Driver response to rainfall on urban expressways

 · Speed distributions display greater spread in rainy weather conditions. Drivers respond to rainfall by reducing speed and increasing associated time gap. Drivers tend to maintain same spatial distances between vehicles during rainfall. Camacho et al. ; Rakha et al. ). Unrau and Andrey () investigated driver response to rainfall on urban expressways. Since the early ’s, it has been recognized that weather conditions affect driver behavior and traffic flow. Weather phenomena exert significant impacts on traffic flow related.  · Unrau D, Andrey J () Driver response to rainfall on urban expressways. Transport Res Rec – Article Google Scholar Wang J, Zhang X () Downscaling and projection of winter extreme daily precipitation over North America. J Climate – Article Google Scholar.

Driver Response to Rainfall on Urban Expressways (English) Driver Behavior, Older Drivers, Simulation, User Information Systems. Driver Response to Rainfall on Urban Expressways. The effects of light rainfall on urban freeway operations are modeled to improve understanding of road safety and speed–flow–occupancy relationships in suboptimal weather. Three broader issues also are addressed. Abstract Drivers theoretically acknowledge the need to reduce their speed in inclement weather, but in practice only alter their speed marginally. This paper examines traffic behaviour in three weather categories: fine, rain and misty conditions. Weekly spot speed surveys undertaken on the M4 Motorway, south Wales are analysed. Each survey recorded the 2-lane carriageway. Manual observations.

may trigger a different response by the drivers. Such extreme conditions are outside the immediate focus of the present study. Other inclement weather. Unrau, D., and Andrey J., Driver response to rainfall on urban expressways. Transp. Res. Rec., , 24– Driver response to rainfall on urban expressways. D Unrau, J Andrey. Transportation research record (1), ,