Signals and Telecommunication Journal Ousmane Abdoulaye Oumar, M. A.Al Rashed, Damanjit Singh 3 1 2014 http://www.dline.info/stj/fulltext/v3n1/3.pdf A GPS based tracking system is proposed which keeps track of the location and speed of a vehicle which can be monitored by a mobile phone text messaging system. The system is able to provide real-time text alerts for speed and current location of a vehicle. Particularly, the present location can be locked and the system will alert the owner by sending a text message if the vehicle is moved from the present locked location. In addition, the speed can be locked and an alert can be sent to owner’s mobile phone if this speed is exceeded.