"In the worst case, the carrier cable may fail and the spare tire could become separated from the vehicle, a road hazard for following vehicles that increases the likelihood of a crash," it said.

And testing a vehicle's position related to the line of magnetic marks in the virtual trailing ground is simulated in favor of successive control models.

It brings up the method of calculating the length queue and evanesce time of queue, while the consideration to vehicles space length and followup car flow arriving in period of the red-light.