This synthesis reports on the state of the practice in real-time traveler information systems. Emphasis is placed on the needs and expectations of travelers, the current status of a variety of traveler information systems in the United States, available and emerging data sources, and business models for sustaining traveler information. This synthesis will benefit state DOT transportation managers and others that provide or seek to provide affordable, accurate, timely, and effective information in a format that travelers can use. Four major activities were undertaken in this synthesis effort. A literature review of previous studies, evaluations, and research activities was conducted. In addition, a survey was distributed to 51 unique public agencies operating traveler information systems that achieved a 65% (33/51) response rate. A third major activity performed was to observe and test as many statewide, regional, and local traveler information systems as possible. Observing content and presentation of traveler information systems allowed the consultant to avoid asking extra survey questions and allowed for map presentations to describe types of content nationwide. A fourth major activity involved a number of in-person meetings and telephone discussions with a variety of transportation professionals representing both public and private sector industries with experience in either research, operating, or evaluating traveler information systems. (Author/publisher)
Abstract