Final answer:
A green lighted arrow on a traffic light means you may proceed in the direction of the arrow without stopping. It is used to safely regulate vehicle turns and traffic flow, improving safety for both drivers and pedestrians.
Step-by-step explanation:
A green lighted arrow on a traffic light, also known as a protected turn arrow, means that you may proceed in the direction of the arrow without stopping, assuming it is safe to do so. This indication is designed to provide a clear opportunity for drivers to make a turn safely, as oncoming traffic is generally stopped by a red light. Therefore, it's crucial for drivers to follow traffic signals for both safety and legal compliance.
When a traffic signal is installed at an intersection that previously did not have one, it can greatly reduce the tendency for vehicles to speed through without regard to the posted speed limit. The traffic signal effectively regulates traffic flow and allows pedestrians to cross at appropriate times, enhancing safety for all road users. In emergency situations, exceptions may apply, but generally, adhering to traffic signals is mandatory.