Which feature allows for pedestrian phases in traffic signal controllers?

Answer: C — Pedestrian recall

The feature that enables pedestrian phases in traffic signal controllers is pedestrian recall. This functionality specifically incorporates actions that allow pedestrian crossings to be prioritized, ensuring that pedestrians have a dedicated signal phase to safely cross the intersection. When pedestrian recall is activated, it ensures that the traffic signal cycles include a phase for pedestrians regardless of vehicular demand. This is particularly important in areas with high foot traffic or where safety is a significant concern, as it allows pedestrians to cross without needing to press a button or otherwise signal their presence. In contrast, maximum recall and minimum recall relate to the management of vehicle phases within the signal cycle and do not directly apply to pedestrian phases. Soft recall is a concept used in traffic signal operations, but it generally pertains to vehicle phases rather than explicitly allowing for pedestrian phases. Therefore, pedestrian recall is the correct feature that specifically facilitates the inclusion of pedestrian phases in the operation of traffic signal controllers, enhancing safety and accessibility for those on foot.