What should drivers do if they see one or two arms raised horizontally?

When drivers see one or two arms raised horizontally, they should recognize this as a signal for traffic regulation, typically used by traffic officers or signs indicating to stop. In this case, the correct action is for traffic facing both the front and back to stop, ensuring that they yield to pedestrians, emergency vehicles, or any specific situation that requires a halt in movement.

This regulation is crucial for maintaining safety on the roads, as it allows for the controlled passage of vulnerable road users, such as pedestrians, or provides necessary clearance for emergency services that may be responding to an incident. Understanding and complying with such signals is integral to safe driving practices, as it creates an organized flow of traffic and enhances overall road safety.