Development and validation of safety evaluation method of traffic flow considering vehicle type and gross weight

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656303
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Civil engineering project/Traffic engineering
• Research Institution: The University of Tokushima
• Principal Investigator: YAMANAKA Hideo 徳島大学, ソシオテクノサイエンス研究部, 教授 (20166755)
• Co-Investigator(Kenkyū-buntansha): OKUSHIMA Masasi 徳島大学, ソシオテクノサイエンス研究部, 准教授 (20345797) ; KONDO Akio 徳島大学, ソシオテクノサイエンス研究部, 教授 (10145013)
• Research Collaborator: MOHAMED Rehan Karim マレーシア, マラヤ大学土木工学科, 教授 ; AHMAD Saifizul Abdullah マレーシア, マラヤ大学機械工学科, 講師
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 自動車両重量計測 / 交通安全 / 過積載 / 交通流分析 / 交錯指標 / 国際研究者交流 / マレーシア

Outline of Final Research Achievements

Many kinds of surrogate indicators for evaluating the safety of traffic by flow observations have been proposed, which considers headway time and vehicle deceleration behaviors, but not vehicle weight. In this study, a new index called "Minimum Safe Time Gap" is proposed for the safety evaluation taking account into the deference of deceleration performance due to the vehicle weight, and is verified the validity based on the long-term observation data. In addition, the social effect from enforcement and vehicle detour possibility of overloaded vehicles is estimated. However the development of portable weigh-in-motion device which was originally planned, needs improvement in measurement accuracy and modify of mounting system.

Free Research Field

交通工学