Posted 23 July 2012 - 11:38 PM
The usual fitting would be linked to a g-sensor so it would continually record but save the last 5-10 minutes of footage in the case of an impact.
My work vehicle has a driving style monitor that works on linear and lateral g movement and records sharp acceleration, hard braking and vigorous turns, (which is pretty much every day)
It also has front and rear cameras that as above will record continuously while the engine is running.
I don't know of any legal concerns of fitting cameras as long as you're not in the habit of parking outside schools and playgrounds.
As long as they're used for evidentary reasons in the case of Traffic collisions\accidents i don't see any problems.