The road was expected to remain closed “for some time”, the fire service added.
NET posted on X: “We are unable to serve any stop on Inham Road or Field Lane.
“Buses arriving at Chilwell are normal route to Bramcote Lane, then continue Bramcote Lane, School Lane, left High Road, to resume normal route from Cator Lane.”
Sgt Nicola Thomas, from Nottinghamshire Police, said Inham Road “is likely to remain closed for the rest of the day while investigations and recovery of the vehicles take place”.
“While the incident has caused disruption this morning, there have been no reports of any serious injuries and the scene is now being made safe,” she added.
“Motorists are advised to avoid the area and find alternative routes.”