Evaluation of Effectiveness on Speed Indicator Device

Abstract

The speed sign is a sign that measures the speed of the vehicle and displays the speed at that time so that the driver knows. Next, talk to drivers about their speed and the speed limit in that area, which is a passive measure to alert drivers to speeding. This type of sign is widely installed in Thailand. However, there has not been any research into the effectiveness of the label. Therefore, the objective of this study is to assess the effectiveness and impact of speed sign. Driving speed from the car, the study area is a road network inside the Khon Kaen University. There is a road system signage project, all 18 points with a speed limit of 50 km/h. The entire road network extends throughout the area. Analyze the results by comparing them before and after installing. Subsequently, 7 of the 18 sites were selected for velocity data measurement. The appraisal is divided into vehicle types and compares day and evening. Statistical test results showed a significant decrease in personal vehicle speed of 11.04% during daytime and 11.41% at night. While the average speed of the motorcycle, Speed dropped significantly to 8.5% during the day and declined by 12.2% during the night.