I know I can film stuff in relation to water and use it as evidence....then again I have certain delegations and powers under the act so maybe that is one of them.
That said I am sure we have used video from a public member as evidence too (I know it is a water issue not cars but evidence to non enitable crimes is still crimes???)...it didn't carry much weight but, as all the notes and stuff that have to accompany the video were not done properly, So I think if they are trained in gathering evidence properly it could be used and be effective in court
That said it would be pretty easy to spot the guy with the video camera, with his note book and GPS ha ha