeronbun.54.650

CiNii Research

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Traffic Injury Prevention  

Objective: A driver’s internal state is a critical factor influencing driving performance, especially in cases of surprise or shock in response to unexpected incidents while driving. This study was designed to investigate the brain activity of a senior driver in response to simulated unexpected vehicle motion, compared with a relaxed state and normal driving. Methods: To accomplish this, we created a driving simulator paradigm wherein participants were involved in one of the following three scenarios: sitting down and relaxing, normal driving around the city with traffic signals and other vehicles, and the exiting of a parking area. In the scenario where the driver was to exit the parking area, the gear was switched automatically by the CarMaker software without the driver being notified, leading to an unexpected condition. The driver’s internal states were classified by artificial intelligence, based on information obtained through four-channel near-infrared spectroscopy. Results: Significant differences were observed between the hemodynamic responses obtained in the three conditions. Ultimately, this method can be used to update advanced driver assistance systems, with a view to preventing future traffic accidents, by activating in-vehicle safety functions based on the driver’s condition. Conclusions: A driver’s internal states in a panic situation while driving can be detected using near-infrared spectroscopy and artificial intelligence.

DOI： 10.1080/15389588.2022.2051019

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Scopus

PubMed

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：人間・環境学会  

<p>昨今，高齢ドライバによる交通事故が世間の注目を浴び，免許返納が促進されている。その一方で運転をやめることによる生き甲斐の減少や要介護リスクの増加などの問題も指摘されている。高齢者のモビリティを支えるため，有効な運転補助手段や環境整備など運転支援に対する知見を得ることが急務である。国立研究開発法人科学技術振興機構（JST）の研究成果展開事業「センター・オブ・イノベーション（COI）プログラム」によって蓄積されたデータのうち，本報告では，高齢ドライバが運転したくないと感じる走行環境の質問項目に着目した。24種類の走行環境に対する「見かける程度」と「運転したくない程度」の評価を用いて，潜在ランク理論による分析を行った結果，回答者（55歳～87歳）を5群に分類した。高齢者群の走行環境に対する評価の仕方の差異が見られ，走行環境に対する認識が高齢者群によって異なる様相が明らかとなった。</p>

DOI： 10.20786/mera.24.2_24

CiNii Research

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE Conference on Intelligent Transportation Systems, Proceedings, ITSC  

Understanding driver's foot behavior helps reduce pedal-related traffic accidents. Conventional systems introduced wearable devices to track drivers' foot motion and tracking drivers' feet using non-contact sensors is still challenging. Moreover, to better understand driver's foot behavior, it is required to stably track drivers' small foot motion and at the joint level. To cope with this problem, we develop a novel foot motion tracking system, referred to as 'JointFlow.' This system integrates a pose estimation model, i.e., OpenPose, with Optical Flow. At first, a keypoint region-based convolutional neural network (keypoint R-CNN) is trained to detect the joints of the foot. At the same time, the Lucas-Kanade algorithm of Optical Flow is used to calculate the motion of each foot joint between consecutive frames. We implemented and evaluated the system using a real-world driving dataset of 50 drivers. The evaluation result shows that JointFlow could track both small and large foot motion. By comparing with the conventional pose estimation model, we could confirm that JointFlow tracked small foot motion more stable.

DOI： 10.1109/ITSC55140.2022.9922332

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Scopus

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：公益社団法人 自動車技術会  

研究において，質問紙尺度を複数使うことが多く，負担が大きい．有効な項目を用いて，適切に高齢ドライバの差異を表現することができれば，効率的である．本稿では，潜在ランク理論を用いて分析し，大きな情報の損失なく，既存の質問紙の項目を減らし，運転に関連する尺度を複数取り入れた，網羅的な質問紙を作成した．

DOI： 10.11351/jsaeronbun.53.1114

CiNii Research

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：公益社団法人 自動車技術会  

38項目で構成された運転負担感受性チェックシートは，一般ドライバ向けに作成されたものである．本研究では，高齢ドライバを対象とした短縮版の作成を試みた．その結果，運転に対する負担感がどの程度あるかについて，10項目程度で十分測定可能であることを明らかにした．

DOI： 10.11351/jsaeronbun.53.560

CiNii Research

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：公益社団法人 自動車技術会  

タッチパネル式ディスプレイとCGを組み合わせたリスク評価テストを開発し，自己評価機能を加えることにより，セルフモニタリング能力も測定可能なものとした．指摘されたハザードの種類により，成績の低さが何に由来するのかの推定を試みた．一部の実験参加者は補償意図も分析を行った．

DOI： 10.11351/jsaeronbun.53.397

CiNii Research

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Applied Sciences (Switzerland)  

This paper discusses driving styles while overtaking a vulnerable road user who moves along the shoulder in urban roads. Based on the data obtained from an experiment in pre-defined conditions (combinations of four main effects: Vehicle’s initial speed, lane width of the road, vulnerable road users’ type, and location in the shoulder) with an immersive driving simulator, we analyzed four different driving styles of drivers while approaching and passing the objects. It is shown that drivers took avoidance maneuvers even if there was no clear risk of collision to vulnerable road users. The results showed that the drivers tended to have a unique perception about the lateral passing gap and overtaking strategy with two worth notice groups: Overcaution drivers and reckless drivers. The road characteristic has a statistically significant effect for all types of drivers. Moreover, the effect of the vehicle’s initial speed on overtaking strategy and the effect of vulnerable road user location on minimum lateral passing gap are statistically significant. The findings provide some implications for the development of automotive safety systems that can reduce the risk of overtaking maneuvers in urban areas.

DOI： 10.3390/app11146361

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Scopus

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：公益財団法人 国際交通安全学会  

<p>100年に一度といわれるモビリティ革命により、モビリティは人や物の単なる物理的な移動だけでなく、情報やエネルギーといった目に見えない移動も含んだ巨大なネットワークシステムへと変化している。そして、移動を取り巻く人口動態や環境が変化をする中、新型コロナウィルス感染症（COVID-19）により、モビリティ革命が加速している。本稿では、モビリティ革命の概要と日本を取り巻く社会的状況を踏まえた上で、COVID-19がモビリティに与えた影響を概観し、モビリティ革命が向かう方向性について考察する。</p>

DOI： 10.24572/iatssreview.46.1_57

CiNii Research

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：一般社団法人 日本人間工学会  

DOI： 10.5100/jje.57.S03

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：公益社団法人 自動車技術会  

高齢者のペダル踏み間違いによる事故防止に向けた基礎データ収集を目的として公道における運転シーンと実走行時の計測を行った。　計測は車両にドライブレコーダを取り付け、駐車場からの発進や、加速・減速など、シーン毎に足の動きや踵位置を確認した。さらに足の動きと心身機能との関係を報告する。

