For a time in the 1950s, Southern Pacific had the most extensive piggyback operations in the land. Here a train bound from Los Angeles to the San Francisco Bay Area climbs Santa Susana Pass near Chatsworth, Calif.
Classic Trains coll.
SP piggyback train
By Angela Cotey | October 24, 2014
| Last updated on August 8, 2025
The train is headed FOR Los Angeles and is descending the pass between Tunnels 27 and 28.