Practice question

Which is the most common emergency-vehicle preemption (EVP) detection technology in U.S. agencies today?

  1. Optical (infrared) emitter-receiver pairs such as Opticom / GTT systems
  2. Microwave Doppler radar for vehicle classification
  3. Cellular SMS triggers
  4. Inductive loop calls only

Answer: A — Optical (infrared) emitter-receiver pairs such as Opticom / GTT systems

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