Final answer:
Vehicles must stop if a pedestrian or bicyclist is within one lane of their half of the roadway.
Step-by-step explanation:
According to the rules of the road, vehicles must stop if a pedestrian or bicyclist is within one lane of their half of the roadway. This means that if a pedestrian or bicyclist is within the immediate lane next to the vehicle's side of the road, the vehicle must stop to allow them to cross safely. Let's say there are three lanes on the roadway, the vehicle must stop if the pedestrian or bicyclist is in the lane closest to the vehicle.