Final answer:
You should wait in the center of the intersection for traffic to clear when wanting to turn left with a green light and heavy oncoming traffic. Traffic signals contribute to road safety, manage vehicle speeds, and prevent accidents, particularly in heavy traffic areas.
Step-by-step explanation:
If you want to turn left at an intersection, the light is green but oncoming traffic is heavy, you should wait in the center of the intersection for traffic to clear. This means must patiently wait for a safe gap in oncoming traffic before completing your turn. It is important not to take the right-of-way assuming you have the light in your favor, as this can lead to accidents. The traffic signal is there to manage the flow of vehicles and no one should speed through an intersection disregarding other road users and the posted speed limit. Furthermore, installing traffic signals can greatly improve pedestrian safety as it allows them to cross at more appropriate times, reducing the need to dodge traffic. Lastly, traffic signals play a crucial role in areas with heavy traffic and high accident rates, as they can help reduce the number of accidents which in some cases, have unfortunately resulted in loss of life.