การจัดการจราจรสำหรับรถจักรยานยนต์ กรณีศึกษามหาวิทยาลัยสงขลานครินทร์

Abstract

Road traffic crashes are a global public health problem, which is the main cause of deaths, injuries, and disabilities in many countries. Especially in Southeast Asia, this problem is the highest compared to the other regions. According to the Global Road Safety Report 2018, 43 % of motorcycle users were killed on the roads in Southeast Asia. In Thailand, it was found that 55 % of road users are motorcyclists in which they were killed approximate 74 % annually. A major cause of this tragic problem is a mixed traffic flow between the motorcycle and other vehicles. This research aims at presenting traffic management for the motorcycle lane. The main road section between Faculty of Engineering roundabout and Faculty of Natural Resources roundabout in the Prince of Songkla University, Hatyai campus, was selected as a case study. In the research, physical geometry, traffic flow, and speed data were collected. Traffic problems both congestion and safety issues were also investigated. Moreover, three alternatives of motorcycle lane width, including 1.5, 1.8 and 2.0 meters, were proposed. The proposed alternatives were then evaluated the traffic flow performance (i.e. travel time, delay, speed and level of service) by applying the traffic microsimulation model developed using VISSIM package and also evaluated the traffic safety performance applying the Surrogate Safety Assessment Model (SSAM). The outputs from the previous evaluations were used to determine the benefit to cost ratio (BCR) of each alternative. The results showed that 1.8 motorcycle lane width could improve both traffic flow and safety significantly. The average travel time, delay time, conflicting points could be reduced by 54 %, 89 %, and 65 %, respectively. On the other hand, the speed could be increased by 84 % and the level of service could be improved from level D to A. As a result, this alternative was the most suitable with the BCR of 5.94. The research would be a guideline for engineering measures in tackling the motorcycle crash problem in Thailand.