What is a good five-step procedure for troubleshooting?

The selection of the second option is appropriate because it outlines a systematic approach to troubleshooting that is essential for effective problem resolution in traffic signal systems.

The first step, "observe," emphasizes the importance of examining the situation thoroughly before jumping to conclusions or making any changes. This allows for a clear understanding of the problem at hand. The second step, "identify," focuses on recognizing and diagnosing the specific issue that needs addressing based on the observations made earlier.

Following identification is "determine," which involves analyzing the cause of the problem and determining the best course of action to take. After determining the solution, the next step is "correct," where the appropriate fixes or adjustments are made to resolve the issue. Finally, the last step, "observe again," reinforces the importance of monitoring the system after corrections have been made to ensure that the problem has been effectively resolved and that no new issues have arisen as a result of the changes.

This approach not only emphasizes thoroughness and carefulness but also ensures that technicians do not overlook any crucial aspects of the troubleshooting process, which is vital for maintaining effective traffic signal operations.