01126707

Component

Variable message sign (VMS) is one of the major components of advanced traffic information systems (ATIS) and is used to provide drivers with real-time traffic information including incidents, congestion, and detours. It is essential that the scheme of VMS message phase and duration should be designed with proper consideration of driver's message reading time, which will depend on various causal factors, such as the number and length of VMS messages, driver's travel speed, and driver characteristics. In this study, extensive field experiments were conducted using specially manufactured portable VMS to obtain driver's message reading time with respect these causal factors. A 500-meter tangent segment having 4 lanes (2 lanes for each direction) was selected for field experiments at the Hanyang University in Korea. Data collection and analysis were undertaken to explore the relationships between the driver's message reading time and various causal factors. Regression modeling techniques were applied to develop an estimation model for driver's message reading time. The proposed methodology for determining VMS message reading time would be greatly useful for ITS designers and planners as they make decisions concerning optimum VMS message phase and duration.

01120148

09-2918

English

15p

2009

Transportation Research Board 88th Annual Meeting

DVD

Figures; Photos; References (7) ; Tables (4)

Advanced traveler information systems; Data collection; Detours; Driver information systems; Operations; Reading; Real time information; Traffic congestion; Traffic incidents; Variable message signs

Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2009 Paper #09-2918

TRIS, TRB

Jan 30 2009 7:18PM