Discussion on traffic capacity and speed limit in work zone on highway

摘要

Highway road conditions are changed largely in the reconstruction compared to normal operation, with traffic capacity falling down due to lane closures, changing lanes frequently caused by merging compulsory, and more accidents resulting from vehicle conflict. Based on VISSIM simulation software, this paper typically studied the most common way of construction, that two-way four-lane, close for single lane, analyzed the effect on the traffic capacity of the work zone in different conditions, and proposed reasonable speed limit option for the security of the work zone.