Open AccessTraffic Safety Evaluation Approach for Reconstructed Freeway Medium Strip Opening Area
Author(s) -
Jiacai Zhou
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/569/3/032082
Subject(s) - flow (mathematics) , transport engineering , traffic flow (computer networking) , traffic sign , computer science , separation (statistics) , sign (mathematics) , environmental science , engineering , mathematics , geometry , computer security , mathematical analysis , machine learning
The remaining of the medium strip of the freeway in reconstruction and widening project reduces the cost of renovation, however brings potential driving risks. In this study, the characteristics of traffic flow changes caused by the opening of the medium strip were analyzed. The safety of the opening length of the medium strip was evaluated based on the interweaving and conflicting driving behavior characteristics, and the opening length of the interweaving area of the medium strip was calculated. In addition, the location of the exit traffic sign was advised for this new traffic flow characteristic. Appropriate opening length of the medium strip and the optimized traffic signs can effectively guide drivers to enter and exit the closed area of the central separation zone safely and comfortably.