DOI： 10.11351/jsaeronbun.52.500

CiNii Research

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：公益社団法人 自動車技術会  

交通事故死者数に占める割合は歩行者や自転車が多く，歩行者などの横を通過する時の運転行動をドライビングシミュレータを用いて調査した．この結果，歩行者の横を通過するときに安全的な運転行動を行うドライバと少し安全性が低いドライバに分類でき，この2つのドライバタイプは，運転行動が大きく異なることが解った．

DOI： 10.11351/jsaeronbun.52.480

CiNii Research

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：公益社団法人 自動車技術会  

新型コロナウイルス(COVID-19)に伴う高齢者の行動変化を質問紙にて調査し，高齢者の行動・心理・利用移動手段の変化とその関係を考察した．結果，他者との接触を避けるため公共交通機関の利用は減少し，徒歩や自転車，人の運転する車での移動が相対的に増加していた．高齢者の外出頻度は低下しておりQOL低下が懸念される．

DOI： 10.11351/jsaeronbun.52.1143

CiNii Research

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 Interdisciplinary Perspectives  

Driver cognitive distraction, a critical factor for road safety, is challenging for researchers to evaluate, especially under real conditions. This paper introduces a novel method for simulating involuntary eye movement by combining the vestibulo-ocular reflex model and the optokinetic response. The difference between the predicted and observed eye movements is then assumed to be a measure of the level of cognitive distraction. When this hypothesis was validated under two sets of conditions, in a driving simulator and in a naturalistic situation, our algorithm was able to capture the cognitive distraction event in the naturalistic case. In addition, we also review and discuss the eye-movement sensor, which has a marked effect on the results of the evaluation, and the potential of using eye-movement sensors to evaluate cognitive distraction in drivers.

DOI： 10.1016/j.trip.2019.100087

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Scopus

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：一般社団法人 日本人間工学会  

<p>本研究では，高齢ドライバの運転に関するさまざまなデータを収集し，運転特性データベース，Data Repository for Human Life-Driving Anatomy （Dahlia）にまとめている．Dahliaには，約300名のドライバが登録し，視覚機能や認知機能，運転適性，運転に関する主観的側面といった人間特性データが含まれている．さらに，ドライバの一部からはnaturalistic driving studyの手法による長期運転行動データを収集し，まとめた．本論文では，データベースの概要とデータ収集方法，データベースの具体例と今後の展望について述べる．</p>

DOI： 10.5100/jje.56.1

CiNii Research

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

This study is the first of a two-part paper. The overall study presents a new methodology to improve the accuracy of hybrid vehicles’ energy-consumption model over conventional transportation modeling methods. The first paper attempts to improve an equation for vehicles’ driving-power estimation to be more realistic and specific for a particular vehicle model or fleet. The second paper adopts the driving-power equation to estimate the requested driving power. Then, the data are utilized to construct the hybrid-vehicle energy-consumption model, namely, the traction-force–speed-based energy-consumption model (TFS model). The main concept of the first paper is to utilize the power-split hybrid powertrain’s accessible on-board diagnostics (OBD) dataset, and its dynamic model to estimate the total propulsion power. Then, propulsion power was applied as the main parameter for driving-power equation development and vehicle-specific coefficient calibration. For coefficient calibration, this study implemented the stepwise multiple regression method to select and calibrate an optimal set of coefficients. Results showed that conventional driving-power equations Vehicle-Specific Power (VSP) LDV 1999 and VSP Prius3Spec provide low prediction fidelity, especially under high-speed (>80 km/h) and heavy-load driving (≥50 kW). In contrast, DrvPwPrius3, proposed in this study, effectively improved prediction to become more accurate and reliable through all driving conditions and speed ranges. It dramatically helped to reduce prediction discrepancy over the conventional equations at heavy-load driving, from an R-square of 0.79 and 0.78 to 0.96. DrvPwPrius3 also the prediction error at high-speed driving from the maximal error of approximately −20 to −5 kW. This study also discovered that aerodynamics and rolling resistance were the primary factors that caused the prediction error of conventional VSP equations. In addition, results in this study showed that both of the approaches used to establish the PPTdrv and DrvPwPrius3 equations were valid for a power-split hybrid vehicle’s driving-power estimation. For the coefficient-calibration part, the stepwise and multiple regression method is low-cost and simple, allowing to calibrate an appropriate set of optimal coefficients for a specific vehicle model or fleet.

DOI： 10.3390/en13020476

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Scopus

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Web of Science

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：一般社団法人 日本人間工学会  

DOI： 10.5100/jje.56.2E4-03

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：公益社団法人 自動車技術会  

近年，高齢ドライバの交通事故が増加し，出会い頭事故が多いことが知られている．そこで，50～82歳のドライバ22名のドライブレコーダによる一時停止交差点の運転データと，認知身体検査や運転スタイルなどのアンケートから，一時停止交差点での左右確認行動や急制動行動と認知身体特性や運転意識の関係を検討した．

DOI： 10.11351/jsaeronbun.51.701

CiNii Research

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：一般社団法人 日本人間工学会  

DOI： 10.5100/jje.56.2e2-04

CiNii Research

記述言語：日本語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE Intelligent Vehicles Symposium, Proceedings  

Japan has become a more aged society and there are more drivers, 65 years of age and above. Cars represent an important mode of transportation for the elderly; however, in recent years, the number of traffic accidents caused by elderly drivers has been on the rise, and this has become a social issue. Thus, to ensure driving safety, we study a driver agent system that provides driving and feedback support to the elderly drivers for encouraging them to improve their driving. In this paper, we present a summary of the proposed agent and report on a set of experiments using our agent for the elderly and non-elderly drivers in an actual environment with car on public roads. From the analysis of driving operations and fixation points during driving, the results revealed that the acceptability of the agent was high, the agent in the actual car environment did not distract the driver, and the agent could improve driving behavior.

DOI： 10.1109/IV47402.2020.9304569

Scopus

記述言語：日本語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：HAI 2019 - Proceedings of the 7th International Conference on Human-Agent Interaction  

Cars represent an important mode of transportation for the elderly; however, in recent years, the number of traffic accidents caused by elderly drivers in Japan has increased. Thus, to ensure driving safety, we are researching a driver agent system that provides driving support and feedback support to elderly drivers to encourage them to improve their driving. In this paper, we report on a set of preliminary experiments using our agent in an actual car environment designed to evaluate the subjective acceptability of and distraction by the agent based on subjective evaluation and analysis of driver fixation points during driving. The results revealed that the acceptability of the agent was high and that the agent in an actual car environment did not distract the driver.

