← All tasks

RAIL / RED SIGNALS AND STATION QUEUES

Train stuck at a red signal?

Pre-release | Checked September 28, 2026. Announced TF3 rules; release build not playtested.

Check the path ahead before changing priority

A TF3 signal turns green when the approaching train can reserve its intended route. An occupied route, unusable passing place or unavailable station terminal needs a routing check. A free track beside the train does not by itself mean its line can use it.

Passenger and freight trains share a wooded railway corridor in Transport Fever 3
A shared railway corridor. Inspect the stopped train’s actual reserved path and terminal; this image is not a universal signal layout. Official press image · © Urban Games ↗

What to do

  1. Follow the stopped train’s line to its next destination. Inspect the route shown for that service. Separate a train waiting for occupied track from a line that has no usable connection to its stop; changing priority cannot create a missing connection.
  2. Trace the shared section, including intermediate stops. Urban Games says TF3 can reserve beyond an ordinary stop, up to a reversing stop or the next signal. An ordinary station on single track is therefore not a reliable place to assume the reservation ends. Check where an opposing train is expected to wait.
  3. Inspect the intended passing place. Confirm both routes have a continuous path through it, with signals at the places where trains are intended to pass. Read signal orientation against each train’s direction. This is a layout check, not a universal signal-placement blueprint.
  4. Check the station’s primary and alternative terminals. When the primary terminal cannot be reserved, TF3 can consider configured alternatives. Review the line/station terminal choices and ensure an alternative is actually connected to the approach. An empty platform that is not a configured alternative is not a guaranteed fallback.
  5. Change one bottleneck and observe another encounter. Fix the connection, passing route or terminal choice that failed. If both paths are usable but one service repeatedly wins the conflict, use line priority. To choose a different corridor, use waypoints.
WATCH THIS SYSTEM

Highlights

Line tools, vehicle comparisons, rail reservations and Mod Hub.

Watch on YouTube ↗

Official pre-release overview. Use the written checks for this task; older videos may describe plans that later changed.

How to tell it worked

The previously stopped service can reserve and traverse its intended path, and opposing services also continue. Observe several encounters and station arrivals; one green signal on an empty network is insufficient to show a busy layout works.

If you are still stuck

  • Primary platform remains busy: Check that a configured alternative can be reached without crossing the same occupied entrance. Extra platforms alone may not remove the shared conflict.
  • Two opposing trains cannot pass: Revisit the actual passing location and reservation endpoints. Raising both priorities does not create room for them to pass.
  • The train moves but deliveries remain late: Continue with the delivery-timing checklist; loading or maintenance may be the next delay.