http://digbig.com/4ejfp
"Hi-tech site-survey equipment to speed up police investigations at the scene of serious road incidents and re-open lanes more quickly is being tested in the West Midlands. It often takes more than six hours to clear a serious road incident. Once any casualties have been removed, the police must gather evidence for their investigation. Only when the police have finished can the Highways Agency repair any damage to the road network before the route can safely re-open. Accident investigation equipment to be tested includes a laser scanner, a digital photogrammetry system, and combined total station and digital photography system."
