Observed arrival · 2026-10-28

Mainline’s freight-train physics lab

mainlinesim.com Visit website

Editorial interest 83/100 Selection signal · not a rating of the site

Mainline is an in-development US freight and passenger train simulator, currently focused on modeling brakes, train resistance, and locomotive behavior.

Landing page captured for the 2026-10-28 issue.

For: Train-simulation enthusiasts and rail-operations modelers
Worth noticing: A devlog reports a 113-car stop within 1.9% of a published test, while the page also marks two FRA-test points the brake model misses.

Field notes

Current demonstrations include brake-pipe and brake-cylinder pressures across 100- and 200-car trains, plus locomotive balancing speeds checked against measured grade runs. A devlog reports a 113-car, 15,428-ton full-service stop of 5,532 feet against 5,429 feet in an AAR-published test. The page says the 3D cab, signals, dispatching, and multiplayer remain unbuilt.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

One card from the complete issue

Already Warned

254,543 arrived 1,000 judged 981 catalogued Enter the complete issue