The Adjacent Vehicle Coordination System on the Expressway

The adjacent vehicle coordination monitoring system on the expressway is to calculate the relative position and display it. So the driver can observe the behavior of adjacent vehicles more easily and then to predict their next behavior. The technology of this system is based on the energy-efficient equipment-DSP which is used to control the peripheral devices. GPS is used to locate. ZigBee will send the latitude and longitude value to each vehicle in the queue. The system will use the latitude and longitude value to calculate the relative location between the vehicle and the vehicle, and display the value on the LCD screen. So the driver can observe each other and avoid these situations such as overspeed or emergency stop. After the test of each node's hardware and software design the main functions have been proved through the experiments.