The Knee Bone's Connected to the Thigh Bone! 

A day does not go by in Washington without legislation intended to fix one problem ultimately affecting a host of other issues. It’s the principle of unintended consequences, and a fact of life in our complex world where everything has become so interconnected. Nowhere is this more evident than the transportation industry, which touches our economy, our environment and our infrastructure in virtually innumerable ways. It’s like the lyric from the popular children’s song that says “The knee bone’s connected to the thigh bone ...” Trucking, it seems, is connected to everything.

One example of how one issue can have a ripple effect on many others is truck productivity. The crux of the issue is truck size and weight, a debate that’s been raging for years in Washington and throughout the transportation sector. Recent forecasts estimate that freight volumes will increase nearly 28 percent by 2018, a growth curve that — absent any change in current size and weight restrictions — will require several million more trucks on America’s highways to meet demand. “More jobs, now that’s great!” you might think … until you consider the interconnected, unintended consequences: more traffic congestion and lost productivity. Increased fuel consumption and higher carbon emissions. The effect of more trucks putting more miles on a highway infrastructure already strained to the breaking point. The knee bone’s connected to the thigh bone ...

Many in the industry think the solution is clear: improve truck productivity. And there is a precedent — our counterparts in Europe, Canada and Australia have already done that and are reaping significant benefits. There’s plenty of research to support it. A 2008 American Transportation Research Institute study found that aligning our truck size and weight with the higher international standards would lead to great gains in productivity, as well as reductions in carbon emissions and a better shot at competing effectively in the global marketplace. The American Trucking Associations (ATA) has produced a list of recommendations — including raising the allowable weight of six-axle vehicles to 97,000 pounds and permitting 33-foot trailer combinations in certain states, and expanding the use of triple trailers where it is safe and practical to do so. We hope Congress will seriously consider them. With the projected rise in freight volumes, maximizing the efficiency of ou r transportation infrastructure has never been more important.

One state that may prove to be a good test bed is Maine. The Fiscal Year 2010 Transportation Appropriations bill recently signed into law by President Obama includes a provision to create a one-year pilot project to study the effects of eliminating the 80,000-pound vehicle weight limit on Maine’s federal highways. Allowing heavier trucks for a year will give researchers a chance to assess the impact on the much-debated areas of safety, commerce and road wear and tear.

It will be interesting to see how this experiment will educate the debate and, ultimately, the policy decisions which result. If the experience of our international colleagues is any guide, the consequences of more productive trucks will bring measurable benefits — for highway safety, the economy, our environment, congestion, business efficiency, energy policy and many other issues. The knee bone is connected to the thigh bone ...