Safe Speed Forums

Usually, the operator will pull the trigger on the equipment to commence a speed reading - which should be after he has formed an opinion that the vehicle is speeding…… (hence it is manually triggered).
The equipment will be continuously recording whatever the camera is pointed at. When a speed measurement is triggered, the speed gun will communicate the resultant data to the recording equipment such that it is inserted into the video image and recorded onto the video tape (hence once manually triggered, the recording of the speed reading is done automatically).

So am I right in thinking if the person is not in the back of the van or not watching to check your speeding you may not have been caught

Assuming their is only one person manning the site and he is outside the van then you cannot have been recorded speeding.

they sit nice and dry in a warm van looking at the traffic, a video is recording any vehicles they think are over the limit the pull the trigger on an imprint is then logged on the video if they are over a predetermined set limit, in nicer weather they sometimes work outside the van with a longer lead