The Urban Transportation Monitor

Survey consists of responses from 74 traffic engineers concerning traffic signal maintenance and related issues. Topics/questions include:

What percentage of your signalized intersections are maintained by your own agency?
What percentage of your signals contain LED lighting?
Who does the maintenance of signal controllers and signal heads for your agency?
Who does the maintenance of signal detectors for your agency?
What resources are expended by your agency, annually, to maintain traffic signals in your jurisdiction?
What is the average age of your traffic signal controller and cabinet?
How often does your agency perform routine maintenance on each signal?
What items are included in the routine maintenance of your traffic signals?
What problems does your maintenance staff spend the most time on other than routine maintenance?
What are the most frequent problems that your maintenance staff have to correct?
What other duties does your signal maintenance staff perform?
What is your agency’s required response time to restore a flashing signal to full operations on week days?
What is your agency’s required response time to restore a flashing signal to full operation on weekends?
What do you believe are the best ways to reduce the costs and time associated with traffic signal maintenance?
Does your agency have a computerized signal surveillance system with a central control room?
What kind of communications does your signal surveillance system use?
What was the total cost of your most recent installation of traffic signals at an intersection?
Approximately what percentage of this cost was taken up by civil work?

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