Answer :
Final answer:
Exit ramps and the beginnings of one-way streets are also known as entrance ramps, which allow for a smoother merge of vehicles into traffic, contrasting with the potential stopping required at stop signs or traffic lights.
Explanation:
The answer to the student's question is that exit ramps and the beginning of one-way streets are also entrance ramps. These ramps are designed for vehicles to safely enter freeways and highways. They allow traffic to accelerate to the speed of the through lanes and merge without stopping, which is different from a setup involving stop signs or traffic lights, where vehicles might have to come to a complete stop before proceeding. Entrance ramps facilitate a smoother flow of traffic with traffic densities, in contrast to areas where traffic signals might be installed due to safety concerns like pedestrian crossings or vehicle speeding.
