Collision avoidance sensors provide analog proximity measurements for various collision occurring hazards. Collision avoidance sensors are used to prevent collision of automatic guided vehicles with either to some other vehicle or person moving on the road. A proximity sensor is mounted either in the front or at the back of automatic guided vehicles. Collision avoidance sensors start working as soon as the vehicle engine is started and the vehicle starts moving. An anti collision sensor works on ultrasound technology. An ultrasound anti collision sensor mounted on the vehicle continuously sends and receives sound wave signals from and to the moving object. The sound waves are sent to detect any colliding object appearing on the way of the moving object. As soon as a colliding object is detected in the range of 8 feet, the driver is warned with an alert sound and the driver can take the appropriate action. There are many different types of collision avoidance sensors. Examples include a parking sensor and a radar proximity sensor. A parking sensor is used in automobiles for safely parking the vehicles in the smallest possible space. A parking sensor can also easily detect objects that are out of vision range. A radar proximity sensor is a speed sensor that is used to measure the speed of the vehicle. Other collision avoidance sensors are commonly available.