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DIRECT OPERATIONAL FIELD TEST EVALUATION NATURAL USE STUDY. PART 4 RECOMMENDATIONS FOR EXPANDED DEPLOYMENT.
| 题名： | DIRECT OPERATIONAL FIELD TEST EVALUATION NATURAL USE STUDY. PART 4 RECOMMENDATIONS FOR EXPANDED DEPLOYMENT. |
| 作者： | Ristenbatt-Marlin; Underwood-Steven-Eugene; Reed-Thomas; Shahine-Ghassan; Richeson-Rebecca |
| 关键词： | Driver aid systems; Transportation planning; Deployment; Field operational tests; Program evaluation; Information systems; Warning systems; Traffic management; Traffic surveillance; Implementation; Traffic surveys; Highway construction; Communication systems; Radio communications; Transportation safety; Traffic control |
| 摘要： | The DIRECT project compared four low-cost driver information systems. Of the four that were compared, the RDS approach proved superior to the others in toggling reliability and voice quality. The DIRECT project planned to expand the implementation of the radio driver information systems in the final (expanded fleet) stage to get a better understanding of how to improve the service provided by this most highly-rated system. An interesting clue to the drivers needs for information was uncovered in the driver survey and tracking data. The drivers often used the information to avoid highway construction areas. The expanded fleet project proposed herein exploits such insights, as well as other major developments. Our DIRECT experience convinced us that using two subcarriers from an FM station was not feasible due to: (1) the additional cost to lease the additional subcarrier from all participating stations; and (2) the changes it would require in RDS receivers. Hence we now propose a simplified information system, referred to as Route Specific Traffic Alerting System (RSTAS), which uses only the single RDS subcarrier. |
| 总页数： | 1998. pp17 |
| 报告类型： | 科技报告 |
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