Final answer:
You should wait at an intersection until it is clear to proceed, which means there is not a fixed number of seconds to wait. Traffic conditions and pedestrian safety must be considered before moving through the intersection.
Step-by-step explanation:
When determining how long you should wait at an intersection after the vehicle ahead of you starts moving, the correct answer is (c) Until the intersection is clear. There is no specific number of seconds required to wait, such as 5 seconds or 10 seconds. Each scenario at an intersection is different, and therefore it is essential to proceed only when it is safe to do so.
The primary focus at intersections should be safety. Traffic signals are in place to regulate traffic flow and ensure the safety of both vehicles and pedestrians. A driver should always make sure the intersection is clear of oncoming traffic, pedestrians, and any potential hazards before moving forward, regardless of whether the front vehicle has started moving or depending on the traffic signal.
In the context of pedestrian safety, it is essential to understand that the primary function of a traffic signal is to help pedestrians cross at appropriate times without having to dodge traffic. Hence, all drivers need to be aware of their surroundings and wait for the intersection to clear before proceeding.