DOI： 10.1145/3349537.3352765

Scopus

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  

With the aim of developing a method for evaluating driver distraction based on the difference between simulated and observed eye movements, we integrated a vestibulo–ocular reflex (VOR) model and an optokinetic reflex (OKR) model. On the basis of 2 × 2 factorial design analysis (VOR model only and VOR+OKR model; with and without visual stimulus), we confirmed that the VOR+OKR model showed a better performance than the VOR model, with a smaller mean-square error. We also conducted an experiment that used an n-back task to simulate mental workload while driving. The mean-square error between the simulated and observed eye movement became larger in the presence of mental workload. This result suggests that the VOR+OKR model could be applied in the evaluation of driver distraction.

DOI： 10.1016/j.trf.2018.02.019

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Scopus

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：World Electric Vehicle Journal  

In the transportation sector, the fuel consumption model is a fundamental tool for vehicles' energy consumption and emission analysis. Over the past decades, vehicle-specific power (VSP) has been enormously adopted in a number of studies to estimate vehicles' instantaneous driving power. Then, the relationship between the driving power and fuel consumption is established as a fuel consumption model based on statistical approaches. This study proposes a new methodology to improve the conventional energy consumption modeling methods for hybrid vehicles. The content is organized into a two-paper series. Part I captures the driving power equation development and the coefficient calibration for a specific vehicle model or fleet. Part II focuses on hybrid vehicles' energy consumption modeling, and utilizes the equation obtained in Part I to estimate the driving power. Also, this paper has discovered that driving power is not the only primary factor that influences hybrid vehicles' energy consumption. This study introduces a new approach by applying the fundamental of hybrid powertrain operation to reduce the errors and drawbacks of the conventional modeling methods. This study employs a new driving power estimation equation calibrated for the third generation Toyota Prius from Part I. Then, the Traction Force-Speed Based Fuel Consumption Model (TFS model) is proposed. The combination of these two processes provides a significant improvement in fuel consumption prediction error compared to the conventional VSP prediction method. The absolute maximum error was reduced from 57% to 23%, and more than 90% of the predictions fell inside the 95% confidential interval. These validation results were conducted based on real-world driving data. Furthermore, the results show that the proposed model captures the efficiency variation of the hybrid powertrain well due to the multi-operation mode transition throughout the variation of the driving conditions. This study also provides a supporting analysis indicating that the driving mode transition in hybrid vehicles significantly affects the energy consumption. Thus, it is necessary to consider these unique characteristics to the modeling process.

DOI： 10.3390/wevj10020022

Scopus

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.5100/jje.55.2C3-6

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：公益社団法人 自動車技術会  

本研究では，ドライバエージェントによって運転行動が変容するのか検証した．エージェントのサポートは，「運転支援」「フィードバック」「運転支援とフィードバック」の3種類とした．その結果，エージェントを使用することで運転行動が改善された．運転行動が最も改善された条件は，「運転支援とフィードバック」だった．

DOI： 10.11351/jsaeronbun.50.134

CiNii Research

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：Advances in Intelligent Systems and Computing  

This study attempted to identify factors associated with driving behavior of elderly drivers to assess their safety and estimate their risk during naturalistic driving. We performed binomial logistic regression using self-reported past crash involvement as a response variable to identify critical factors and provided an estimation model has 18 variables. However, applying driver category based on crash and near-crash events (CNCs) collected from naturalistic driving study employed on-dash cam instead of self-reported crash involvement to the previous model showed lower predictive performance (0.63 for sensitivity and 0.51 for specificity). This implies that the model based on self-reported crash experiences was difficult to detect for drivers with CNC during naturalistic driving. Then, we performed binomial logistic regression based on CNC involvement and indicated another model, where the predictive performance was improved, with 0.81 for sensitivity and 0.70 for specificity. To predict the number of CNCs as drivers’ risk, this study adopted Poisson regression analysis using nine variables selected from the second model. The analyses showed a plausible model and significant variables for the estimation of CNCs. Mini-Mental State Examination (MMSE) was one of the better predictor putting in this model, and showed the probability that lower performance associated with higher number of CNCs. This model for CNC estimation would be helpful for the development of safety programs for elderly drivers with possible incidents.

DOI： 10.1007/978-3-319-96065-4_4

Scopus

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：日本認知心理学会  

<p>自己の運転習慣に関する知識は自己報告によって調査されてきたが，実際の運転記録とは必ずしも一致しない．活動量や運転習慣に関する研究は，活動や運転の頻度，性格が過大評価に繋がることを示したが，運転についての態度を扱った研究は少ない．本研究の50&#8211;83歳のドライバ66名の運転距離と頻度 (日／週) における自己報告と実運転の一致度は距離0.07，日数0.03であった．この一致・不一致に関わる要因を検討するために，頻度や態度を説明変数として二項ロジスティック解析を行った結果，性別と運転スタイル (運転スキルへの自信有無，運転に対する消極性，ステイタスシンボルとしての車) のオッズ比が上位であった．自己報告の過小視，過大視に因子ごとの特徴的な傾向は示されなかったため，実運転との矛盾の方向性には，ここで扱った変数とは異なる内的過程が関与する，または運転への態度によるモニタリングの経験が関与する可能性が考えられる．</p>

DOI： 10.14875/cogpsy.2019.0_40

記述言語：日本語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IEEE Conference on Intelligent Transportation Systems, Proceedings, ITSC  

Near-infrared spectroscopy (NIRS) is a promising solution for classifying mental workload while driving, which is important for creating a support system and preventing traffic accidents. Most of the existing research classified mental workload levels via machine learning or deep learning algorithms, where the sliding window time plays an important role in obtaining the features. This study investigated a novel classification of mental workload level using NIRS data by the difference of sliding window time in both channel-independent and subject-independent scenarios. Five sliding times from 1 to 5 s were tested for classification of the mental workload level in 60 experiments in the naturalistic condition. The results indicated that the sliding times were not significantly related to the accuracy of classification using NIRS data when the sample size was just enough. Furthermore, this study succeeded in indicating the driver mental workload using NIRS information in the naturalistic situation with autocross and car-following conditions with an accuracy of over 80%.

DOI： 10.1109/ITSC.2018.8569996

Scopus

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：日本認知科学会  

&ensp;This study investigated which factors affect the usability evaluation of an ACC (Adaptive cruise control). In the experiment, the participants drove a Toyota Prius car with an ACC on real highway. 215 different kinds of driving data were sampled at 60 Hz during driving. At each of the six designated stop points set on driving course, the participants stopped the car and evaluated the usability of the ACC by answering Usability Questionnaire for Automation System. The participants' driving styles were measured with Driving Style Questionnaire. As results of multiple regression analyses,we found how the participants' driving styles, the driving control of the ACC, and the participants' intervention in the driving control of the ACC influenced the usability evaluation. The results were discussed in terms of the human-automation interaction and the design principles of an ACC.

