Design and implementation of mobile traffic warning triangle

In this paper, we design a new mobile traffic warning triangle (MTWT) which consist five parts: distance measurement unit, reflective tracking function, LED indicate, emergency calling and embedded controller. The MTWT can track the white line in road side then move a fix distance and rise the LED indicate triangle. It also can detect the distance between two cars and alarm the driver. The GPS module let system understand its current location that makes it easy to calculate the movement orientation and to inform the relevant departments. The driver can call back the MTWT just use application software in the smartphone when system finish the notification.