Influencing Factors of the Length of Lane-Changing Buffer Zone for Autonomous Driving Dedicated Lanes

Applied Sciences

Peipei Mao¹  Zhengxi Shen¹  Ying Zhang¹  Xu Qu¹  Fujin Hou²  Shujian Wang² 

[1] School of Transportation, Southeast University, Nanjing 211189, China;Shandong Hi-Speed Construction Management Group Co., Ltd., Jinan 250014, China;

关键词: road design;    dedicated lane;    buffer zone;    lane-changing behavior;    principal component analysis;   

DOI  :  10.3390/app12104923

来源: DOAJ

【 摘 要 】

With the development of intelligent transportation, dedicated highway lanes for autonomous vehicles (AVs), necessary for ensuring their right of way, have emerged as critical issues in intelligent transportation research, which makes it necessary to set up specialized lane-changing buffer zones in the lane adjacent to the dedicated one. Restricted by the current situation of intelligent transportation systems, based on NGSIM data, this study filters out typical lane-changing description data featuring lane-changing behaviors and constructs a principal component analysis (PCA) model containing factors affecting the longitudinal driving distance during the whole lane-changing procedure. The validity of the model is evaluated with a significance test. Comparing the PCA model to a general linear regression model, suggestions on setting the length of lane-changing buffer zones are put forward. The length of the buffer zone mainly considers speed, acceleration, and the flow in the dedicated lane. In general, a shorter buffer zone length can be achieved by increasing the design speed of the buffer zone, raising the headway of AVs in the dedicated lane, reducing the acceleration rate of lane-changing vehicles, and reducing the time proportion of the lane change preparation stage, which occurs earlier in the procedure.

【 授权许可】

Unknown