DOI： 10.11225/jcss.25.310

CiNii Research

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.3389/fnhum.2018.00431

Web of Science

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：日本認知科学会  

&ensp;This article reviewed the association between safe driving and cognitive impairment in elderly individuals, and discussed leaving problems about assessing elderly drivers for fitness to drive and facilitating their mobility. This review placed particular emphasis on the concept of mild cognitive impairment (MCI), which has been used in clinical practice and research over the last two decades. The technical term "MCI" has been based on various criteria, contributing to the difficulty in achieving a consistent explanation of the results from previous studies. Each diagnosis was therefore summarized at first, then previous studies were reviewed to gain an understanding of the impact of cognitive decline on driving safety in drivers with MCI and dementia. Findings of previous studies were also classified into each cognitive disorder due to specific disease (e.g. Alzheimer's disease; Perkinson's disease; Lewy body disease; frontotemporal lobar degeneration). Finally, the needs of future studies regarding safe-driving and mobility maintenance for elderly individuals are discussed.

DOI： 10.11225/jcss.25.243

CiNii Research

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.dib.2018.03.097

Web of Science

PubMed

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IEICE Transactions on Information and Systems  

In recent years, the number of traffic accidents caused by elderly drivers has increased in Japan. However, cars are an importantmode of transportation for the elderly. Therefore, to ensure safe driving, a system that can assist elderly drivers is required. We propose a driver-agent system that provides support to elderly drivers during and after driving and encourages them to improve their driving. This paper describes the prototype system and the analysis conducted of the teaching records of a human instructor, the impression caused by the instructions on a subject during driving, and subjective evaluation of the driver-agent system.

DOI： 10.1587/transinf.2017EDP7203

Web of Science

Scopus

CiNii Research

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 Automotive Engineering  

We have developed a method to estimate driver distraction by mean of involuntary eye movement of the vestibulo-ocular reflex (VOR) and optokinetic response (OKR) by using a driving simulator. This paper presents a practical application of the method to the real vehicle situation. The main concern was whether we can measure the eye movement of VOR and OKR caused by the road surface vibration in the situation. The experiments were conducted with participants sitting on the passenger seat for safety reasons. The results have shown that our method can be applied for evaluating cognitive distraction not only in a driving simulator but also in actual vehicles.

DOI： 10.20485/jsaeijae.9.1_1

Scopus

CiNii Research

記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1299/jsmetokai.2018.67.408

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：HAI 2018 - Proceedings of the 6th International Conference on Human-Agent Interaction  

In recent years, the number of traffic accidents caused by elderly drivers in Japan has increased. Cars are an important mode of transportation for the elderly. Thus, to ensure their driving safety, a system that can assist elderly drivers is required. In this study, we propose a driver agent system that provides support to elderly drivers during and after driving and encourages them to improve their driving. In this paper, we describe the proposed driver agent system. We conducted an experiment to evaluate driving behavior improvement through three types of support: driving support, review support, and a combination of both. The results revealed that the combination of both supports lead to the greatest improvements in driving behavior and was most acceptable to elderly drivers.

DOI： 10.1145/3284432.3284444

Web of Science

Scopus

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Web of Science

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：31st International Electric Vehicle Symposium and Exhibition, EVS 2018 and International Electric Vehicle Technology Conference 2018, EVTeC 2018  

In the transportation sector, fuel consumption model is a fundamental tool for vehicles’ energy consumption and emission analysis. Over the past decades, Vehicle Specific Power (VSP) has been adopted in a number of studies to estimate vehicles’ instantaneous driving power. Then, the relationship between driving power and fuel consumption is established as a fuel consumption model. However, this paper has discovered that driving power is not the only factor that indicates vehicles’ fuel consumption. Thus, this study proposes a new methodology for a fuel consumption model development based on fundamentals of hybrid powertrain operation characteristics, which aim to minimize error from the conventional modeling method. First, this study introduces a new driving power estimation equation calibrated for Toyota Prius generation 3. Then, Traction Force-Speed Based Fuel Consumption Model (TFS model) is proposed. By combining these two processes together, it provides a significant improvement on fuel consumption prediction error compared to the conventional VSP prediction method. The absolute maximum error was reduced from 57% to 23%, and more than 90% of the predictions fell inside the 95% confidential interval. In addition, the results show that the proposed model well captures the efficiency variation of the hybrid powertrain. This model is also applicable throughout a variety of real-world traffic and driving conditions.

Scopus

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：公益社団法人 自動車技術会  

近年，高齢ドライバの加齢に伴う運転能力低下で交通事故が増加している. 高齢ドライバの運転能力に合わせた運転支援を行うためには，運転能力の評価を行う必要がある．本研究では，一時停止交差点の運転における，教習所指導員による運転教示の結果とドライブレコーダの運転データを用いて，運転能力の評価手法を提案した．

DOI： 10.11351/jsaeronbun.49.384

CiNii Research

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：Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)  

In this study, we investigate the factors affecting the usability evaluation of an adaptive cruise control (ACC) system. In this experiment, the participants drove a Toyota Prius car with an ACC on a highway. We sampled 215 types of driving data recorded at a frequency of 60 Hz during driving. At each of the six designated stop points on the driving course, the participants stopped their cars and evaluated the usability of the ACC system by answering the usability questionnaire for automation systems. The participants’ driving styles were measured using the driving style questionnaire. The multiple regression analyses showed that the participants’ driving styles, the ACC’s driving control, and the participants’ intervention in the driving control of the ACC influenced the usability evaluation. The results were discussed in terms of the human–automation interactions and the design principles of an ACC.

DOI： 10.1007/978-3-319-91122-9_36

Web of Science

Scopus

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：一般社団法人 日本人間工学会  

<p>本研究では，ドライバエージェントの受容性を明らかにする為に，エージェントに対する主観的評価実験を行った．評価者は，高齢者を含む幅広い年齢である．評価するエージェントは「音声」「映像」「ロボット」の3種類の形態である．エージェントに対する評価の結果，「親しみを感じる」等の評価項目では，高齢層と非高齢層に共通して，ロボットエージェントの評価が高かった．また，「邪魔だと思う」等の評価項目では，音声・映像よりも，ロボットエージェントの評価が低かった．このことから，ロボットエージェントは受容性が高く，阻害要因になりにくいと考えられる．また，ドライバエージェントを繰り返し使用することで，評価結果が変化したことから，継続利用の影響も示唆された．今後の研究課題として，最も受容性の高かったロボットエージェントを対象とした運転後の行動変容や長期利用に伴う変化等について検討が必要である．</p>

DOI： 10.5100/jje.53.214

CiNii Research

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Advances in Intelligent Systems and Computing  

We have shown that the driver distraction can be quantitatively estimated from the vestibulo-ocular reflex (VOR) that is a type of involuntary eye movement. However, the optokinetic reflex (OKR) was not considered in the previous models. Here, we developed a new model with both VOR and OKR. Using the new model, we investigated the effect of mental workload and aging on the involuntary eye movement as well as the driving performance. In this study, we evaluate driver distraction of younger group (age 20-59) and older group (age 60 and above) while driving with/without mental workload. Total 12 participants (6 in each group) who drive on a daily basis participated in the experiment to evaluate driver distraction. As expected, we succeed in applying VOR and OKR models to evaluate driver distraction while driving. Based on that, the effects of mental workload and aging on driver distraction were analyzed. The results indicate that the older group shows worse performance, especially under the distracted driving condition.

