Municipalities are required to maintain traffic control devices to meet specific regulatory standards for visibility, position, and condition. These standards are often set by national bodies such as the Department of Transportation in the United States. Failure to maintain these standards can result in liability for accidents that occur due to poorly maintained or positioned traffic control devices.
For example: If faded crosswalk lines lead to a pedestrian being hit because drivers cannot see the crosswalk well enough, the municipality could be held liable for not maintaining the lines to adequate visibility levels.