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June 23, 2021   |

Press Release

54.5 Percent of Commercial Trucks Operating in Arkansas, Louisiana, New Mexico, Oklahoma and Texas Now Powered by Newest-Generation Near-Zero Emissions Diesel Technology


JUNE 23, 2021 (WASHINGTON, DC) – In Arkansas, Louisiana, New Mexico, Oklahoma and Texas - the states that comprise EPA Region 6 - the newest, cleanest, near-zero-emissions diesel truck technologies now make up 54.5 percent of the diesel-powered commercial vehicles on U.S. roads, above the national average of 49 percent, according to the Diesel Technology Forum’s analysis of 2020 U.S. vehicles in operation data (Class 3-8) provided by IHS Markit.  The region is the top region in the U.S. for share of commercial vehicles that come with the latest near-zero emissions technology generating significant environmental benefits.

“As more of America’s commercial trucks rely on the newest, cleanest diesel technologies, greater air quality and fuel savings benefits are being realized by communities across the country. Oklahoma, one of the Region 6 states, is leading the region for the highest percentage of newest-generation diesel trucks, with just over 58 percent of the state’s diesel fleet using the newest, cleanest diesel technologies,” said Allen Schaeffer, executive director of the not for profit Diesel Technology Forumthat represents leading manufacturers and suppliers of advanced engines and components, emissions control systems and both petroleum and renewable fuel interests.

“While the promise of zero-emission commercial vehicles in the future is growing, it may be many years if not a decade or more before these solutions enter the fleet in significant numbers, making the growth in new near-zero emissions diesel trucks key to sustaining climate and clean air progress.

“Beginning in 2010, all new heavy-duty trucks have been equipped with selective catalytic reduction (SCR) and particulate control technologies. These active systems utilize diesel exhaust fluid (DEF) to achieve near zero emissions and comply with U.S. Environmental Protection Agency (EPA) emissions requirements for nitrogen oxide (NOx) emissions of no more than 0.20 grams per brake horsepower hour (g/BHP-hr), and particulate matter (PM) emissions levels of no more than 0.01 g/BHP-hr.

National Analysis

Nationwide, the newest, cleanest, near-zero-emissions diesel truck technologies now make up almost half of the more than 11 million diesel-powered commercial vehicles on U.S. roads, according to the Diesel Technology Forum’s analysis of 2020 U.S. vehicles in operation data (Class 3-8) provided by IHS Markit.

Since 2007, these newest-generation diesel trucks nationwide have eliminated 202 million tonnes of carbon dioxide (CO2), 27 million tonnes of NOx, and saved almost 20 billion gallons of diesel and 472 million barrels of crude oil.  Put into context, the emissions and fuel savings attributable to new-generation diesel engines in commercial trucks equates to making 43 million cars all-electric or creating 42,000 wind turbines on land five times the size of Washington, D.C.

By 2030, thanks to the continued increase of newest-generation diesel-powered vehicles, these savings are projected to grow to 1.3 billion tonnes of CO2, 47million tonnes of NOx, 2.7 million tonnes of PM, 130 billion gallons of diesel and 3.1 billion barrels of crude oil.

According to Vehicles in Operation Data (2019-2020) from IHS Markit, a total of 15 states are at or above the national average for the percentage of clean diesel Class 3-8 commercial vehicles (all U.S.: 49 percent), and 23 states are growing their clean diesel fleets faster than the national average (all U.S.: 6.3 percent).  A full state-by-state breakdown is available on the Forum’s website at https://www.dieselforum.org/in-your-state.

2021 HD Benefits Infographic

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About the Diesel Technology Forum

The Diesel Technology Forum is a non-profit organization dedicated to raising awareness about the importance of diesel engines, fuel, and technology.  Forum members are leaders in clean diesel technology and represent the three key elements of the modern clean-diesel system: advanced engines, vehicles and equipment, cleaner diesel fuel and emissions-control systems.  For more information visit http://www.dieselforum.org.

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Key Contact

Media Inquiries:
Allen Schaeffer
Executive Director
(301) 668-7230

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