DOI： 10.1007/978-3-319-41682-3_30

Web of Science

Scopus

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：HAI 2017 - Proceedings of the 5th International Conference on Human Agent Interaction  

In recent years, the number of traffic accidents caused by elderly drivers has increased in Japan. However, a car is an important mode of transportation for the elderly. Therefore, to ensure safe driving, a system that can assist elderly drivers is required. In this study, we propose a driver-agent system that provides support to elderly drivers during and after driving and encourages them to improve their driving. This paper describes the prototype system based on the analysis of the teaching records of a human instructor, and the subjective evaluation of driving support to elderly driver from three different agent forms, a voice, visual, and robot. The result revealed the robot form is more noticeable, familiar, and acceptable to the elderly than other forms.

DOI： 10.1145/3125739.3125743

Web of Science

Scopus

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 Automotive Engineering  

The main purpose of this study is to investigate the effect of visual stimulus on voluntary eye movement during driving. In this paper, we examine two cases: Driving with/without visual stimulus by means of a driving simulator. We develop a model that consists of both vestibulo-ocular reflex (VOR) and optokinetic reflex (OKR) components. By comparing the observed eye movement and the simulation result of the model, the results of eye movement simulation was more accurate than VOR model only even in a naturalistic situation with optic flow of the visual scene and the driver's voluntary eye movement.

DOI： 10.20485/jsaeijae.8.2_37

Scopus

CiNii Research

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Advances in Science, Technology and Engineering Systems  

This paper describes the concept and configuration of a novel automated safety vehicle stop system, and a future prospect of the study. Intrinsic sudden death may cause traffic accident since such accidents sometimes involve not only the driver but also other traffic users such as passengers and pedestrians. Cardiovascular disease (CVD) is considered as a serious driving risk factor. The pain and others effects of cardiac events degrade driver's performance, and CVD causes ischemia brought by the CVD induces incapacity of driving. In the automated safety vehicle stop system, which our research group has developed, steer-sensors collects bio-signals and a camera captures the driver's posture to monitor driver's incapability. When the driver loses his or her driving capability, the system takes over the maneuver of the vehicle and automatically drives to a safety spot by observing the traffic environment. An emergency scenario was used to demonstrate the system verifying its potential.

DOI： 10.25046/aj020385

Scopus

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：一般社団法人 日本人間工学会  

DOI： 10.5100/jje.53.S248

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：公益社団法人 自動車技術会  

一時停止交差点における高齢ドライバの交通事故が増えている．加齢に伴う，認知機能や視覚機能の低下の影響が指摘されている．本研究では，高齢者を含むドライバを対象に，ドライビングシミュレータを用いて，見通しの異なる一時停止交差点の通過実験を行い，交差点での衝突率とドライバの運転行動，生体機能との関係を分析した．

DOI： 10.11351/jsaeronbun.48.147

CiNii Research

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：一般社団法人 日本人間工学会  

DOI： 10.5100/jje.53.S276

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：25th IEEE International Symposium on Robot and Human Interactive Communication, RO-MAN 2016  

Socially assistive robots have been used successfully for improvement of communication skills of young children. Such robots need to attract children's attention and stimulate sustainable interactions. Many recent research studies propose various approaches for increasing of interaction effectiveness of such robots. In this study, we investigate the effect of robotic movements with animacy on the visual attention of young children. For the experiments, we used the TurtleBot robot. The effect of three different robot movement patterns were explored with the conducted tests: simple circle movement, inanimated movement, and animated movement. Thirty four children (21 males, 13 females, Mean of ages: 4.5) participated in an experiment. Results show that robot movement raises visual attention. Most of the children demonstrated increased interest toward animated robotic movement than simple motion. The animated movement that elicits much interest depends on children's age. The findings of this study contribute to effective use of interactive robots in education and therapy of young children and children with developmental disorder.

DOI： 10.1109/ROMAN.2016.7745192

Scopus

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：2016 IEEE International Conference on Emerging Technologies and Innovative Business Practices for the Transformation of Societies, EmergiTech 2016  

Cardiovascular disease (CVD) is a considerable risk factor of driving. The pain of cardiac events distracts driver's concentration, and ischemia brought by the CVD induces incapacity of driving. In this study, a prototype of the automated safety vehicle stop system has been developed. The system collects bio-signals through the steer-sensor and recognizes the driver's posture by a camera, and detects driver's incapacity. The system takes over the vehicle maneuver when the driver lost his capacity, and automatically drives to a safety spot by sensing the traffic environment. The system has been demonstrated in a prepared emergency scenario and verified the potential. This paper describes the concept and configuration of the system, and a future prospect of the study.

DOI： 10.1109/EmergiTech.2016.7737302

Scopus

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

Web of Science

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

Web of Science

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

Web of Science

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Web of Science

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：公益社団法人 自動車技術会  

人間自動車系の研究に用いるドライビングシミュレータ（以下，DS）として，人間の五感の中で最も多くの情報の元となっている視覚情報を重視し，大型の高輝度高精細ビジョンによる没入型立体視ディスプレイを用いて走行環境を再現するDS を構築した．本報では，DS の機能要件とその効果について報告する．

DOI： 10.11351/jsaeronbun.47.783

CiNii Research

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：公益社団法人 自動車技術会  

距離感や奥行き感をリアルに再現する大型5 面没入型立体視ドライビングシミュレータによる追従走行実験により，先行車に比べ35％から71％の燃料消費量増大を確認した．更にドライバ運転操作の比較と車両加減速特性の変更検討により，車両加減速特性の遅れ要素が追従走行時の燃料消費量の増大要因となることが分かった．

DOI： 10.11351/jsaeronbun.47.789

CiNii Research

記述言語：英語   掲載種別：研究論文（学術雑誌）  

Web of Science

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS  

A hip-knee-ankle-foot orthotic system called 'HALO'(Hip and Ankle Linked Orthosis) for paraplegic walking has been developed in our previous study. Each ankle joint of the HALO system is linked with a medial single joint via a wire which allows both feet of the orthosis to stay always parallel to the floor during walking and assists swinging the leg. The tests of the HALO system demonstrated that it allows smoother walking and easy don/doff. In order to improve further the characteristics of the previous design, we started a new project called pHALO aiming at further reducing of the energy expenditure during walking. As a difference from the previous solution where ankle joints were restrained, the new solution will incorporate two actuators to control the ankle joints angles. As an intermediate step from the development of the pHALO system, in this study we added to the existing system a feedback PI controller to control the ankle joint angle of the right foot in the push-off phase and conducted an experiment to evaluate the effect of the new design on the walking patterns and energy efficiency. The results showed longer stride length, faster gait speed, smaller variation of the CoG, and less energy consumption.

