Crews were called to three different vehicle fires on the Trans-Canada Highway in eastern Newfoundland on Sunday, in incidents that caused delays for weekend drivers.

The first fire broke out near Makinsons about 11:30 a.m. on Sunday.

A travel trailer attached to the back of a truck spewed heavy smoke, as RCMP shut down eastbound traffic to help crews put it out. Westbound traffic was also temporarily reduced to one lane.

RCMP Const. Mark Bishop, who was called to that blaze, said the driver noticed the trailer was on fire when he looked in his mirror.

Jackie Bryant Cumby camper fire TCH

A camper RV attached to the back of a truck caught fire Sunday afternoon near Makinsons. (Jackie Bryant Cumby/Twitter)

Bishop said a mechanical problem caused the fire.

"Likely, the brakes malfunctioned, but they're not 100 per cent sure," he said.

The trailer also had two propane tanks attached at the front, but the driver was able to take off the tanks and disconnect the trailer from the truck before the fire spread.

About two hours later, a transport truck caught fire on the Trans-Canada, this time just two kilometres west of Clarenville.

Police stopped traffic in both directions for a while due to the heavy smoke.

Then around 7 p.m., a third vehicle — also a camper — caught on fire near the Bellevue-Fairhaven turnoff.

Bishop said a mechanical problem was probably the cause of that fire too.

"The fire destroyed the RV," he said Bishop.

"The flames spread very quickly because it was an enclosed space, it was made out of wood, and when you're camping, you have a lot of flammables and camping fuel."

RCMP said no injuries were reported in the three incidents.

Bishop recommends that the public should ensure their RVs are in good condition and serviced regularly.