An investigation of the effect of travel time ranges from Indonesian and Japanese motorists^ perceptions of traffic information based on their route choice behavior. Taufik Sugian Sumardi (a,b*), Hiroyuki Oneyama (a), Masami Yanagihara (a)
a) Department of Civil Engineering, Tokyo Metropolitan University, Minami Osawa 1-1, Hachioji-shi, Tokyo 192-0397, Japan
b) Directorate General of Highways, Ministry of Public Works and Housing, Jl. Pattimura No. 20 Jakarta Selatan, DKI Jakarta 12110, Indonesia
Abstract
Traffic information has become personal as a specific group of motorists need specific traffic information. We argued that each road user reacts differently, specifically to the travel time information. The hypothetical travel time was introduced as the actual travel time when motorists receive the traffic information. Then, there were two conditions of road users^ reaction, based on familiarity with the routes and the existence of additional partial information before they chose the preferable route. Those conditions made the travel time perception.
Twenty scenarios were simulated to attest to four groups of road users in each country. The total travel time of each group was compared with the actual travel time. The groups that usually check traffic information before making a trip tend to have lower travel time differences from the actual one. Traffic information provision could be one of the traffic management tools by giving the right message to the right road users.
Keywords: traffic information, travel time perception
