Which characteristic is true regarding sequential phases in traffic signals?

Sequential phases in traffic signals refer to the organized series of signal changes that regulate traffic flow at intersections. The defining characteristic of sequential phases is that they happen in a fixed order. This ensures that traffic flows smoothly and predictably, providing structure to the operations of the traffic signal at any given intersection.

By having designated phases, traffic signals can manage different traffic movements systematically, such as allowing vehicles to move in one direction while halting others. This structured approach helps reduce the chances of accidents and improves overall traffic efficiency, as drivers and pedestrians can anticipate what will happen next based on the established sequence.

The fixed order of phases can also facilitate coordination between adjacent or neighboring signals, optimizing traffic flow across multiple intersections. This predictability is crucial for both driver compliance and safety at the intersection. An understanding of sequential phases helps signal technicians in designing and maintaining traffic signals that achieve their intended purpose effectively.