A Cellphone Lot is a parking lot, typically located at airports, where people can wait before picking up passengers. The purpose of these lots is to reduce congestion at arrival sections by preventing cars from continuously circling around the airport or wait on the side of highways to avoid paying fees at the airport parking lots. Once the passenger's flight lands, collects his/her luggage and ready to be picked up, calls the person waiting in the cellphone lot. These lots are usually free and only minutes away from the terminals.
United States
Many airports in the United States have cell phone lots.
References
Cellphone lot Wikipedia(Text) CC BY-SA