In this automated world, there will be increase in population, more city development and less space for parking results in parking related problems. In our day-to-day life vehicle became an important resource. To go anyplace we require a vehicle, when we are using vehicle, parking will be the big problem. Due to insufficient parking lots and no knowledge about the parking lots (i.e., do not the parking lots places). To park a vehicle manually we have to wait in line to take the token for parking which is a time-consuming process. There is a need to find a secured, smart, efficient system for finding nearest unoccupied parking lots, to reserve parking lot, guidance to navigate to parking lot, to negotiate parking fee and finally to secure the vehicle in parking places. Smart parking system is introduced by Intelligent Transport Systems (ITS). This article gives an overview on different smart parking services like reserving parking lots, navigating to parking lots, finding nearest parking lots, how to provide security to vehicle. It shows the cons and pros of every smart parking system.