Traffic Light Hack Using RTL-SDR
REVERSE ENGINEERING WIRELESS MOBILE TRAFFIC LIGHTS WITH AN RTL-SDR
![Wireless traffic lights reverse engineered with an RTL-SDR](https://www.rtl-sdr.com/wp-content/uploads/2015/09/wireless_traffic_light-375x500.jpg)
When roadworks suddenly appeared on Bastian Bloessl’s girlfriends street the workers put up a set of automated wireless traffic lights to control the flow of traffic during the works. Seeing these lights, Bastian quickly grabbed his RTL-SDR dongle and got to work on reverse engineering the status telemetry signals transmitted by these lights.
It seems that the telemetry is unencrypted, however we would assume that the control signals are encrypted.