IMONIC Anti-Collision Car Laser Fog Lamp Bright Red LED Laser Rear Tail Indicator Fog DIY Lights Trailer Car Truck Nowadays, foggy days last longer as environmental pollution and hazy areas are getting wider.On rainy or foggy days, the limited visual range can easily result in traffic accidents.But the newly-madelaser fog light can solve such problem. It works by installing a red laser emitter at the back of car, which can generate a red fan-shaped beamin the air when bad days.