GPS based vehicle tracking system allows to easily track locations of multiple vehicles in a real time. It consists of a GPS device installed to the vehicle as well as software which collects the data and pictures vehicles’ locations on the screen. Apart from vehicle location GPS device can also send a real time data about vehicle’s condition and specific events which are set in the GPS device. For instance, one of the most commonly tracked events in public transport are doors (open/closed), ignition (on/off), vehicle’s speed.