A highly respected consulting firm, Woodrooffe Dynamics LLC, was commissioned to do a comparative performance evaluation of 33′ doubles compared to 28′ doubles. The study included computer simulations of the double 33’s. No significant safety concerns were identified. With respect to several parameters, the 33′ configuration improved handling and stability.
Pavement and Bridge Damage Reduced
While not increasing the maximum permitted weight, the HR-7 provision would result in 16% more cubic capacity in each set of doubles. The primary users of doubles are package companies and less-than-truckload companies. Since these operators typically fill the trailers with freight that weighs significantly less than the 80,000 lb. maximum, they will be able to utilize fully the additional cubic capacity. This will reduce the number of truck trips accordingly, with a commensurate reduction in pavement wear. Because the double 33’s spread the weight of the truck out, there should be a positive impact on some bridges.
Congestion Reduced
The American Trucking Association estimates that trucks will haul 30% more freight in just ten years. The increased cubic capacity of double 33’s will reduce the number of additional trucks on our roads required to carry this substantial increase in freight.
Emissions Reduced
16% more cubic capacity means an equivalent reduction in overall fuel burned by doubles and the related emissions.
International Competition and Productivity
Other nations, such as Canada, allow for longer truck combinations that in turn allow them to be more productive. In order for the U. S. to remain competitive, we need to be on a level playing field.
Additionally, the increased productivity of double 33’s will reduce the cost of freight transportation. Trucking is an intensely competitive business, which means shippers and ultimately consumers benefit from improved productivity.
Supporters
American Trucking Association, National Association of Manufacturers, NIT League, FedEx, UPS, AAA Cooper Transportation, ABF Freight System, Inc. (ABF), Con-Way Inc., Estes Express Lines, Volvo Trucks North America and YRC Worldwide.
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