DOI： 10.1109/EMBC.2015.7319694

Scopus

PubMed

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

Web of Science

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：日本知能情報ファジィ学会  

近年，高齢ドライバによる交通事故が増加している．加齢に伴う身体機能・認知機能の変化の影響が指摘されているが，自動車は高齢者の重要な移動手段であるため，高齢者が安心・安全に運転できるよう支援が必要である．そこで本研究では，高齢ドライバの運転支援を行うドライバエージェントを提案した．エージェントは，情報提供や注意喚起などの運転支援と，運転行動の振り返りにより改善を促すフィードバック支援を行う．本報告では，エージェントによる運転支援方法を検討するため，運転指導員による指導方法の分析を行った．その結果，指導内容の分類と被指導者が受ける印象に関する知見が得られたため，これを報告する．

DOI： 10.14864/fss.31.0_375

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：日本認知心理学会  

本研究は，運転支援や機能訓練に役立てる知見を得るために，高齢ドライバの人間特性を多角的に把握することを目的とした．本報告は，そのうち運転適性検査を用いて高齢ドライバの刺激-反応特性を検討した．50代15名，60代40名，70歳以上45名が参加し，全員にインフォームド・コンセントを行った後，認知機能検査や高齢者講習と同種の運転適性検査器を用いて7つの検査を実施した．7つ中4つの検査の反応時間と正答率を用いた分析から，60代以上は刺激数が増加すると反応は遅延し，足反応と刺激数増加が同時に生じる場合には年齢差が顕著になることが示唆された．また，青色に対するパフォーマンス低下が60代以上の反応時間と正答率でみられ，赤色に対しては反応が速くなるという色の効果が示された．以上の結果から，運転適性検査により高齢ドライバの刺激-反応特性が得られ，運転時のパフォーマンス低下につながる要因が示唆された．

DOI： 10.14875/cogpsy.2015.0_122

担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

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：IFAC Proceedings Volumes (IFAC-PapersOnline)  

This study aimed to develop a simple method that can predict the car-following tendency of the driver. Based on the analysis of the naturalistic driving data, some parameters such as the throttlepedal released timing and the average deceleration by braking were found to be correlated with the braking timing. Therefore, the car-following tendency was predicted by a model with those parameters. The model was evaluated on the public road and it was shown that the proposed method can predict the car-following tendency well within a short distance.

DOI： 10.3182/20130904-4-JP-2042.00017

Scopus

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：20th ITS World Congress Tokyo 2013  

It is important to understand the driver's car-following tendency to enhance the effectiveness as well as the acceptance of advanced driving support systems. If a system can estimate the driver's usual car-following tendency, it can provide avoidance support matched to his/her sense of normal safety driving when the vehicle is approaching a preceding one. Since the car-following tendency varies not only between drivers but also within a driver by the feeling and/or the driving environment, real-time estimation is essential. This study introduces a method that can easily predict the car-following tendency. The method uses such parameters as the throttle-pedal released timing and the braking timing that were found to be correlated from the naturalistic driving data analysis. It was found that the method can predict the car-following tendency within a short distance. We applied the method to a forward collision warning system and confirmed the potential benefit of the system.

Scopus

担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

記述言語：英語   掲載種別：研究論文（学術雑誌）  

担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

記述言語：英語   掲載種別：研究論文（学術雑誌）  

記述言語：英語   掲載種別：研究論文（学術雑誌）  

記述言語：英語   掲載種別：研究論文（学術雑誌）  

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

記述言語：英語   掲載種別：研究論文（学術雑誌）  

担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

記述言語：日本語  

記述言語：日本語  

記述言語：日本語  

記述言語：日本語  

記述言語：日本語  

一時停止交差点における高齢ドライバの交通事故が増えている．加齢に伴う，認知機能や視覚機能の低下の影響が指摘されている．本研究では，高齢者を含むドライバを対象に，ドライビングシミュレータを用いて，見通しの異なる一時停止交差点の通過実験を行い，交差点での衝突率とドライバの運転行動，生体機能との関係を分析した．

記述言語：英語  

Web of Science

記述言語：英語  

Web of Science

記述言語：英語  

Web of Science

記述言語：英語  

Web of Science

記述言語：英語  

Web of Science

記述言語：日本語  

距離感や奥行き感をリアルに再現する大型5 面没入型立体視ドライビングシミュレータによる追従走行実験により，先行車に比べ35％から71％の燃料消費量増大を確認した．更にドライバ運転操作の比較と車両加減速特性の変更検討により，車両加減速特性の遅れ要素が追従走行時の燃料消費量の増大要因となることが分かった．

記述言語：日本語  

人間自動車系の研究に用いるドライビングシミュレータ（以下，DS）として，人間の五感の中で最も多くの情報の元となっている視覚情報を重視し，大型の高輝度高精細ビジョンによる没入型立体視ディスプレイを用いて走行環境を再現するDS を構築した．本報では，DS の機能要件とその効果について報告する．

記述言語：英語  

Web of Science

本研究は，運転支援や機能訓練に役立てる知見を得るために，高齢ドライバの人間特性を多角的に把握することを目的とした．本報告は，そのうち運転適性検査を用いて高齢ドライバの刺激-反応特性を検討した．50代15名，60代40名，70歳以上45名が参加し，全員にインフォームド・コンセントを行った後，認知機能検査や高齢者講習と同種の運転適性検査器を用いて7つの検査を実施した．7つ中4つの検査の反応時間と正答率を用いた分析から，60代以上は刺激数が増加すると反応は遅延し，足反応と刺激数増加が同時に生じる場合には年齢差が顕著になることが示唆された．また，青色に対するパフォーマンス低下が60代以上の反応時間と正答率でみられ，赤色に対しては反応が速くなるという色の効果が示された．以上の結果から，運転適性検査により高齢ドライバの刺激-反応特性が得られ，運転時のパフォーマンス低下につながる要因が示唆された．

