noun, noun or participle which takes 'suru', noun which may take the genitive case particle 'no'
illegal parking
Refers to parking a vehicle in violation of traffic laws or regulations. Can be used as a noun, with する to mean 'to park illegally', or as a modifier with の.
この通りは違法駐車が多い。
There is a lot of illegal parking on this street.
駅前に違法駐車しないでください。
Please do not park illegally in front of the station.
違法駐車の取り締まりが強化された。
Crackdowns on illegal parking have been strengthened.