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Causal models of trip replanning in TravTek
| 题名： | Causal models of trip replanning in TravTek |
| 作者： | Schryver, J.C.; |
| 关键词： | 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ROUTING; AUTOMATION; ROAD TRANSPORT; HUMAN FACTORS; ATTITUDES; BEHAVIOR; PLANNING; NAVIGATION; REAL TIME SYSTEMS |
| 摘要： | The TravTek operational field test was conducted to evaluate the effectiveness of route planning, route guidance and various navigational aiding modalities for Advanced Traveler Information Systems in ground vehicles. A causal network was constructed in order to achieve a better understanding of the dependencies among variables implicated in the replanning process. Causal inferences were modeled using path analysis techniques. The original Yoked Driver study reported that addition of real-time navigation planning did not increase trip efficiency during initial trip planning. Data mining of the relatively complete database revealed that the incidence of dynamic trip replanning was only 0.51%or 1 out of every 198 trips. Nevertheless, the replanning acceptance rate was 92.8%, suggesting that less conservative criteria might have been acceptable to drivers. Several points can be made based upon the path analysis techniques. Drivers who rejected better route offers were more likely to be male renters; rejected routes were apparently offered at earlier times with a lower predicted time savings and fewer maneuvers. Failure to accept a better route also apparently resulted in fewer wrong-turn deviations. Contrary to expectations, wrong-turn count and time loss appeared as semi-independent hubs in the resultant causal network. Implications of the path analysis are discussed. Proposals for in-vehicle information systems are formulated to increase driver participation as co-planner, and increase the likelihood that trip replanning will positively impact trip efficiency. |
| 总页数： | 18p |
| 报告类型： | 科技报告 |
相关文献
- TRAVTEK EVALUATION YOKED DRIVER STUDY.
- Trip Generation Rates for Transportation Impact Analyses of Infill Developments. National Cooperative Highway Research Program (NCHRP) Report 758.
- TRAVTEK GLOBAL EVALUATION AND EXECUTIVE SUMMARY. FINAL REPORT.
- TravTek Global Evaluation and Executive Summary
- TRAVTEK EVALUATION MODELING STUDY. FINAL REPORT.
- TravTek Evaluation Task C3. Camera Car Study; Final rept. Sep 92-1994.5
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