What is one challenge of maintaining older traffic signals?

Finding replacement parts and ensuring compatibility is indeed a significant challenge when maintaining older traffic signals. As technology advances, manufacturers may discontinue older models or parts, making it increasingly difficult to source the necessary components for repairs. This challenge is compounded by the fact that older equipment may not be compatible with newer technology. As systems evolve to be more integrated and efficient, older traffic signals may lack the infrastructure to integrate seamlessly with current systems, requiring additional modifications or complete replacements. Moreover, the longer the signal has been in operation, the more wear and tear it may have experienced, further complicating the search for appropriate and effective restoration or replacement solutions. Therefore, ensuring that the older signals can still function effectively alongside newer technology is a vital and complex task for maintenance personnel.