In message , NY
writes
GPS (with timestamp and lat/long stamp) and video would seem to be
fine.

If GPS is lazy, what alternative way of establishing location (apart
from video which is a "given" since the thread title is "Dash Cam")
would Martin Brown suggest?

Thanks, everyone. I'd forgotten about the Techmoan site, which is
interesting and useful. It does look as though some cameras do "track
recording", but not a specific lat/long stamp. Not sure this would be
useful in a dispute.

FWIW, I've been involved in, witness to or related to someone in 3
events any one of which could have ended in a dispute or possible
prosecution, but not an actual accident.

In one case a vehicle found itself on a closed motorway because of
faulty, temporarily unmanned, diversion sign and coneage. A second case
was a dispute about a speed camera, where the driver is adamant that the
overtaking police vehicle must have triggered the reading, the third
case being a police vehicle speeding along the hard shoulder, throwing
up grit and debris, damaging paint and windscreen.


--
Bill