This study reports the results of an experimental comparison of three different advanced traveller information systems (ATIS) that provided in-vehicle navigation assistance: Ali-Scout, TetraStar, and written instructions. Driver familiarity and traffic conditions (peak nonpeak) were factors in the study. The study found that few drivers had difficulty finding destinations or got lost during their trip. However, those using Ali-Scout had more difficulty finding destinations and got lost more frequently. Trip durations were significantly shorter (5% overall) for Ali-Scout and TetraStar drivers than for drivers using written instructions. Drivers reported high levels of satisfaction and helpfulness for all systems as well as reporting that the systems caused very little distraction while driving. (For related work on the Fast-trac Troika project, see IRRD 895628).
Abstract