Human Factors in Intelligent Transportation Systems

By Woodrow Barfield; Thomas A. Dingus | Go to book overview

CHAPTER 11
DETERMINING USER REQUIREMENTS FOR INTELLIGENT TRANSPORTATION SYSTEMS DESIGN

Linda Ng University of Washington

Woodrow Barfield Virginia Polytechnic Institute and State University

An exciting aspect of Intelligent Transportation Systems (ITS) is that it will allow real-time traffic information (e.g., level of congestion, speed limits) and other valuable sources of information (e.g., roadside services) to be delivered to motorists in their vehicles. Because there is a tremendous range of potential information for delivery to motorists, an important goal for researchers in ITS is to determine what information users would like to receive in their vehicles. This will be an especially difficult task for transportation specialists because of the wide variety of users who will access information using ITS. For example, these users will include private drivers who commute to work, commercial drivers who transport goods and people, and dispatchers who help drivers arrive at various locations in a timely and efficient manner.

Based on results obtained primarily from surveys of potential users of ITS, this chapter provides some of the basic information requirements for ITS that are beginning to emerge from the literature. These requirements are based on the information needs of different user groups representing the driving population, on how ITS information should be presented to these different groups, and on what groups would benefit the most from different types of information. In this chapter, specific focus is placed on the Advanced Traveler Information Systems (ATIS) segment of ITS and the ATIS portion of Commercial Vehicle Operations (CVO). We begin this chapter by providing a list of questions that will need to be answered in designing ITS based on user requirements. A review of the relevant research relating to

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