Abel Tech are introducing a tail light with a big difference-it comes complete with a detector system that can detect an warn riders of a vehicle approaching from the rear. The system uses microwave that detect approaching vehicles within a 100 degree arc. When activated, flashing LED lights and a buzzer alarm are triggered to alert both the approaching driver and the rider. Constructed in a robust aluminum rainproof housing, the system features a 1600mAh rechargeable battery.