Final answer:
True, a double solid yellow line prohibits vehicles in both directions from crossing the centerline to pass. Traffic signals also enhance safety by controlling vehicle speed and improving pedestrian crossing conditions.
Step-by-step explanation:
The statement is True: A double solid yellow line prohibits traffic from both directions from crossing the centerline to pass. This rule is a basic traffic law in many jurisdictions and is designed to maintain safety on roads where visibility or other conditions make it dangerous to pass. Crossing a double yellow line to overtake another vehicle can lead to dangerous situations, especially where the road is curved or visibility is limited.
Secondly, the implementation of a traffic signal at a busy intersection can greatly improve vehicular and pedestrian safety by regulating the flow of traffic and providing safe times for pedestrians to cross. It can also control vehicle speed as they approach the intersection, thereby reducing the potential for accidents.