OFFROADTOWN Fog Lights 3'' SAE Yellow LED Pods DOT Approved Driving lights Cut-off Beam Amber Square LED Cubes Work Light for Truck Pickup SUV Car Jeep Motorcycle

SAE J583 is the official designation of the fog beam pattern, it specifies a very wide beam with a flat horizontal cut off allowing no light above the cut off horizon. This is critical in a fog application for multiple reasons, the first being the purpose of the fog light is to put the light beam low and wide so that the driver can find the edges of the road at low speed without causing the beam to break the horizon and reflect light back at the driver in rain/fog/snow/dust, which reduces visibility in the conditions that the fog is primarily designed for. The clean cut off also allows this beam to be run in oncoming traffic without blinding oncoming drivers, unlike any other pod beam pattern.