The ElectroChev was designed and developed in South Africa. It's purpose is to enhance visibility of any truck horse/trailer in order to decrease the number of accidents on our roads. The ElectroChev will automatically light up when night falls due to the day/night switch, it also has a vibration sensor which will switch the ElectroChev off when the truck is stationery in order to save battery life. We also have the option for a tracking system. Contact us for further details and a demo. See out YouTube video at YouTube