What factor is notable in the design of pedestrian signals?

The use of push-buttons to activate signals is a notable factor in the design of pedestrian signals because it enhances the safety and control that pedestrians have when crossing roads. By allowing pedestrians to actively request a signal change, push-buttons help ensure that the signal only changes when it is safe and necessary for them to cross. This interaction reduces the likelihood of pedestrians attempting to cross at inappropriate times, as they must wait for the signal to indicate it is safe to do so.

Additionally, this system aligns with the principles of pedestrian safety design by giving priority to pedestrian traffic while also regulating vehicle flow efficiently. The adoption of push-buttons can also accommodate varying traffic conditions, enabling pedestrians to cross when needed rather than relying solely on a timed signal.

Other options reflect aspects that may not universally apply to all pedestrian signal designs. For instance, high installation costs might be a concern for some locations, but they do not define the fundamental design of the signals. The notion that signals are placed solely on overpasses is incorrect, as they must also be accessible at ground level to serve pedestrians crossing at intersections. Lastly, while color patterns might differ, standardized colors have been established to ensure consistent meanings across various regions. Thus, the push-button activation feature stands out as a critical design element aimed