Batteries possibly included: the train engine innovations taking on diesel
From LA to Chicago, Santa Fe Railroad was first to have diesel engines pull passenger cars – San Bernardino Sun
Why Do Trains Have Engines on Both Ends? - Train Conductor HQ
Hauling freight trains with electric locomotives is now starting to happen | CBC News
Why do trains have engines on both ends? - Quora
How Diesel Locomotives Work | HowStuffWorks
How Do You Get a Train Moving? | WIRED
Why railroads put locomotives in the middle of a train - Trains
Do trains have engines on both ends? If yes, why do trains have two engines? - Quora
Are US trains really that bad? It's complicated - CNET
The Evolution of Passenger Trains | Strasburg Rail Road
Commentary: Many freight locomotives no longer needed - FreightWaves
Head-end power
Meet the 'T' Train: Vande Bharat-Vistadome Comfort, Old Steam Avatar for Electric Engine, Tourist Special - News18
Do trains have engines on both ends? If yes, why do trains have two engines? - Quora
Double heading - Wikipedia
Why do trains have locomotives at the rear end ? – MechStuff
UP: From Steam to Green: The History and Evolution of Locomotives
Why do some trains have two engines? Do they need the second one for power? - Quora
Can Trains Run Backwards? – Traingeek – Trains and Photography
Locomotives – Southeastern Railway Museum
The True Dangers of Long Trains
A Brief History of Stopping Trains | by Sumanth Srinivasan | Medium
Nuts & Bolts: Why is there an engine in the middle of that train? | GoRail
How Do Model Trains Work? - Charles Ro Supply Company
Why do trains have locomotives at the rear end ? – MechStuff
Locomotive | Definition, History, Design, Types, & Facts | Britannica
