Scientist-activists call for truck mpg standards; 40% improvement ‘within reach’
The UCS report calls for a 10.7 mpg target for tractor-trailers by 2025, compared to the 5.8 mpg average in 2010, a 46% reduction. Vocational vehicles would get 14.3 mpg, up from 9.7 (32%), according to the plan. (See Table 1.) “Precisely how to get there and encourage the technologies to be deployed is up to the agencies,” Cooke said. “This is where the industry could get to. EPA and NHTSA, do your job and help them get there.” An Obama administration initiative, National Highway Traffic Safety Administration (NHTSA), along with the Environmental Protection Agency (EPA), last year began work on Phase II of its greenhouse gas standards for medium- and heavy-duty vehicles. The initial standards became effective Jan. 1 for model year 2014 trucks, and are set to be strengthened with model year 2017. Phase II would target 2018 and beyond. In comments filed last summer for a NHTSA notice of intent, American Trucking Assns. called for “national harmonization” of all standards for the trucking industry – including standards under Phase II. To ease the financial burden on truck buyers, ATA supports an 18-month or less ROI on all technologies under Phase II and encourages the agencies to more accurately account for both projected equipment and operation and maintenance costs. “Our recent experiences with untested emission reduction technologies in 2002, 2007, and 2010 speak volumes,” ATA writes. “It was not uncommon to see engine warranty claims per model year of nearly 200 percent on an annual basis. The trucking industry has learned a hard, financial lesson from these recent technology failures and will not accept further technology-forcing standards that have not had sufficient lead time for development and testing.” In its comments, the Owner-Operators Independent Drivers Association also focused on cost and real-world results. “The most crucial consideration is that a more affordable and reliable truck is more likely to be purchased at an earlier date by someone who is considering a new truck,” OOIDA says. The association also suggests that a seemingly positive environmental requirement can turn into a negative one for safety, and cites the optional use of automatic engine shutdown switches under Phase I. “While reducing wasteful idling time is a very laudable goal and one that drivers who pay for their own fuel are extremely aware of, the requirement in Phase I that the driver have a limited ability to manually override the switch has the opportunity to result in unintended negative safety consequences,” such as inadequate driver rest if a driver has limited control over the cab climate when parked. Truck, engine and trailer makers weighed in as well, with most pointing out how difficult it is to develop a rule to address a varied and complex industry as trucking. Volvo Group even pointed out that congestion mitigation, smart highway systems, permitting longer combination vehicles, improved shipping logistics and packaging would substantially reduce truck fuel consumption.