原文传递
Safety risks at traffic light installations.
| 题名： | Safety risks at traffic light installations. |
| 作者： | BRENNER-M (Dr. Brenner+Muennich, Germany); FROST-U (Dr. Brenner+Muennich, Germany) |
| 关键词： | CONFERENCE-; 8525-; TRAFFIC-LIGHT; 0565-; VEHICLE-ACTUATED; 0557-; FIXED-TIME-SIGNALS; 0577-; MEASUREMENT-; 6136-; ACCIDENT-; 1643-; RISK-; 1673-; IN-SITU; 6226-; RED-LIGHT; 0539-; OFFENCE-; 1516-; BRAKING-; 1370-; REAR-END-COLLISION; 1620-; CONFLICT-DRIVING; 1642- |
| 摘要： | As a consequence of growing traffic density in urban areas, time and vehicle actuated traffic controls are more and more often used. This paper presents a research in which flexible traffic light controls were examined for possible safety deficits. It was necessary to prove the following theory: it is suspected in the case of microscopic light control programs with flexible green periods that there is a higher safety risk, in comparison to fixed-time control for drivers who have local road knowledge during the change of signals (from yellow to red). An unexpected red light or a denied green at an "All-Signals-Red-At-Once-Green" -light could lead to unexpected reactions of the road user. Possible conflict situations are emergency braking, rear-end collisions and running the red light. To compare flexible controlled and fixed-time controlled intersections, these types of conflict were analysed. The investigation contained a selection of traffic light controlled intersections in several German cities (e. g. Stuttgart, W黵zburg and Aalen). The study encompassed two intersections with fixed-time control, ten intersections with traffic-actuated control and three intersections with "All- Signals-Red-At-Once-Green" control. In a second measuring series at two intersections in Bremen, different control methods were tested under identical local conditions: fixed time control, semi-vehicle-actuated control and fully traffic-actuated control. For the covering abstract and the URL of the conference see ITRD E205706. (Author/publisher). |
| 总页数： | PROCEEDINGS OF THE CONFERENCE ROAD SAFETY ON THREE CONTINENTS IN PRETORIA, SOUTH AFRICA, 20-22 SEPTEMBER 2000 (VTI KONFERENS 15A). 2001. (15A) pp553-560 (2 Refs.) |
| 报告类型： | 科技报告 |
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