TARGET BLU EYE: AN EYE FOR SAFETY WARNS YOU OF APPROACHING EMERGENCY SERVICES SUCH AS MARKED AND UNMARKED POLICE CARS, AMBULANCES AND FIRE ENGINES Target Blu Eye is a unique and worldwide patented traffic safety system that warns you in advance of approaching emergency service vehicles. In the UK all the emergency services use Tetra radios and Target Blu Eye will let you know when they are close come day or night. So whilst driving at night, even if the emergency vehicle is not using their lights or sirens, Target Blue will alert you of their presence up to a kilometre radius.