01025583

Component

https://doi.org/10.3141/1967-03

http://scholar.google.com...dley&publication_year=2006

In North America, imposition of seasonal weight restrictions on thaw-weakened secondary roads may interrupt transport of raw materials to processing facilities for 6 to 12 weeks or even longer. This annual disruption forces processing facilities to operate from stockpiled inventory and typically results in large extra costs for both the processing facility and trucks. The Forest Engineering Research Institute of Canada (FERIC) has been investigating the potential for shortening the weight restriction period (i.e., lengthening the period for hauling with full, legal weights) on secondary roads by hauling with road-friendly trucks. FERIC developed a modeling process to estimate when fully loaded trucks equipped with road-friendly technologies, such as multiple axle groups, large tires, or tire pressure control systems (TPCS), could resume hauling on thaw-weakened pavements without accelerating pavement damage. From 2000 to 2003, FERIC used this modeling process to conduct full-scale tests on a variety of thin pavements in British Columbia, Canada. During these tests, fully loaded log trucks were able to haul during the last 3 to 5 weeks of the weight restriction period with no measurable increase in pavement rutting or cracking. In 2004, the British Columbia Ministry of Transportation introduced a program to exempt trucks operating with TPCS from seasonal weight restrictions on approved roads in British Columbia. FERIC, in cooperation with several forest companies, conducted operational hauling under the new program in spring 2004 and 2005. The operations experienced from 2 to 8 weeks extra hauling during the weight restriction period, with no acceleration of road damage.

01037970

English

pp 20-26

2006

Transportation Research Record: Journal of the Transportation Research Board

0309099765

Print

Figures (3) ; References (17) ; Tables (1)

Axle load force; Field tests; Load limits; Logging trucks; Pavement cracking; Pavement performance; Policy; Rutting; Seasonally frozen ground; Secondary roads; Thaw; Tire pressure; Vehicle weight

British Columbia

Design; Highways; Pavements; Policy; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

PRP, TRIS, TRB, ATRI

Mar 3 2006 10:28AM

• Asphalt Multi-Integrated Rollers and Steel Drum Compactors: Evaluating Effect of Compaction on Permeability of Asphalt Pavements
• Comparative Design Case Studies of Pavement Performance on Expansive Soils
• Design Model for Roughness and Serviceability of Pavements on Expansive Soils
• Duration of Spring Thaw Recovery for Aggregate-Surfaced Roads
• Effectiveness of Open-Graded Base Layer on Subgrade Moisture Regime and Overall Pavement Performance
• Estimating Thermal Conductivity of Pavement Granular Materials and Subgrade Soils
• Estimation of Expected Moisture Contents for Pavements by Environmental and Soil Characteristics
• Evaluation of Resilient Modulus Model Parameters for Mechanistic–Empirical Pavement Design
• Field Monitoring of Moisture Variations Under Flexible Pavement
• Implementation of Spring Load Restrictions Using a Deflection-Calibrated Thaw Index
• Investigations of Environmental and Traffic Impacts on "Mechanistic-Empirical Pavement Design Guide" Predictions
• Laboratory Evaluation of Untreated and Treated Pavement Base Materials: Repeated Load Permanent Deformation Test
• Resilient Modulus Estimation System for Fine-Grained Soils
• Safety and Cost-Effectiveness of Approach Guardrail for Bridges on Low-Volume Roads
• Safety Effectiveness of Stop Control at Ultralow-Volume Unpaved Intersections
• Two-Dimensional Moisture Flow–Soil Deformation Model for Application to Pavement Design