In this case, a gasoline tanker shuts down the NY Thruway when it catches fire under an overpass.

It is late evening and traffic is light on the surface road. A car is coming, but the tanker driver decides to pull out from a tight turn. Several seconds later, the car rams the side of the tanker, breaking fuel lines, and starting a major fire that destroys the overpass.

The NTSB arrives on the scene and takes over the data collection process. They issue a report clearing the truck driver of all wrongdoing. However, they place the tanker at rest much further down the road than data taken by the local police before they were dismissed. This put the tanker on the road for a much longer time. It gave the car driver a longer time to recognize danger.

Several years after the accident, we use photogrammetry to determine where the tanker came to rest. We corroborated the police data. In addition, our analysis showed that the end of the tanker came to rest near a manhole. This proved the location as the police officer's map showed a circle at the rear of the tanker right where our analysis determined the manhole should be.

The tanker traveled far less distance than the NTSB determined. This shifted much of the blame from the car driver to the tanker driver.