What should you do if you have already started through an intersection when the signal light changes?

When you find yourself already in an intersection and the traffic signal changes, the safest and most appropriate action is to follow through and proceed to clear the intersection. This is because stopping suddenly in the intersection could create a hazardous situation, not only for you but also for other road users who may not anticipate your abrupt stop, potentially leading to collisions.

Continuing through the intersection ensures that you can exit safely, rather than risking a rear-end collision or getting stuck in a position that is difficult for others to navigate. The essence of traffic signal regulations is to promote safety and flow, so when in motion and already committed to crossing, the priority is to continue moving in order to avoid congestion and maintain safety for all.