Is there a physical limit for the length of a train?

Question

Assume you can hook every locomotive and car Union Pacific owns up into a single gigantic freight train. Safety and laws aside, would it work?

In: Physics

Answer 1

My train obsessed 5 year old can tell you the answer to the current records for largest amount of carriages.

The longest recorded passenger train was 70 carriages. This is probably the upper limit for passenger trains due to station limitations.

The longest recorded freight train was 672 wagons and 8 engines. Freight trains can generally be longer due to them often being unloaded at ports for direct export.