It's known as a Preemption device. It's integrated into the lightbar electronics and mounted inside the lightbar frame. It sends out an electronic signal to the traffic light. It's illegal for anyone other than piolice, fire or EMS to own or operate.
Not just 14Hz. They support 10, 12, and 14Hz, usually one frequency each for police, medical, and fire vehicles. They can do more than this though, encoding vehicle IDs in the strobe and more. See the documentation for Opticom's "model 792 emitter" for the complete specs.
Wait wait this been known for years, why they act like they never heard it? Hmmm most ambulance and firetruck have those and they can call traffic lights control to fix the lights . This been going on for years! Lol yall behide its ok
You can usually get old reserve/scrap fire engines though the lights and sirens can’t be used on the road if it’s not used for responding to emergencies or if you are on private road, though in most states/countries you can keep or install lights and sirens as long as they aren’t illegally used on public roads.
I suppose if you can get a permit to operate lights and sirens yes otherwise you’ll go to jail for 15 years. Get a permit for running them before you run them.
really? that seems a bit counter-productive, as it would mean vehicles stopping right in your path, instead of trying to get through the green light before pulling over
