Final answer:
When turning left on a stale green light with oncoming traffic nearby, a driver must yield until it is safe to turn. A traffic signal is crucial for regulating vehicle movements and ensuring pedestrian safety at intersections.
Step-by-step explanation:
Before turning left on a stale green light with oncoming traffic 1/2 block away, it is important to proceed with caution. In general traffic rules, one must yield to oncoming traffic until it is safe to complete the turn. This involves assessing the speed and distance of the approaching vehicles. A stale green light suggests that it may turn yellow or red soon, so one should be prepared to stop if necessary. A cautious driver would only proceed with the left turn when they are sure the oncoming traffic is at a safe distance to allow for the maneuver without causing any disruptions or risking an accident.
Regarding traffic signals and safety, a traffic signal not only helps to regulate vehicle movements but also enhances pedestrian safety. At an intersection, a traffic signal would provide a controlled environment for all users, which includes vehicles slowing down for the signal and allowing pedestrians to cross safely at designated times.