Speed cameras use radar, laser-powered lidar, and multi-camera average-speed setups to get the correct speed and determine if you're breaking the law.
You see the yellow box, you check the speedometer an then, two weeks later, a ticket lands on your doormat. How? You barely had time to register the camera. Here's the thing — it didn't need much time at all. Speed cameras measure your velocity with ... [4493 chars]