He pulled over immediately and walked back to the cab where he saw flames.
Mr van Pomeren said the driver tried unsuccessfully to douse the flames using a fire extinguisher. The driver had been en route to collect a trailer.
The damaged logs were transferred to another truck and taken away.
Three fire engines from Whangarei and Kamo and an ambulance were sent to the scene.
By the time firefighters arrived the truck was totally engulfed but they prevented about 400 litres of diesel from running into a nearby stream.
Northland Regional Council and the Whangarei District Council were notified and roading contractors estimated damage to the road at $4000.
Jacqui Knight was driving back to Auckland from Kaikohe when she came across the fire. She called out to the driver to check whether he was okay before seeing him jumping out of the truck with a fire extinguisher, coughing and choking.
"I went down to the [Te Horo] school and phoned the ambulance because I thought the fire was out by this time.
"One of the teachers had a first-aid certificate and she went to assist the driver," said the Duffy Books in Homes employee.
A local, Kylie McLean, saw smoke from the farm about 11am and was stopped by police while driving north an hour later.
"There was really black smoke. I couldn't get through. Police said fire hoses and debris from the fire would probably puncture the tyres of my vehicle," she said.
Meanwhile, two Rollover Prevention Safer Journeys seminars in Whangarei to discuss ways logging truck rollovers could be prevented were attended by more than 180 truck drivers, transport operators and forestry owners. They were held on Thursday and yesterday as part of 33 seminars that have been organised by the Road Transport Forum NZ throughout the country.
Logging truck drivers and freight loaders were told about factors that could cause a truck to roll, including the influence of speed, centre of gravity, weight transfer and cornering forces.
Representatives from Unions Northland took the opportunity to launch a living wage campaign by waving banners outside Toll Stadium after the seminar finished yesterday morning. The union feels it is totally unacceptable for Class 5 logging truck drivers to be paid $16.60 an hour and believes the rate should be in the mid $20s.