Strawburger wrote:I can't see someone operating a stopwatch holding up in court!
Have you ever seen the "Police aerial speed patrol" signs on freeways in NSW? Have you ever noticed that for about 5km after those signs there are white lines painted across the lanes exactly every 500m? The cops fly overhead and time how long it takes from one line to the next, they can then easily calculate your speed and get the cops on the ground to pull you over and book you (not sure if they are allowed to just send you the ticket in the mail, considering all the extra signage required around speed cameras in NSW).
Basically, if you have a measured distance (with certified accuracy), and a stopwatch (again, would have to be certified as calibrated), then you can easily prove the average speed to a court.
The flip side of this is, if you accurately measure these and provide enough evidence to the cops (eg calibration certificates, video proof showing car and stopwatch) then theoretically it should be possible for the cops to fine them based solely on your evidence.