Analytical Method for 3-D Stopping Sight Distance Adequacy Investigation  

作　　者：Fotis S. Mertzanis Antonis Boutsakis Ikaros-Georgios Kaparakis Stergios Mavromatis Basil Psarianos 

机构地区：[1]School of Civil Engineering, National Technical University of Athens, Athens 15452, Greece [2]School of Civil Engineering and Surveying and Geoinformatics Engineering, Technological Educational Institute of Athens,Athens 12210, Greece [3]School of Rural and Surveying Engineering, National Technical University of Athens, Athens 15452, Greece

出　　处：《Journal of Civil Engineering and Architecture》2015年第2期232-243,共12页土木工程与建筑（英文版）

摘　　要：The adopted 2-D SSD （stopping sight distance） adequacy investigation in current design practice may lead to design deficiencies due to inaccurate calculation of the available sight distance. Although this concern has been identified by many research studies in the past, none of them suggested a comprehensive methodology to simulate from a 3-D perspective concurrently both the cross-section design and the vehicle dynamics in space during emergency braking conditions. The proposed methodology can accurately perform SSD adequacy investigation in any 3-D road environment where the ground, road and roadside elements are inserted by identifying areas of interrupted vision lines between driver and obstacle being less than the required distance necessary to bring the vehicle to a stop condition. The present approach provides flexibility among every road design and/or vehicle dynamic parameter inserted, as well as direct overview regarding design elements that restrict the driver＇s vision and create SSD inadequacies. As a result, precious guidance is provided to the designer for further alignment improvement but mostly an accurate aid to implement geometric design control criteria with respect to both existing as well as new road sections is delivered. The efficiency of the suggested methodology is demonstrated through a case study.

关 键 词：SSD 3-D road alignment design consistency road safety. 

分 类 号：U412.366[交通运输工程—道路与铁道工程] TP317[自动化与计算机技术—计算机软件与理论]