Parking Lot Systems: These are the barriers that allow the vehicles to pass at the entrances of the parking lot by purchasing their tickets from the ticket machine. When the vehicle coming to the parking lot arrives in front of the ticket machine, it is detected by the loop detector. ticketing comes into play. Barrier located in front of the ticket issuing machine after the ticket is purchased, either by button or automatically, , Arm Barrier is generally used. After buying the ticket, the barrier opens. After the vehicle has passed, the barrier should be closed again thanks to a loop circuit. Otherwise, the vehicle coming from behind can pass through the barrier without buying a ticket. Barriers with arms are used at the exits of the car park, and they are frequently used in closing barriers.