Dave’s SpeedCam (DSC) turns any video camera and tripod into a roadside speed camera. All you do is point your camera across the road, take a few measurements and leave it recording. DSC will then analyze your recordings and calculate the speed of each vehicle. A detailed snapshot of each vehicle is recorded together with the speed information overlain.
DSC also produces spreadsheet results and a bar graph showing the vehicle speed distribution like below.
DSC is currently in development and still has a few wrinkles to be ironed out. However, you can download a trial version here.