ABSTRACT

Intelligent Traffic Sign in Bangkok refers to the Advanced Traveler Information System (ATIS) that provides motorists real-time traffic information. Although such a system has been implemented in Bangkok for a while, motorists’ perceptions of information from intelligent traffic signs have not been well studied. The objective of this study is to investigate motorists’ awareness of the intelligent traffic signs, as well as the effects of traffic information on motorists’ route choice. Based on the analysis of drivers’ perceptions, results indicated that when red color was shown on the intelligent traffic sign, up to 55 percent of motorists would not make a diversion. Moreover, result from statistical analysis using logit model showed that attitudes towards usefulness of intelligent traffic signs, traffic condition in Bangkok and data reliability were among the most significant factors affecting stated route choice decision.

KEYWORDS: Intelligent Traffic Sign, Advanced Traveler Information System, Drivers’ Perceptions, Stated Route Choice Decision

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