What is the purpose of a signal operation manual?

A signal operation manual serves a vital role in traffic management by outlining the functioning and maintenance procedures for traffic signals. It provides essential information on the proper operation of the signal equipment, troubleshooting measures for common issues, and detailed maintenance practices to ensure the signals operate effectively and safely. By having a structured manual, technicians can maintain consistency in handling signal operations, fostering reliability and safety in traffic flow. This resource is crucial for ensuring that traffic signals perform as intended, thereby contributing to the overall efficiency of the traffic management system.

The other options, while potentially relevant in their own contexts, do not align with the primary purpose of a signal operation manual. Guidelines for vehicle repairs or recording accident statistics fall outside the scope of signal operations, and policy documents for city council pertain more to governance than to the technical aspects of signal management.