Which of the following describes the characteristics of traffic signals?

Traffic signals are essential components in traffic management, designed to control the flow of vehicles and ensure safety on the roads. Among their characteristics, one of the most notable is the use of red, yellow, and green lights, which designate different actions for drivers.

The red light indicates that vehicles must stop, the green light means that it's safe to go, and the yellow light signals caution, indicating that the light is about to change to red. In addition, traffic signals can be positioned both vertically and horizontally, providing flexibility in their installation based on visibility and local traffic regulations.

This comprehensive understanding of traffic signals not only enhances driver awareness but also promotes a safer driving environment by clearly communicating commands to road users. Therefore, acknowledging that traffic signals consist of these three colors and can be oriented in different ways encapsulates their functionality and purpose on the road.