I've known comments from other places about cycle paths not being maintained properly. That excuses are made that the paths are too narrow for vehicles which sweep up, clean them or to grit them.
These two photos show two different types of cycle path. The first is a main cycle route for high speeds (I featured it previously, with video), while the second is a path past housing (motor vehicle access to these houses is at the rear). In the first case you'll see a council maintenance vehicle parked. Due to the cycle path being of the usual width for this part of the world it is much wider than the vehicle, so no problem with access. In the second photo you can see the characteristic lines in dust left by a road sweeping vehicle a few minutes previously.
Both cycle paths are about four metres wide, and both have lighting at night. A well maintained path with lighting is what is needed for a good level of social safety.