Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds

Vehicle speeds have a direct relationship with the severity of road crashes and may influence their probability occurrence. Solar-powered active studs been shown to positive effect on driver confidence, but impact vehicle speed in conjunction other features is little understood. This study aims address this gap knowledge through case 20 km section strategic major featuring variety highway infrastructure features. Before-and-after surveys were undertaken at 21 locations along route using manual radar measurement. Analysis nearly 10,000 measurements showed no statistically significant change mean following implementation studs. Linear regression models are proposed for two different posted limits, associating expected speed. The suggest that chiefly influenced by merges, curves, gradients, ambient light conditions. findings should provide confidence be implemented without negative speed-related safety. work also provides further expansion evidence base describing speeds.