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SIGN SIMULATOR VALIDATED IN FHWA STUDY.
| 题名： | SIGN SIMULATOR VALIDATED IN FHWA STUDY. |
| 作者： | Mahach-KR; Wochinger-K; Marshall-R; Eppich-D |
| 关键词： | BICYCLES-; DEAD-END-STREETS; EQUIPMENT-TESTS; HIGHWAY-CURVES; LABORATORIES-; SIMULATION-; TRAFFIC-SIGNS; U.S.-FEDERAL-HIGHWAY-ADMINISTRATION; VALIDATION-; VISIBILITY-; VISIBILITY-DISTANCE |
| 摘要： | Signsim is the sign simulator used by the Federal Highway Administration (FHWA) to evaluate a group of traffic signs that were proposed as national standards. Based on the simulator results, FHWA made different recommendations for each of the signs to the National Committee on Uniform Traffic Control Devices in January 1996. The committee, however, questioned the validity of Signsim and requested that the system be validated in some manner. The validation study was performed at the Turner-Fairbank Highway Research Center by recording the detection distances of actual scaled signs in their Photometric and Visibility Laboratory (PVL) and then by comparing the PVL detection distances and the Signsim detection distances to determine if they were significantly different. The main goal of the Signsim study was to provide recommendations on 13 specific sign types for the next revision of the Manual on Uniform Traffic Control Devices (MUTCD). From the original 13 sign types, six were recommended for inclusion in the MUTCD revision. In the PVL study, four of the six recommended sign types were tested for recognition distances. Results revealed significant differences between the recognition distances obtained using Signsim and in the PVL for all signs except for the third Dead End sign and the "bike with text" signs. The recognition distances recorded in Signsim were consistently shorter than those recorded in the PVL. However, the majority of the results compared were similar, if not exactly the same. It was concluded that Signsim is a reliable laboratory for producing realistic results. |
| 总页数： | Public Roads. 1999/07. 63(1) pp41-44 (1 Phot., 3 Tab., 1 Ref.) |
| 报告类型： | 科技报告 |
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