When motorcyclist B is trying to pass the car in front of motorcyclist A, what is the best action?

When motorcyclist B is attempting to pass the car in front of motorcyclist A, the safest and most responsible action is to return to the right portion of the lane behind rider A after completing the pass. This choice prioritizes safety and helps maintain proper distance between the motorcyclists.

Returning to the lane behind rider A ensures that there is adequate space between both riders, reducing the risk of collisions. It creates a buffer zone where both motorcyclists have a better view of the road ahead and can respond to any potential hazards. Maintaining this distance is especially important on a motorcycle, where stability and reaction time are critical.

Moreover, riding next to another motorcyclist or completing the pass in front of them could potentially lead to situations where either rider's visibility is compromised or where they might inadvertently impede one another. Hence, returning to a safe position behind rider A reflects good judgement and aligns with safe riding practices.