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1·Volvo has introduced a system called City Safety that reduces the chance of low-speed crashes in which the driver fails to brake in time, usually causing a rear-end collision.

沃尔沃（Volvo）也引入了一个名叫“城市安全”的系统，它可以降低因驾驶员未能及时刹车而导致低速撞车的可能性（往往是追尾）。

2·Based on this premise, a suit of Rear-end Collision Warning System is studied and taped in this paper.

本论文以此为前提，开发研究了一套高速公路追尾碰撞预防报警系统。

3·Rear-End Collision Danger.

追尾危险。

4·This paper can solve the key difficulty of lane detection, car detection and distance measurement based on central perspective principle and image process in order to alarm rear-end collision.

本文利用中心透视原理和图像处理的方法可以解决车道识别，车辆识别和车间距测量的关键难点，达到高速公路汽车追尾预警的目的。

5·But today's wenzhou rear-end collision really let a person feel sorrow!

但今天的温州追尾事件真让人感到悲哀！

6·An new scheme for automobile's rear-end anti-collision is proposed by ultrasonic approach;

利用超声波探测技术，提出了一套基于超声波测速的汽车防追—尾告警系统方案；