Could traffic acceleration/deceleration change the rotation of Earth?

Question

For example at a stop light where multiple cars and trucks are accelerating at the same time all the torque from all the vehicles.

Answer 1

No, there won't be a significant effect, because for every instance of a vehicle accelerating in a given direction there must be a corresponding instance of a vehicle slowing down.

Answer 2

Yes, if there is a net acceleration or deceleration due to traffic, it would effect the rotation of the earth. But the effect would be so infinitesimal as to be unmeasurable.

Hope this helps.

Answer 3

You have to consider that at one point all these vehicles had zero velocity before accelerating so they could decelerate at the stop light. The effect of the acceleration and deceleration would cancel out due to conservation of momentum, so no permanent effect.