Final answer:
Drivers are expected to use signals to indicate their intention to pass, which ensures safety and clear communication on the road. Traffic signals also play a key role in controlling vehicle speeds and improving pedestrian safety at busy intersections.
Step-by-step explanation:
Drivers are generally required to signal their intention to pass to ensure road safety and communication with other road users. Indicators serve as a means for drivers to convey their planned actions to others and are crucial in maintaining the smooth flow of traffic. Signaling before passing is a fundamental rule of the road and helps prevent accidents by alerting pedestrians and other drivers to a vehicle's maneuvers, thereby giving them time to react accordingly.
In the context of traffic signs and signals, the introduction of a traffic signal at an intersection with a high incidence of vehicles speeding and pedestrian safety issues, as mentioned, significantly improves the situation. Traffic signals control vehicle flow, reducing speeds, and provide safe crossing opportunities for pedestrians, thus reducing the likelihood of accidents and improving road safety. Consequently, a traffic signal can be a cause-and-effect solution to problems at a busy intersection.