7″ Round LED School Bus Warning Light. Features Dual Mode Operation with Fail Safe Auto Flasher built in. Using only Eight of the latest generation High Power LED Diodes, these lamps reach incredible brightness with fewer components than competitors’ models, for fewer failure points and more reliable operation. Custom Optics for High Angular Visibility. Brass reinforced screw bosses and included rear foam gasket make installation or upgrade simple and easy. Exceeds SAE J887, DOT W2, FMVSS 108 & CMVSS Standards for School Bus Warning Lamps.