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In-vehicle navigation systems: research on driver behavior and traffic system performance
Published May 17, 1992 by Intelligent Transportation Systems in United States
Event: Surface Transportation and the Information Age~Proceedings of the IVHS America 1992 Annual Meeting
This paper describes research on driver reaction to in-vehicle navigation systems and analysis of the consequences of driver behavior on network traffic flow. The research involved both a human factors simulation experiment and traffic flow simulation analysis of the effects of driver decision making behavior in attempting to avoid non-recurring congestion by diverting to alternate routes with the aid of in-vehicle navigation systems. The objective of the driver behavior experiment was to compare the effect of various experimental navigation systems on driver route diversion and alternate route selection. The objective of the traffic flow simulation analysis was to determine the consequences of driver decision making behavior on traffic network congestion. The experimental navigation system configurations included three map based systems with varying amounts of situation information and a non-map based route guidance system.
The human factors study results indicate that navigation systems characteristics can have a significant effect on driver diversion behavior, with better systems allowing more anticipation of traffic congestion. Traffic flow simulation analysis showed that these effects on driver decision making behavior result in a net improvement in network flow. In-vehicle navigation systems that provide information on traffic congestion and/or alternate route guidance lead to improvement in traffic network average speed according to the traffic flow simulation analysis, and the speed improvement increases with the percentage of vehicles equipped with navigation systems.