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Today in History: Amtrak's EMD F40PH Diesel Locomotive Enters Service

4/9/2026

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Summary

Story summary

On April 9, 1975, the first EMD F40PH locomotive entered service with Amtrak, marking a significant advancement in U.S. rail transport. Designed for short-haul routes, the F40PH became the backbone of Amtrak's diesel fleet, later finding extensive use on commuter railroads and with VIA Rail in Canada. Its introduction transformed intercity rail service across the nation.

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Story summary

On April 9, 1975, the first EMD F40PH locomotive entered service with Amtrak, marking a significant advancement in U.S. rail transport. Designed for short-haul routes, the F40PH became the backbone of Amtrak's diesel fleet, later finding extensive use on commuter railroads and with VIA Rail in Canada. Its introduction transformed intercity rail service across the nation.