With lockers still engaged, log truck leaves roadway and tumbles down steep bank

Safety Alert Type: 
Log Hauling
Adams Lake (north of Chase, BC)
Date of Incident / Close Call: 
Company Name: 
Interfor - Adams Lake Division
Details of Incident / Close Call: 

A loaded short log truck (B train) was driving down a logging road with the second load of the day. The truck had just recently pulled a short adverse (uphill section) and as a result the driver had engaged his lockers.

After the adverse section, the truck continued down the road and came to a sharp corner. When the driver attempted to steer around the corner, the truck did not respond because his lockers were still engaged. He ended up driving off the road and over a steep 30-40ft bank.

The truck was stopped by a large spruce tree and some small cedars (see photo in attached pdf). The driver ended up being pinned in the truck for over 4 hours while rescue workers attempted to extract him. The driver suffered a broken arm.

The road had been previously graded (within 6 hours of the incident) but the visibility was poor. It was very foggy with wet snow coming down. The temperature was about -5 degrees. The truck had two sets of chains on the drivers but none on the steering tires.

The lockers, while they greatly improved the traction for the adverse section of road, ended up inhibiting the trucks ability to steer.

Learnings and Suggestions: 
  • Use extra caution during adverse weather conditions
  • Always remember to disengage lockers when no longer required for improved traction purposes
  • Compare chain requirements on every trip with other drivers who have previously travelled the road


For more information on this submitted alert: 

For more information contact: Erik Kok, RPF, Interfor – Adams Lake Division 250-679-6842

File attachments
With lockers still engaged, log truck leaves roadway and tumbles down steep bank.pdf
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