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The TravTek safety study entailed the collection of multiple safety- related measures across five different empirical studies. The studies included the Rental User Study, Local User Study, Yoked Driver Study Orlando Traffic Network Study, and the Camera Car Study. The studies provided vehicle collision data, driver/vehicle performance measures observer measures, and driver subjective measures.
The goal of the TravTek Camera Car Study was to furnish a detailed evaluation of driving and navigation performance, system usability and safety for the TravTek system. To achieve this goal, an instrumented camera car was developed to provide comprehensive driving performance and behavior measurement capability. Six navigation test configurations were evaluated in the camera car study. The following configurations were tested: TravTek route-map and symbolic guidance- map displays (individually and in conjunction with supplementary voice guidance), paper map, and paper textual direction list.
This report first presents an evaluation of the Rental and Local User studies associated with the TravTek advanced traveler information and traffic management system (ATIS/ATMS) project. The focus of the evaluation studies was to obtain data on user perception and performance related to use of the system components in the TravTek vehicles. The vehicles were equipped with route planning, route guidance, traveler information, moving maps and turn-by-turn guidance displays. Evaluation data used the following measures: perceptions of utility, ease of use, safety, driver workload, frequency of system use, and estimates of willingness-to-pay. Results are reported.
The Intelligent Transportation System (ITS) Program is a cooperative effort by government, private industry, and academia to apply advanced technology to the task of resolving the problems of surface transportation. The objective is to improve travel efficiency and mobility, enhance safety, conserve energy, provide economic benefits, and protect the environment. The current demand for mobility has exceeded the available capacity of the roadway system. Because the highway system cannot be expanded, except in minor ways, the available capacity must be used more efficiently to handle the increased demand. ITS applies advanced information processing, communication, sensing, and computer control technologies to the problems of surface transportation. Considerable research and development efforts will be required to produce these new technologies and to convert technologies developed in the defense and space programs to solve surface transportation problems. ITS has been subdivided into six interlocking technology areas. This book addresses human factors concerns for four of these areas: * Advanced Traveler Information Systems are a variety of systems that provide real time, in-vehicle information to drivers regarding navigation and route guidance, motorist services, roadway signing, and hazard warnings. * Advanced Vehicle Control Systems refer to systems that aid drivers in controlling their vehicle particularly in emergency situations and ultimately taking over some or all of the driving tasks. * Commercial Vehicle Operations address the application of ITS technologies to the special needs of commercial roadway vehicles including automated vehicle identification, location, weigh-in-motion, clearance sensing, and record keeping. * Advanced Traffic Management Systems monitor, control and manage traffic on streets and highways to reduce congestion using vehicle route diversion, automated signal timing, changeable message signs, and priority control systems. Two technical areas are not specifically addressed in individual chapters, but many aspects of them are covered in associated chapters: * Advanced Rural Transportation Systems include systems that apply ITS technologies to the special needs of rural systems and include emergency notification and response, vehicle location, and traveler information. * Advanced Public Transportation Systems enhance the effectiveness, attractiveness and economics of public transportation and include fleet management, automated fare collection, and real-time information systems.