United States Department of Transportation
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Abstract:TRAVTEK WAS AN OPERATIONAL FIELD TEST OF AN ADVANCED TRAVELER INFORMATION SYSTEMS (ATIS) AND ADVANCED TRAFFIC MANAGEMENT SYSTEMS (ATMS) TECHNOLOGIES. THIS PAPER SUMMARIZESS THE FINDINGS FROM THE SERIES OF STUDIES THAT CONSTITUTED THE TRAVTEK EVALUATION. TWO FIELD STUDIES, THREE FIELD EXPERIMENTS, AND FOUR ANALYTICAL STUDIES ARE SUMMARIZED. THE RENTAL USER STUDY AND LOCAL USER STUDY WERE NATURALISTIC FIELD STUDIES OF THE USE OF THE TRAVTEK SYSTEM BY RENTAL DRIVERS AND HIGH-MILEAGE LOCAL AREA RESIDENTS RESPECTIVELY. THE YOKED DRIVER STUDY, ORLANDO TEST NETWORK STUDY, AND CAMERA CAR STUDY WERE FIELD EXPERIMENTS THAT EMPIRICALLY ASSESSED THE IN-VEHICLE TRAVTEK SUBSYSTEM WITH RESPECT TO MEASURES OF PERFORMANCE THAT INCLUDED TRIP PLANNING TIME, TRAVEL TIME, SUBJECTIVE WORKLOAD, WRONG TURNS, GLANCE LOCATION, AND GLANCE DURATION. THE MODELING STUDY EXTRAPOLATED EXPECTED SYSTEM PERFORMANCE FROM FIELD STUDIES AND EXPERIMENTS FOR VARIOUS LEVELS OF MARKET PENETRATION, TRAFFIC CONDITIONS NOT OBSERVED IN THE FIELD, AND MEASURES OF PERFORMANCE NOT DIRECTLY MEASURED IN THE FIELD. THE MODELING STUDY PROJECTED EFFECTS ON FUEL CONSUMPTION, VEHICLE EMISSIONS, ACCIDENT RISK, AND OTHER MEASURES FOR MARKET PENETRATION LEVELS OF 1 TO 100 PERCENT.
THE SAFETY STUDY REVIEWED AND INTEGRATED SAFETY-RELATED STATISTICS ACROSS ALL TRAVTEK STUDIES AND EXPANDED ON MODELING STUDY METHODS TO PROJECT SAFETY BENEFITS. THE ARCHITECTURE STUDY THOROUGHLY DOCUMENTED THE TRAVTEK SYSTEM AND EVALUATED SYSTEM COMPONENTS THAT INCLUDED: COMMUNICATIONS, DATA BASES, HARDWARE, SOFTWARE, AND SYSTEM STAFFING.
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