記述言語：日本語  

近年，高齢ドライバによる交通事故が増加している．加齢に伴う身体機能・認知機能の変化の影響が指摘されているが，自動車は高齢者の重要な移動手段であるため，高齢者が安心・安全に運転できるよう支援が必要である．そこで本研究では，高齢ドライバの運転支援を行うドライバエージェントを提案した．エージェントは，情報提供や注意喚起などの運転支援と，運転行動の振り返りにより改善を促すフィードバック支援を行う．本報告では，エージェントによる運転支援方法を検討するため，運転指導員による指導方法の分析を行った．その結果，指導内容の分類と被指導者が受ける印象に関する知見が得られたため，これを報告する．

記述言語：英語  

DOI： 10.1145/2559636.2563698

Web of Science

記述言語：日本語  

記述言語：日本語  

前後方向の接近感として、先行車に近づく感覚と、先行車が迫ってくる際の感覚の２つを仮定し、人間の視知覚理論に基づきPREとして定式化した。実車実験によりその有効性を確認した。TTCやRF、KdB_cなど従来提案されてきた指標とPREの関係を考察し、PREはそれらを包括し拡張した指標であることを示した。

記述言語：英語  

DOI： 10.1016/j.actaastro.2007.11.001

Web of Science

PubMed

記述言語：英語  

Web of Science

DOI： 10.1016/j.actaastro.2005.01.028

PubMed

記述言語：日本語  

The eco-engineering system combining the industrialization of agriculture, forestry and fisheries to create the [1+2] industry with the hybrid utilization of renewables with fossil fuels will reduce the natural eco-system degradation and promote the development of the renewables. The hybrid utilization technology of biomass and coal is one of the eco-engineering process which can contribute to construction of sustainable society and prevention of the natural eco-system degradation in South East Asia. The development solar energy in sunbelt by means of hybrid utilization technology such as solar-hybrid fuel production system can be considered as one of the eco-engineering process, which will contribute to construction of sustainable society without destroying the natural eco-system. The creation of green market for utilization of the hybrid fuels will facilitate to solve the problem on the cost higher compared with that of fossil fules.

記述言語：日本語  

The eco-engineering is discussed from the view point of realization of the sustainable society and creation of the new industry of [1+2+3] industry, which will be empirically proved in the community special zone. This new industrial system can be economically driven by the low cost fuel energy produced by hybridizing fossil fuels such as natural gas and coal with renewable energy of biomass (biomass-hybrid fuel). When this hybrid fuel is mainly used as a low cost fuel for production of the primary industry such as agriculture, forestry, stock raising, and fishery, the productivity in the 1st industry will be increased. This productivity can be further accelerated by introducing the green market for those products made by using biomass in the hybrid fuels. This system can progressively reduce the CO₂ emission by increasing the green market, because the renewable energy of the biomass can be increased.

記述言語：日本語  

In this paper, solar-hybrid reforming of methane to produce hydrogen was proposed and investigated using a xenon lamp pseud-solar radiator. A mixture of methane and steam is introduced into a porous Ni catalyst heated directly by the solar energy passing through a quartz glass, and then, converted into product gases, i.e., hydrogen, carbon monoxide and carbon dioxide. The enthalpy of the product gas was recovered through a reciprocating-flow energy recirculation system using an inert porous ceramics that play a role of heat storage. As a result, it was shown that hydrogen including solar energy was produced quickly and effectively.

記述言語：日本語  

記述言語：日本語  

記述言語：日本語  

In Part 1, a simulation system was developed to examine human spatial orientation in a virtual weightless state. By conducting experiments in several routes of connected modules, we found some relevant variables for spatial cognition errors. Part 2 clarifies the causes of spatial cognition errors by the similar experiments using more complicated routes. The results showed the errors were able to be explained by two causes. One cause was that subjects did not recognize the rotation of the frame of reference, especially more often when they turned in pitch direction rather than in yaw. The other cause was that subjects were incorrect in the place, the direction, and the sequence of turns.

記述言語：日本語  

記述言語：日本語  

In a virtual weightless environment, pointing and modeling tasks were conducted to examine subjects'orientational skills. Subjects who wore a head-mounted display in a reclining chair moved from one end to the other end in several routes that were made by three or four modules that were connected by cubical modules, and pointed to the start point and made the experienced route by a scale model. Analyses of the results show the ability of spatial orientation varies with such variables as the number of bends, the number of embedding planes and the number of planes with respect to the body posture. Subjects who miss the tasks have a tendency not to take the change of the direction of their body axes into account.

記述言語：日本語  

記述言語：日本語  

記述言語：日本語  

記述言語：日本語  

記述言語：日本語  

開催年月日： 2018年5月

記述言語：英語   会議種別：口頭発表（一般）  

DOI： 10.1587/transinf.2017EDP7203

Scopus

開催年月日： 2018年

記述言語：英語   会議種別：口頭発表（一般）  

In this study, we investigate the factors affecting the usability evaluation of an adaptive cruise control (ACC) system. In this experiment, the participants drove a Toyota Prius car with an ACC on a highway. We sampled 215 types of driving data recorded at a frequency of 60 Hz during driving. At each of the six designated stop points on the driving course, the participants stopped their cars and evaluated the usability of the ACC system by answering the usability questionnaire for automation systems. The participants’ driving styles were measured using the driving style questionnaire. The multiple regression analyses showed that the participants’ driving styles, the ACC’s driving control, and the participants’ intervention in the driving control of the ACC influenced the usability evaluation. The results were discussed in terms of the human–automation interactions and the design principles of an ACC.

DOI： 10.1007/978-3-319-91122-9_36

Scopus

開催年月日： 2018年

記述言語：英語   会議種別：口頭発表（一般）  

Scopus

開催年月日： 2018年

記述言語：英語   会議種別：口頭発表（一般）  

In recent years, the number of traffic accidents caused by elderly drivers in Japan has increased. Cars are an important mode of transportation for the elderly. Thus, to ensure their driving safety, a system that can assist elderly drivers is required. In this study, we propose a driver agent system that provides support to elderly drivers during and after driving and encourages them to improve their driving. In this paper, we describe the proposed driver agent system. We conducted an experiment to evaluate driving behavior improvement through three types of support: driving support, review support, and a combination of both. The results revealed that the combination of both supports lead to the greatest improvements in driving behavior and was most acceptable to elderly drivers.

DOI： 10.1145/3284432.3284444

Scopus

開催年月日： 2017年

記述言語：英語   会議種別：口頭発表（一般）  

DOI： 10.1007/978-3-319-41682-3_30

Scopus

開催年月日： 2017年

記述言語：英語   会議種別：口頭発表（一般）  

In recent years, the number of traffic accidents caused by elderly drivers has increased in Japan. However, a car is an important mode of transportation for the elderly. Therefore, to ensure safe driving, a system that can assist elderly drivers is required. In this study, we propose a driver-agent system that provides support to elderly drivers during and after driving and encourages them to improve their driving. This paper describes the prototype system based on the analysis of the teaching records of a human instructor, and the subjective evaluation of driving support to elderly driver from three different agent forms, a voice, visual, and robot. The result revealed the robot form is more noticeable, familiar, and acceptable to the elderly than other forms.

