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emissions and significant reductions in ozone precursors . These renewable biofuels are helping public and private fleets in cities and states across the country take meaningful steps toward a low-carbon future . Our shared goal is to provide goods movement technologies that meet the needs of the customer and society , and are economically viable . The new generation of advanced diesel technology is already competing in the future , today .

Heavy Duty Trucking in the U . S .:

More than 4.9 million new-generation diesel-powered Class 8 ( tractor-trailer size ) vehicles are on the road in America today – that means 36 percent of America ’ s Class 8 truck fleet runs on the newest , cleanest diesel technologies .

More than 97 percent of all U . S . Class 8 trucks run on diesel fuel .

About 21 percent of all commercial trucks ( Class 3-8 ) use gasoline . Only about 4 percent use other fuels , with those using natural gas amounting to less than 1 percent .

The 4.9 million new-technology diesel trucks on America ’ s roads have removed more than 26 million tonnes of nitrogen oxides ( NOx ) and 59 million tonnes of carbon dioxide ( CO2 ) from the air .

In 2014 , the first-ever fuel economy rule for commercial vehicles kicked in . Three out of every four of these trucks are powered by diesel , more than 97 percent of the larger Class 8 trucks are powered by diesel . Technologies designed to meet these rules will make the fuel-sipping diesel engine sip even less fuel . Between 2014 and 2018 , these fuel-efficient trucks will have saved 530 million barrels of crude and eliminated 270 million tons of carbon dioxide .

All new diesel trucks sold since 2011 meet stringent emissions standards establish by the U . S . EPA , CARB and the NHTSA . The EPA ’ s Cleaner Trucks Initiative , launched in November 2018 , will help bring the next generation of commercial diesel trucks even nearer to zero emissions than ever before .

As of March 2019 , U . S . sales of Class 8 trucks was up by nearly 18 % over last year . By the end of 2019 , ACT Research analysts forecast U . S . sales of new Class 8 trucks will top 264,000 . The overwhelming majority of these trucks will be powered by advanced diesel technology .

Research and development of new clean diesel and hybrid technologies continue to push the envelope . Engine manufacturers participating in the U . S . Department of Energy ’ s SuperTruck program are pursuing 57 % thermal efficiency for Class 8 trucks . These benefits are delivered by clean diesel technology .

Diesel technology offers truckers the greatest fuel efficiency for the dollar . As evidenced in the recent “ Run on Less ” campaign from the North American Council on Freight Efficiency , after more than 50,000 miles , the seven Class 8 diesel trucks in the demonstration exceeded an average of 10 mpg , even with heavy loads of more than 65,000 lbs ., with some trucks exceeding 12 mpg . This represents a dramatic improvement in ton-mile freight efficiency .

Diesel-powered trucks , trains , ships and intermodal systems move more than 80 percent of all cargo in the U . S . and more than 90 percent throughout the world . According to The Fuels Institute , diesel will remain the predominant fuel for commercial vehicles through at least 2025 , when it retains 96 percent of the medium- and heavy-duty market . Ultra-low-sulfur diesel fuel is available at all truck stops and more than half of all retail fuel stations across the country .

Today ’ s heavy-duty diesel engines virtually eliminate criteria emissions , including particulate matter and NOx .

It would take more than 60 of today ’ s generation of diesel-powered heavy-duty commercial trucks to equal the emissions of a single U . S . model made in the pre-2000 era .

The Health Effects Institute Advanced Collaborative Emissions Study ( ACES ) undertook the most comprehensive emissions and health testing examination done to date of new-technology heavy-duty diesel engines meeting the U . S . 2007 / 2010 on-road diesel emissions standards . The study reports the effectiveness of diesel particulate filters in reducing particulate matter emissions by more than 90 percent and of selective catalytic reduction systems in reducing smog-forming NOx emissions by 94 percent .

Renewable diesel fuel cuts greenhouse gas emissions by more than 80 percent ( compared to fossil-based diesel ) and reduces emissions ( soot ), and does so without requiring any engine or vehicle conversions or the buildout of expensive new infrastructure .

By Allen Schaeffer , executive director of the Diesel Technology Forum l FON

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