How much space is needed for one parallel parked car?

Typically, one parallel-parked car requires a space of approximately 20 to 24 feet (6 to 7.3 meters) in length, depending on the size of the car and the local parking regulations. This space includes room for the car to maneuver into the parking spot and for other vehicles to pass safely. Some cities may have specific regulations for parallel parking spaces, so it's always a good idea to check local parking signs and guidelines to ensure proper parking.