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SIMULATIONS OF VEHICLE TRAJECTORIES AND MANEUVERS IN VEHICLE-FOLLOWING COLLISIONS.
| 题名： | SIMULATIONS OF VEHICLE TRAJECTORIES AND MANEUVERS IN VEHICLE-FOLLOWING COLLISIONS. |
| 作者： | Chan-C-Y |
| 关键词： | SIMULATION-MODELS; VEHICLE-TRAJECTORIES; MANEUVERS-; VEHICLE-FOLLOWING-COLLISIONS; AUTOMATED-HIGHWAY-SYSTEMS; HARD-BRAKING; REAR-END-COLLISIONS; ACCIDENT-ANALYSIS |
| 摘要： | In operations of automated vehicles or Automated Highway Systems (AHS), vehicles may be designed or commanded to travel with a small spacing between them. The automated vehicles should travel safely in normal operating conditions. If collisions occur as a result of failures or malfunctions, it is necessary to minimize the consequences of the collisions. This paper presents work conducted to understand the effects of operational variables on the outcome of collision in vehicle-following operations and the feasibility of controlling vehicle motions in collisions. A two-dimensional simulation model is used in this study. The model allows translational movement on a horizontal plane and the rotational motion (yaw) about the vertical axis of a vehicle. A hard-braking failure scenario is simulated in this study with the leading vehicle decelerating while the following vehicle fails to brake accordingly. By using this model with a variety of initial conditions and vehicle parameters, the effects of offset, vehicle size, spacing and vehicle speed on the outcome of collisions are evaluated. Several follow-up maneuvers by applying steering or braking inputs on the vehicles to respond to the failure event are also simulated to investigate the feasibility of control actions. Different approaches of follow-up actions are examined to discuss the hazards and benefits of these maneuvers. The work discussed in this paper represents a continuation of safety evaluation for AHS in various operating conditions and an initiation of a comprehensive model of collision analysis for future studies. |
| 总页数： | Conference Title: Merging the Transportation and Communications Revolutions. Abstracts for ITS America Seventh Annual Meeting and Exposition. Location: Washington, D.C. Sponsored by: ITS America. Held: 19970602-19970605. 1997. n. |
| 报告类型： | 科技报告 |
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