Optimizing Log Truck Transportation: Analyzing Route Safety and Transportation Efficiency

Abstract

This study assessed the feasibility of rerouting log trucks away from state and county roads to interstate highways with modest increase in Gross Vehicle Weight (GVW) limit of 88,000 lbs. which is the current GVW for state and county roadways in Alabama. Interstate GVW is limited to 80,000 lbs. Optimal log truck routes were simulated using ArcGIS Pro Closest Facility network analysis method. Findings suggest that rerouting log trucks to interstates would reduce their interactions with road intersections and traffic stops by 52.9% and 36.6% as well as a 48% reduction in rural primary miles traveled; a road segment associated with a higher proportion of fatal log truck crashes. Furthermore, interstate travel reduces one-way travel time by 14%, increasing daily haul capacity and revenue, particularly when interstate GVW limits were raised to 88,000 lbs., generating an additional yearly revenue of $27,881.61. Pavement damage costs are also estimated to be 45.9% lower on interstate highways compared to state and county roads, suggesting increased interstate access, coupled with higher GVW limits, could substantially improve safety and operational efficiency in timber transportation in Alabama and beyond.