Lots of Good picks. There are many on my Train movie list:
The Great Locomotive Chase 1956- Fess Parker. Classic Disney Civil War
The Denver and Rio Grande- 1952-Edmund O’Brien. Battle among competing Railroads.
Narrow Margin 1952 -Charles McGraw or the remake 1990 with Gene Hackman. A good guy protects the witness.
Northwest Frontier -1959-Kenneth Moore & Lauren Bacall. Great stream locomotive runs thru high desert country of India followed by bad guys. This is a hidden gem of a movie.
Human Desire-1954- Glen Ford, Broderick Crawford, Gloria Grahame, Railroad guys battle over a woman.
Any of the Murder on the Orient Express. Agatha Christie mystery.
Happy Thanksgiving