are crushed gravel mounds, graded into an even incline at the bottom of a hill. they're designed to slow down and stop trucks if their brakes fail or if the driver loses control. carbon county officials worry this ramp is causing more accidents than it's preventing. >> two other trucks had come up and crashed on this runaway truck ramp and the drivers have been injured. >> rob's assignment, get some shots of the ramp for the 5:00 newscast. >> the first thing i did was pull onto the ramp. >> rob then sets up his camera. >> i pushed record and i let it roll. we had to let the camera roll for like ten seconds to get enough. i was only there maybe two minutes, at the most. >> suddenly, behind him comes a sound like a jet engine. unable to brake, a truck has careened off the highway. >> i just looked behind me and i saw the truck veering towards the ramp. >> veering down on the gravel dunes just as rob is recording. >> oh, boy, i'm going to get a