WHEN ARE NCDOT OFFICIALS CALLED TO INVESTIGATE TRACTOR-TRAILER ACCIDENT? My husband was hit not once, but twice by an 18 wheeler attempting to enter the right hand lane. Driver of 18-wheeler hit on driver's side near the rear up to the & including the back door. Once (or I should say the 2nd time) hit, my husband spin out of the right hand lane in front of the tractor trailer. How they missed there, I don't know. As my husband was spinning toward the concrete wall lane divider, another vehicle then hit him on the passenger side on the brake lights. This was actually very foturnate; this kept him from hitting the concrete wall. The driver of the 18 wheeler continued up the road and finally pulled over. Claimed he didn't know he had hit him; he saw a vehicle spinning in the road and decided to pull over. Apparently from what the driver was just leaving out for a pickup or delivery out-of-state. This 18-wheeler is an interstate carrier. Husband said that the driver's eyes were red. A city cop gave insurance information exchange. This was supposedly a noninjury, nontowaway crash. But what caused the driver of the 18-wheeler to come up from behind approaching my husband's vehicle and simply hit him (we know for certain the bumper). Was he too sleepy; running illegal hours of service or have an alcohol or drug issue? What constitutes DOT to come out and do a truck & driver inspection in this instance? Thanks!