Which item is typically found in a traffic signal plan sheet?

A phase layout diagram is an essential component of a traffic signal plan sheet as it provides a visual representation of the signal control phases for intersections. This diagram outlines how the traffic lights will change in sequence and highlights the timing for each phase, ensuring that vehicles and pedestrians receive clear instructions regarding when to stop and go.

Including the phase layout in a traffic signal plan is crucial for traffic engineers and planners because it helps coordinate the flow of traffic, manage congestion, and enhance safety for all road users. The phase layout diagram is used as a practical reference during installation and maintenance of the signal system, allowing for effective communication about how the traffic signals will operate under various conditions.

The other items mentioned in the answer choices serve different purposes. Pedestrian crossing instructions provide information but are more focused on pedestrian safety rather than the operational phases of the signal. A signal maintenance schedule pertains to the upkeep of the traffic signal equipment, while a traffic accident report captures incident data but is not a part of the planning or design documents for traffic signals.