A user-centered approach for the design of advanced traveler information systems

Chen-Ye David Yang, Purdue University

Abstract

The focus of this study is on the design of Advanced Traveler Information Systems (ATIS) from the user's perspective, which consists of the optimal type(s) of ATIS information that should be conveyed to drivers and the most effective way(s) to convey the information. A driver's information processing model in the ATIS environment is proposed in this research work. The proposed model is a qualitative model that explicitly depicts how drivers process ATIS information, from the moment it is received until a decision is made in response to the information. Based on the proposed model and the experimental results of this research, types of ATIS information that meet drivers' needs and capabilities and effective method(s) of conveying information are identified. A driving simulator is developed in this research to assist in investigating driver behavior in the ATIS environment. The research results showed that a driver's familiarity with a given traffic network significantly affects his/her perception of the ideal type of ATIS information and the most effective information conveyance method. When traveling in a familiar network and encountering congestion and delay caused by an unexpected traffic incident, drivers only need short and simple information, such as location of the incident and expected delay time, to assist them in making route diversion decisions. It is found that drivers prefer in receiving ATIS information via auditory format when traveling in the familiar traffic network. For network navigation assistance in an unfamiliar environment, travelers strongly indicated the need for information like alternative route recommendations and the directions to alternative routes provided to them. The combination format (i.e., auditory and visual) is perceived as the best method to transmit information in the unfamiliar network. Transmitting ATIS information via visual displays such as an electronic map can help a driver to "see" his/her vehicle's spatial location with respect to the surrounding traffic network. However, analysis results concluded that a visual display causes greater distraction from driving than an auditory message.

Degree

Ph.D.

Advisors

Kuczek, Purdue University.

Subject Area

Civil engineering|Transportation

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