ผลกระทบของเครื่องหมายจราจรบนพื้นทางไม่ชัดเจนต่อพฤติกรรมการขับขี่ กรณีศึกษา: งานก่อสร้างบนทางหลวงหมายเลข 35

Abstract

The construction of the elevated motorway no.82 (M82) between Bang Khun Thian and Ban Paeo is currently underway, utilizing the existing central median of Rama II Road as a construction zone. While traffic marking modifications have been implemented to mitigate driver confusion, some areas are still under improvement, which has led to disruptions in traffic flow and altered driver behavior. The purpose of this study was to assess how driving behavior is affected by unclear road markings, especially in areas under construction. The study investigated the influence on traffic flow rate, vehicle speed, and lateral position by contrasting driving behavior in work zones on Highway 35 between the section with unclear road markings (km 32+700 Bangkok-bound) and a section with typical road markings (km 15+500 Bangkok-bound). Traffic flow rates were examined, and it was found that sections with typical road markings provided more significant traffic flow rates than sections with unclear road markings. Vehicle speed assessments revealed that vehicles in sections with typical road markings might travel at higher speeds, especially during off-peak periods. On the other hand, both sections' vehicle speed behavior was consistent during peak periods when traffic was heavy. In regards to the lane-changing behavior, the study demonstrated that there was a comparatively high rate of lane-changing in the section with unclear road markings during periods of low traffic density. The sections with unclear road markings also exhibited greater rates of lane crossing compared to the typical road markings section. The study's findings demonstrate how road markings influence drivers' behaviors once traveling in construction areas. The outcomes can be utilized to provide recommendations to coordinate construction activities in compliance with standards, facilitate efficient traffic control during construction, and reduce the risk of accidents.