What is the purpose of traffic signal inspection?

The purpose of traffic signal inspection encompasses a variety of important functions aimed at ensuring the safety and effectiveness of traffic management systems. One key aspect is to provide a record of construction, which is crucial for accountability and future reference. This documentation helps track the installation process and any changes made during construction.

Additionally, inspections verify that the installation meets all required specifications and regulatory standards. This is vital for ensuring that traffic signals operate correctly and efficiently, thereby enhancing road safety. Compliance with these standards helps to prevent issues that could arise from improper installation or faulty equipment.

Documenting the results of tests is another important role of traffic signal inspection. This process involves assessing the functionality of various signal components and their interactions, allowing for the identification of any deficiencies or the need for maintenance.

Combining all these elements, the inspection serves a comprehensive purpose that includes recording construction details, confirming installation compliance, and documenting testing outcomes. Hence, recognizing that all these factors contribute to the effectiveness and safety of traffic signals makes the selection of "all of the above" the most comprehensive and accurate response.