A speed measurement system for measuring speeds of vehicles, capturing images
of
vehicles, and detecting violation of stop sign and traffic signal laws. The system
includes a laser speed detector for determining a speed of a vehicle adjacent a
stop sign. When a speed is determined, the detector generates a speed signal. The
system includes a camera generally aligned with the speed detector operable to
capture and store digital still images of vehicles in memory. The camera is programmed
to respond to an image capture signal to generate and transmit a digital image
file including a still image of the vehicle targeted by the detector. A portable
processor is linked to the speed detector and the camera to first receive the speed
signal, to compare the detected speed with a threshold speed, to transmit an image
capture signal to the camera, and to receive the image file from the camera.