speed signaling

例句：

1. 1.The car's speed signaling system is very advanced.
   汽车的速度信号系统非常先进。
2. 2. The police used speed signaling to keep a safe distance from the accident.
   警方使用速度信号来与事故保持安全距离。
3. 3. The driver was given a speed signaling violation for exceeding the speed limit.
   司机因超速被处以速度信号违规。