Log Hauler trucks carry large loads that are both heavy and high. They have to move around in difficult terrain with gradients. Drivers operating these big rigs require special skill and training. Over-height forestry trucks can cause personal injury, torn down power lines, damage traffic signals, damage overpasses and bridges and damage equipment being hauled. Several precautions should be taken to prevent accidents caused by over-height trucks

• When planning the route beware of the low bridges along the route and possible detours if the load height exceeds the posted limits.
• Outside logs should not be loaded over the standards on a log trailer. Crowning of interior logs is permissible as long as the total height does not exceed a legal highway maximum of 13 feet 6 inches.
• Measure the height of standards on new trailers and on repaired trailers to be sure an over-height situation does not exist.
• Always use binding chains, straps, or cables with the proper strength requirements for the load. Follow the safety procedures when securing the load.
• Carefully check the load for shifted logs before unbinding.
• Measure the height of the total load after equipment is properly secured for travel.
• Don't assume all lowboy deck heights are the same. This will influence total load height.
• Over-height loads may have a higher center of gravity, affecting how loads are positioned and affecting truck handling. Dropping a wheel off the pavement could result in a roll-over accident.
• Secure and bind all equipment, including booms and grapples.
• Obtain over-height permits from appropriate state highway agencies and insure that the assigned route is a safe route. Determine low bridge locations on your own as a check.
• Use escort vehicles if required by the state agency.
• Be aware of low obstructions once the hauler leaves the public road system. Power lines and phone lines to temporary structures such as hunting camps, farm buildings, etc. may be too low to pass under.