At 1:57 a.m. Tuesday morning, Anaheim FD repsonded to a reported traffic collision on the westbound 91 Fwy near the Weir Canyon Rd exit. A Jetta rear ended a box truck and caught fire. No parties reported serious injuries in the crash, and the fire was quickly extinguished. It is unknown at this time whether speed or alcohol were a factor in the crash. Anaheim PD will be handling the investigation.