If a slow vehicle is being followed by others that cannot pass, what should the driver of the slow vehicle do?

Answer: D — Pull to the right to allow passing

When a slow vehicle is being followed by others that cannot pass, the appropriate action is for the driver of the slow vehicle to pull to the right to allow passing. This maneuver effectively facilitates the safe passage of faster-moving vehicles and is a common practice to promote traffic flow and prevent congestion. It demonstrates good driving etiquette and consideration for other drivers on the road. Pulling to the right is particularly important on roads where passing lanes may not be available. This action not only helps maintain the pace of traffic but also reduces frustration among other drivers who may be waiting for an opportunity to overtake. By allowing faster vehicles to pass, the driver again enhances the overall efficiency and safety of the roadway. Choosing to keep driving at the same speed, pulling over to the left, or attempting to accelerate would not address the situation effectively and may lead to dangerously congested conditions.