News Releases


Union Pacific, California Air Management Districts Partner in New Emission-Reducing Switching Locomotives Initiative

Roseville, Calif., May 1, 2018

Union Pacific is partnering with the Bay Area Air Quality Management District and Sacramento Metropolitan Air Quality Management District to repower 10 low horsepower diesel-electric locomotives into new EPA Tier 4 switchers for its yard switching locomotive fleet beginning in fall 2018. The new switchers will reduce particulate matter and oxides of nitrogen emissions by more than 90 percent during operations when compared to older locomotives.

Tier 4 technology is the EPA's cleanest locomotive emissions standard. Utilizing its multi-engine Genset locomotive, Union Pacific is the only Class 1 railroad operating Tier 4 switchers and is the first Class 1 to pursue Tier 4 repowers.

"Reducing diesel emissions is an essential element of the Air District's continuing efforts to protect public health in communities that are highly impacted by the Bay Area's freight movement infrastructure," said Jack Broadbent, Air District executive officer. "The Air District is pleased to assist Union Pacific in switching their locomotives to meet the cleanest national air emission standards."

The new single-engine locomotives are designed to ultimately replace the Genset concept Union Pacific pioneered in 2005.

"The new low-power switchers will be an invaluable addition to our fleet," said Mike Iden, Union Pacific director of locomotive engineering. "The coordination with Progress Rail and our partnerships with the Air Districts are pivotal in ensuring this new technology comes online to provide environmental benefits to our California operations."

Funding for the initiative was made possible through the Proposition 1B: Goods Movement Emission Reduction Program (GMERP), a partnership between the California Air Resources Board and local Air Districts, aimed at incentivizing freight-moving equipment owners to upgrade to cleaner technologies.

The switcher units are currently being repowered at a Progress Rail facility in Patterson, Georgia, and will start joining Union Pacific's yard locomotive fleet in the Bay Area and Sacramento later this year.
Union Pacific has worked closely with Progress Rail since 2015 on an updated, emission-reducing Tier 4 switcher design. The companies are working together during the switcher's demonstration operations and in-service verification testing taking place in Union Pacific's City of Industry, California, rail yard.

About Union Pacific

Union Pacific Railroad is the principal operating company of Union Pacific Corporation (NYSE: UNP). One of America's most recognized companies, Union Pacific Railroad connects 23 states in the western two-thirds of the country by rail, providing a critical link in the global supply chain. In the last 10 years, 2008-2017, Union Pacific invested approximately $34 billion in its network and operations to support America's transportation infrastructure. The railroad's diversified business mix is classified into its Agricultural Products, Energy, and Industrial and Premium business groups. Union Pacific serves many of the fastest-growing U.S. population centers, operates from all major West Coast and Gulf Coast ports to eastern gateways, connects with Canada's rail systems and is the only railroad serving all six major Mexico gateways. Union Pacific provides value to its roughly 10,000 customers by delivering products in a safe, reliable, fuel-efficient and environmentally responsible manner.

The statements and information contained in the news releases provided by Union Pacific speak only as of the date issued. Such information by its nature may become outdated, and investors should not assume that the statements and information contained in Union Pacific's news releases remain current after the date issued. Union Pacific makes no commitment, and disclaims any duty, to update any of this information.

Media Contact

Justin Jacobs