source: outdoor.com

As concern about global climate change continues to rise, more and more people are talking about shifting freight from trucks to rail. Rail is more efficient, many believe, and it requires less fuel consumption.

“This would really benefit the environment,” they say.

We say, “Not so fast.”

A recent analysis published in Transportation Fundamentals examines the truck vs. rail question and finds some interesting answers. According to author Noël Perry, managing director and senior consultant at FTR Associates, most of the U.S. freight now traveling by truck would actually require more energy consumption if transported rail-only. While rail itself is more fuel efficient, it creates far more of certain emissions than trucks are allowed to under current standards. Clearly the addition of trucks, at least in some stages of the supply chain, allows for the most effective — and greenest — combination of resources.

As Perry writes, “Existing market forces have already done an excellent job of maximizing fuel efficiency by allowing rail and truck to do what they do best.”

What they do best, according to Perry, is intercity long-haul for rail and more local short-haul transportation for trucks. The biggest challenge to combining those strengths is accessibility to intermodal terminals to enable convenient truck-to-rail transloading. The government should, Perry argues, support increased accessibility to those terminals. He also favors modifying truck size and weight standards and lowering rail’s nitrogen oxide (NOx) emissions limits to current truck standards. These actions would represent significant steps toward a greener transportation system.

Valid points, all.

There’s also the question of congestion in the nation’s freight system, a problematic issue that could become very serious in the event of a major increase in rail freight. Industry analysts have predicted that adding even 25 percent more freight into the already overburdened rail system would create serious congestion, efficiency and productivity issues. What repercussions could we expect from adding even more freight than that?

When it comes to road congestion, the picture looks no rosier. While many rail proponents push for a modal shift that would remove 10 percent of freight traffic from America’s highways, that remains an unachievable goal. In fact, an American Trucking Associations (ATA) analysis found that doubling the freight tonnage traveling by rail would result in only a roughly 1 percent reduction in trucks on the road by 2018.  To multiply that figure by 10 would require tremendous rail infrastructure investments, which seems highly unlikely — especially given that the last major line-haul route built in the United States was constructed in 1909.

Clearly, there are no quick answers. But with freight tonnage projected to grow 28 percent by 2018 , it’s good that analysts like Noël Perry are asking — and finding answers — to the questions. Let’s keep that conversation going.

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