駐車場 and 駐輪場: parking a car and leaving a bicycle
Compare a car park with a bicycle parking area, keeping one facility’s bicycle-only notice separate from rules for every facility.
A place for parking cars
駐車場, read ちゅうしゃじょう, means car park or parking lot. 車を駐車場に止めました。 says that someone parked the car in the parking area.
駐車場の入口は建物の裏にあります。 says that the parking-area entrance is behind the building. Entrance location differs from the number of available spaces.
A place for parking bicycles and similar vehicles
駐輪場, read ちゅうりんじょう, names a parking area for bicycles and similar vehicles. 自転車を駐輪場に置きました。 says that someone left the bicycle there.
駐輪場の場所を受付で聞きました。 says that someone asked at reception where the bicycle parking area is. It does not state that the bicycle was already parked.
A facility’s permitted vehicles
この駐輪場は自転車専用です。 says that this parking area is for bicycles only. この identifies the facility with that restriction; it does not assign the notice to every such area.
駐車場という名前だけで、自転車を置けるかは分かりません。 says that the name parking lot alone does not establish whether a bicycle may be left there. The facility’s notice supplies its actual permitted use.
Does この駐輪場は自転車専用です。 state that every 駐輪場 is for bicycles only?
Show the answer and why
No. It specifies bicycle-only use for this facility identified by この. It does not determine the permitted vehicles at other facilities.

