Hacking the Green Wave: Reversing EVP Signals
Hackaday details a reverse-engineering project showing that older optical Emergency Vehicle Preemption (EVP) systems can be spoofed. By analyzing Tomar Strobecom and Opticom hardware, the researcher demonstrated that infrared preemption signals can be replicated and, in some cases, a valid vehicle ID can be transmitted with an Arduino-based transmitter, highlighting potential security risks and stressing the legal and safety implications of attempting such exploits.