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4/3/2014 2:00:00 PM Write a Letter to the Editor Write a letter to the Editor

Report Recommends Use of Natural Gas, Trailer Modifications to Meet Fuel Standards

Russ MacNeil for TT

Environmental regulators should develop a separate standard for natural gas vehicles when they implement the second phase of fuel-efficiency standards for heavy-duty trucks, according to a study released April 3 by the National Research Council of the National Academy of Sciences.

The new report offers guidance for the Phase II rule under development, directed at technologies and programs in the post-2018 time frame.

Those standards — announced in February by President Obama — are a follow-up to a 2014 regulation requiring carbon dioxide emissions and fuel economy improvements in heavy- and medium-duty trucks fueled by diesel or natural gas.

Obama directed a new fuel rule to be developed by March 2016, which could take effect by 2020.

Expanded use of natural gas as a transportation fuel — along with greater use of aerodynamic devices on trailers — are among NRC’s recommended strategies for reducing fuel consumption by tractor-trailers, buses, commercial vehicles, trucks and other medium- and heavy-duty vehicles, the study said.

The report follows a 2010 NRC report whose findings and recommendations informed the Phase I rule on fuel consumption and greenhouse gas emissions of medium- and heavy-duty vehicles issued jointly by the National Highway Traffic Safety Administration and U.S. Environmental Protection Agency.

EPA wants to reduce GHG emissions — primarily CO2 — while NHTSA is concerned with boosting miles per gallon.

The report also recommended that federal agencies adopt a regulation requiring that all new 53-foot or longer dry-van and refrigerated-van trailers meet performance standards that will reduce fuel consumption and CO2 emissions.

By Eric Miller
Staff Reporter

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