DOI： 10.1145/3125739.3125743

Scopus

開催年月日： 2016年11月

記述言語：英語   会議種別：口頭発表（一般）  

DOI： 10.1109/ROMAN.2016.7745192

Scopus

開催年月日： 2016年11月

記述言語：英語   会議種別：口頭発表（一般）  

DOI： 10.1109/EmergiTech.2016.7737302

Scopus

開催年月日： 2016年7月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2016年7月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2016年7月

記述言語：英語   会議種別：口頭発表（一般）  

開催年月日： 2013年10月

記述言語：英語   会議種別：口頭発表（一般）  

DOI： 10.3182/20130904-4-JP-2042.00017

Scopus

開催年月日： 2013年

記述言語：英語   会議種別：口頭発表（一般）  

Scopus

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.5100/jje.55.2c3-6

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

近年，高齢ドライバによる交通事故が増加している．加齢に伴う身体機能・認知機能の変化の影響が指摘されているが，自動車は高齢者の重要な移動手段であるため，高齢者が安心・安全に運転できるよう支援が必要である．そこで本研究では，高齢ドライバの運転支援を行うドライバエージェントを提案した．エージェントは，情報提供や注意喚起などの運転支援と，運転行動の振り返りにより改善を促すフィードバック支援を行う．本報告では，エージェントによる運転支援方法を検討するため，運転指導員による指導方法の分析を行った．その結果，指導内容の分類と被指導者が受ける印象に関する知見が得られたため，これを報告する．

DOI： 10.14864/fss.31.0_375

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.20786/mera.24.1_45

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.4992/pacjpa.87.0_2c-079-pq

CiNii Research

記述言語：英語   会議種別：口頭発表（一般）  

本研究は，運転支援や機能訓練に役立てる知見を得るために，高齢ドライバの人間特性を多角的に把握することを目的とした．本報告は，そのうち運転適性検査を用いて高齢ドライバの刺激-反応特性を検討した．50代15名，60代40名，70歳以上45名が参加し，全員にインフォームド・コンセントを行った後，認知機能検査や高齢者講習と同種の運転適性検査器を用いて7つの検査を実施した．7つ中4つの検査の反応時間と正答率を用いた分析から，60代以上は刺激数が増加すると反応は遅延し，足反応と刺激数増加が同時に生じる場合には年齢差が顕著になることが示唆された．また，青色に対するパフォーマンス低下が60代以上の反応時間と正答率でみられ，赤色に対しては反応が速くなるという色の効果が示された．以上の結果から，運転適性検査により高齢ドライバの刺激-反応特性が得られ，運転時のパフォーマンス低下につながる要因が示唆された．

DOI： 10.14875/cogpsy.2015.0_122

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

<p>自己の運転習慣に関する知識は自己報告によって調査されてきたが，実際の運転記録とは必ずしも一致しない．活動量や運転習慣に関する研究は，活動や運転の頻度，性格が過大評価に繋がることを示したが，運転についての態度を扱った研究は少ない．本研究の50&#8211;83歳のドライバ66名の運転距離と頻度 (日／週) における自己報告と実運転の一致度は距離0.07，日数0.03であった．この一致・不一致に関わる要因を検討するために，頻度や態度を説明変数として二項ロジスティック解析を行った結果，性別と運転スタイル (運転スキルへの自信有無，運転に対する消極性，ステイタスシンボルとしての車) のオッズ比が上位であった．自己報告の過小視，過大視に因子ごとの特徴的な傾向は示されなかったため，実運転との矛盾の方向性には，ここで扱った変数とは異なる内的過程が関与する，または運転への態度によるモニタリングの経験が関与する可能性が考えられる．</p>

DOI： 10.14875/cogpsy.2019.0_40

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.4992/pacjpa.87.0_1d-079-pn

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.5100/jje.58.1f4-01

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

<p>年々，交通事故件数・24時間死者数が減少する中で，65歳以上高齢者が占める死亡事故件数および死者数の割合は増加傾向である。これは，人口・免許保有者の高齢者の割合が増加したこと，つまり“社会の高齢化”に伴う現象である。高齢者は，衝撃耐性の低さから交通事故の被害リスクが高い。他方で，加齢に伴い，運転に求められる身体的構造，または身体機能や高次な認知機能等や運転技能が低下を示すことから，近年，高齢運転者の加害リスクも指摘されている。ところで「運転」は個人と社会をつなぐ重要な活動であり，個人の健康増進に寄与することから，長寿社会において，運転継続は個々人の幸福，QOLにつながる重要な人間活動と言える。多くの交通参加者が高齢者となる社会背景の中，社会はどうあるべきか，また，わたしたちはいかにあるべきだろうか？本シンポジウムでは，人間を中心に「人生100年時代」の交通安全社会の方向性を検討するため，「高齢者心理」「AIと安全運転評価」「運転と地域医療」「高齢者の免許と生活」「データを活用した健康・都市づくり」などをキーワードに，それぞれの専門家とともに横断的な議論を通して，模索したい。</p>

DOI： 10.4992/pacjpa.86.0_ss-023

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.5100/jje.56.2e4-03

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.5100/jje.58.2e1-01

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.5100/jje.57.s03

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.5100/jje.59.o1b1-03

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.5100/jje.57.341

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.5100/jje.53.s276

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.5100/jje.53.s248

CiNii Research

記述言語：英語   会議種別：口頭発表（一般）  

Driver’s mental workload is not only a critical factor for road safety but also a challenging for the researcher to evaluate. This research introduces a novel of measuring the level of driver mental workload by using the difference between the predicted and observed eye movements. In this paper, the involuntary eye movement predicted based on the combination of the vestibule-ocular reflex model and the optokinetic response. By using n-back task to impose the mental workload for the driver, this hypothesis was validated and confirmed in a driving simulator as well as in a naturalistic situation.

DOI： 10.1299/jsmetokai.2018.67.408

CiNii Research

記述言語：日本語   会議種別：口頭発表（一般）  

DOI： 10.5100/jje.60.2e5-4

CiNii Research

公開番号：2012－234291  

出願国：国内  

公開番号：2012－234290  

出願国：国内  

公開番号：2012－162145  

出願国：国内  

公開番号：2012－008696  

出願国：国内  

公開番号：2012－003710 

出願国：国内  

公開番号：2011－194980 

出願国：国内  

公開番号：2011－006038 

出願国：国内  

公開番号：2010－274838  

出願国：国内  

公開番号：2010－102538 

出願国：国内