Mack Trucks says the U.S. Environmental Protection Agency (EPA) and National Highway Traffic Safety Administration (NHTSA) have certified all of the company's model-year 2014 vehicles against federal fuel efficiency and greenhouse gas (GHG) regulations for 2014.

"Certification of Mack's entire vehicle portfolio reflects our continued commitment to fuel efficiency, environmental stewardship and the country's long-term energy security," says John Walsh, Mack's vice president of marketing.

Detailed information about Mack's vehicle lineup, from refuse trucks to long-haul tractors, can be found at macktrucks.com.