This study examines the effect of warning messages and variable speed limits (VSLs) on driver speed. Using a driving simulator, the study observed behavior of 86 participants who drove a 5-mi section of a freeway. On this freeway, three types of warning message were displayed in variable message signs (VMSs) to warn of an impending speed change. Drivers were typically required to reduce speed first and then increase speed according to VSLs. It was found that when warning messages and VSLs were displayed, participants generally drove at uniform speed and their variation in speed along the section was reduced. Statistical analysis using a binary logit model revealed that there exist correlations of driver speed changes and compliance with speed limits at successive locations of VMS. Findings of the simulator experiment suggest that warning messages and VSLs are beneficial in reducing speed variation and removing congestion. These effects of warning messages and VSLs can potentially reduce crash risk and improve efficiency on freeways.
Testing Effects of Warning Messages and Variable Speed Limits on Driver Behavior Using Driving Simulator
Transportation Research Record
Transportation Research Record: Journal of the Transportation Research Board ; 2069 , 1 ; 55-64
2008-01-01
Article (Journal)
Electronic Resource
English
Effects of Weather-Controlled Variable Speed Limits and Warning Signs on Driver Behavior
Online Contents | 1999
|Effects of Weather-Controlled Variable Speed Limits and Warning Signs on Driver Behavior
Transportation Research Record | 1999
|Effects of Weather-Controlled Variable Speed Limits and Warning Signs on Driver Behavior
British Library Conference Proceedings | 1999
|Driver behavior under a collision warning system - a driving simulator study
Automotive engineering | 1997
|