Faculty Profiles - NAKAMURA, Hideki

Papers - NAKAMURA, Hideki

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Performance Comparison between Roundabouts and Signalized Intersections Considering Vehicular Conflicts Reviewed

Traffic Engineering Vol. Vol.41 ( No.5 ) page： 69-79 2006.9

Lichtsignalsteuerung in Japanraffic Signal Control in Japan Reviewed

Boltze, M., Kittler, W. and Nakamura, H.

Strassenverkehrstechnik Vol. 50 ( Jahrgang ) page： 531-537 2006.9

An Investigation on Performance Measures for Two-Lane Expressways in Japan

Catbagan, L.J. and Nakamura, H.

Proceedings of the 5th International Symposium on Highway Capacity and Quality of Service, Transportation Research Board page： 209-218 2006.7

Randomness Nature of Breakdown Phenomena in Japan Urban Expressway Merging Sections

Shawky, M. and Nakamura, H

Proceedings of the 8th International Summer Symposium, Japan Society of Civil Engineers page： 239-242 2006.7

An Overview on Capacity and Quality of Service Studies in Japan Invited

Nakamura, H. and Oguchi, T.

Proceedings of the 5th International Symposium on Highway Capacity and Quality of Service, Transportation Research Board page： 87-104 2006.7

Development and Performance Evaluation of a Video Image Processing System for Traffic Flow Analysis- TrafficAnalyzer Reviewed

Vol. vol.62 ( No.3 ) page： 276-287 2006.7

後悔と感心

中村英樹

IATSS review = 国際交通安全学会誌 Vol. 31 ( 1 ) page： 3 2006.6

道路機能に対応した性能照査型道路設計と交通運用

中村英樹

IATSS review = 国際交通安全学会誌 Vol. 31 ( 1 ) page： 75 - 80 2006.6

道路機能に対応した性能照査型道路設計と交通運用

中村英樹

IATSS Review Vol. Vol. 31, No.1 page： 75-80 2006.6

後悔と感心

中村英樹

IATSS Review 論壇 Vol. Vol. 31, No.1 page： 3 2006.6

Review and Perspective of Highway Capacity and Quality of Service Research in Japan

Vol. No.33 page： 4ページ，CD-ROM 2006.6

Research Issues for Designing Roundabout Geometry in Japan

Vol. No.33 page： 4ページ，CD-ROM 2006.6

An Analysis on Traffic Demand Fluctuation Characteristics for the Hierarchical Highway Planning and Design

Vol. No.33 page： 4ページ，CD-ROM 2006.6

A Study on the Various Impacts on Speed-Flow Relationship in Divided TWTL Expressway Sections

Vol. No.33 page： 4ページ，CD-ROM 2006.6

Practical Issues of Applying Image Processing Technique in the Field of Traffic Engineering

Vol. No.33 page： 4ページ，CD-ROM 2006.6

Application of the Microsimulator INSPECTOR to a Feasibility Study on Transit Mall

Vol. No.33 page： 4ページ，CD-ROM 2006.6

A trial argument of planning and design of road network based on time-spatial fluctuation of travel demand

Vol. No.33 page： 4ページ，CD-ROM 2006.6

Performance Measure Evaluation for Japan Two-Lane Expressways

Catbagan, L.J. and Nakamura, H.

85th TRB Annual Meeting page： 10 pages, CD-ROM 2006.1

Evaluation of performance measures for two-lane expressways in Japan

Catbagan, JL; Nakamura, H

HIGHWAY CAPACITY AND QUALITY OF SERVICE 2006 ( 1988 ) page： 111 - + 2006

Language：Japanese Publisher：Transportation Research Record

Two-lane expressways exist as provisional sections for future expansion to four-lane expressways in Japan, although recently such roadway types have been considered for construction for permanent use. Their highway classification may fall somewhere between common (multilane) expressways and ordinary two-lane highways, with full access control and high speed limits but with only one lane per direction of travel. Since this type of highway is unique, methodologies for service level measurement of other uninterrupted-flow facilities are not applicable. Percent time spent following, for instance, is estimated with significant consideration of the opposing flow rate, which has practically no effect on driving conditions since a median barrier is present in all sections. The goal of this study is to analyze and compare possible performance measures that would best describe the traffic operational characteristics of two-lane expressways. Among the performance measures considered, follower density had much promise, having shown strong relationships with flow rate. Since the available data were only those taken during off-peak periods, further observations of follower flow must be made during congested or near-congested flow to establish follower density and volume relationships for all traffic conditions.

DOI： 10.3141/1988-16

DEVELOPMENT AND PERFORMANCE EVALUATION OF A VIDEO IMAGE PROCESSING SYSTEM FOR TRAFFIC FLOW ANALYSIS - TrafficAnalyzer

SUZUKI Kazufumi, NAKAMURA Hideki

Doboku Gakkai Ronbunshuu D Vol. 62 ( 3 ) page： 276 - 287 2006

Language：Japanese Publisher：Japan Society of Civil Engineers

In the field of traffic engineering, video image analysis is an essential technique for correct understanding of traffic phenomena and has been often used for many purposes. However, manual use of this type of technique is a very labor-intensive work. In this study, a multi-functional video image processing system is developed, which can 1) count traffic volumes, 2) track moving objects such as vehicles and pedestrians, and 3) recognize license plates automatically by using image processing technology. Case studies are carried out by applying this system to the actual road traffic, and its performance and accuracy are evaluated. In conclusion, the developed system showed sufficiently satisfactory performance for practical use.

DOI： 10.2208/jscejd.62.276

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