| Vehicle Traveling Data Recorder (VTDR) is a digital electronic device, which can record vehicle speed, real time, mileage and vehicle's other status information. VTDR is important to hold back traffic peccancies such as tired-driving, overspeed, and it is also important for authenticating and analyzing traffic accident. A whole VTDR system includes two parts, one is the vehicle-carrying terminal and the other is the managing and analyzing software.This thesis mainly describes hardware and software designing of VTDR based on GPS. VTDR developing background is introduced in the first chapter. Then domestic and overseas developing actualities are summarized, and based on the summarization the aim of VTDR developing is set forth, which also refers to the national standard and the actual demands of petrol transportation and geological prospecting profession. In the following part, the thesis discusses the designing conception of the whole system and different plans of each functional module. At last, the final designing plan is described in detail. |