People say they did not know free parking times were reduced during football matches nearby.Read more
Drivers parking illegally on double yellow lines outside a school in Canterbury are not being fined because autumn leaves are obscuring the road markings.
Stuart Pyewell, head teacher of St Stephen's Junior School, in Hales Drive, told BBC Radio Kent, parking near the school entrance was a regular problem, especially in wet weather.
A spokesman for Canterbury City Council said: "We cannot enforce parking restrictions when the lines are not visible.
"A penalty charge notice issued in these circumstances would be challengeable and we would be in danger of losing at appeal."
He added that parents who illegally parked should be doing "the responsible thing rather than falling back on technicalities such as there being leaves on the lines in order to flout the rules".
Ethiopia's traffic management agency is using smart parking garages to ease congestion.