VIDEO: Tuesday's train derailment in Collegedale closed roads and created challenges for cleanup crews and motorists. Ten train cars and three locomotives derailed when the train crashed into a truck carrying a concrete beam. It caused a massive diesel spill at the crossing on College Drive East and Apison Pike. Two people who were injured in the crash are out of the hospital. The area looks a lot different than it did just 24 hours ago. The wreckage has been moved out of the way, new tracks have been laid and Norfolk Southern trains are running again at reduced speeds. When the Norfolk Southern train collided with a concrete beam Tuesday afternoon, it caused the locomotive and 10 boxcars to derail spilling gallons of diesel. Hamilton County Hazardous Materials Officer C.J. Davis said there was about 3700 gallons of diesel in the locomotives.