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SPEED-PROFILE MODEL FOR TWO-LANE RURAL HIGHWAYS.
| 题名： | SPEED-PROFILE MODEL FOR TWO-LANE RURAL HIGHWAYS. |
| 作者： | Fitzpatrick-K; Collins-JM |
| 关键词： | Acceleration-Mechanics; Deceleration-; Design-consistency; Equations-; Geometric-design; Highway-design; IHSDM-Computer-model; Mathematical-models; Mathematical-prediction; Rural-highways; Speed-; Speed-profile; TWOPAS-Computer-model; Two-lane-highways |
| 摘要： | Design consistency refers to highway geometry's conformance with driver expectancy. Generally, drivers make fewer errors at geometric features that conform with their expectations. A proposed method for evaluating design consistency is to predict the speed along an alignment by using a speed-profile model. A speed-profile model was developed by using the following: speed prediction equations that calculate the expected speed at horizontal, vertical, or combination curves; assumed desired speed for the roadway; TWOPAS equations that determine the performance-limited speeds at every point; acceleration and deceleration rates; and several documented assumptions. The speed-profile model can be used to evaluate the design consistency of a facility or to generate a speed profile along an alignment. In conclusion, the speed-profile model developed appears to provide a suitable basis for the IHSDM (Interactive Highway Safety Design Model) design consistency module. |
| 总页数： | Transportation Research Record. 2000. (1737) pp42-49 (4 Fig., 4 Tab., 6 Ref.) |
| 报告类型： | 科技报告 |
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- SPEED-PROFILE MODEL FOR A DESIGN-CONSISTENCY EVALUATION PROCEDURE IN THE UNITED STATES.
- SPEED PREDICTION FOR TWO-LANE RURAL HIGHWAYS.
- PRELIMINARY VALIDATION OF A SPEED-PROFILE MODEL FOR DESIGN CONSISTENCY EVALUATION.
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