Amtrak prepares for new Siemens diesel locomotive fleet

Rendering of new Siemens-built ALC-42 diesel locomotive in blue, red, and gray.

Amtrak has released renderings of the first new Siemens ALC-42 locomotives that will replace the GE P40 and P42 fleet on its national network, including all long distance and many state-sponsored routes.

Five of the first six locomotives will have this version of the current Phase VI paint scheme, and one will be painted to recognize next year’s 50th anniversary of the inauguration of Amtrak service. A final scheme will be unveiled later as part of a fleet-wide plan.

The ALC-42 series was developed by Amtrak with Siemens Mobility and is equipped with the latest safety systems, including positive train control and crash energy management. They have alternating current for a maximum speed of 125 mph. The 16-cylinder Cummins QSK95 engine is U.S. EPA Tier 4 emissions compliant to reduce nitrogen oxide by more than 89 percent and particulate matter by 95 percent, while providing a savings in diesel fuel consumption and reaching Amtrak sustainability goals.
They are similar to the SC-44 locomotives purchased by some state agencies and operated by Amtrak, but have greater fuel capacity for longer routes and increased Head End Power generating capacity for bigger trains. A multitude of other upgrades will also lead to longer maintenance intervals. The front of the ALC-42 locomotive will serve as a “new face of Amtrak” in much of the U.S. and is designed to enhance safety, aesthetics and to simplify repairs.

The new locomotives are designated as ALC-42 for “Amtrak Long-distance Charger, 4,200-horsepower” and are in production in Sacramento, Calif. They will primarily replace Amtrak P40 and P42 diesel-electric locomotives. Although modern when bought in the 90s, the P-series locomotives have been intensively used for more than 25 years, lack up to date technology and do not achieve Tier 4 emissions standards.

The initial order of 75 new locomotives, first announced by Amtrak in December 2018, is expected to be delivered through 2024. Amtrak also has an option to order additional ALC-42 locomotives.
—From an Amtrak press release

Rendering of new Siemens-built ALC-42 diesel locomotive in blue, red, and gray.
Updated: August 6, 2020 — 2:04 PM

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