Version of OpenTTD

Last tested: d7a928a-windows-win32 (Windows 7 Ultimate)

Expected results

A. When de-electrifying electrified track with a single electric vehicle on it, the train gradually stops (vehicle state set to "Stopping, XX km/h")
B. When re-electrifying track with a single electric vehicle on it, the train should either remain stopped or automatically start back up. Attempting to restart the train succeeds normally.
C. When placing signals over track with single engines on it, the train does not stop.

Actual results

A. When de-electrifying electrified track with a single electric vehicle on it, the train instantly stops (velocity set to 0 in track conversion routine).
B. When re-electrifying track with a single electric vehicle on it, the train remains stopped. Attempting to restart the train gives "Waiting for free path" despite a closed loop with 1 train and no signals.
C. When placing signals over track with single engines on it, the train instantly stops.

Steps to reproduce

1. Build track and a depot as shown.
   
2. Buy a single electric vehicle in the depot. For example, buy one "SH '30'".
3. Start the train.
4. When the train has exited the depot, demolish the depot and replace it with a straight piece of electrified track, as shown. The train should be going normally, it should say "No orders, X km/h".
   
5. Pause the game and enable build on pause.
6. De-electrify the track where the train is on. The train will instantly (not gradually) stop.
7. Re-electrify the track where the train is on. The train will stay "Stopped".
8. Re-start the train. It will say "Waiting for free path".
9. When the train is on a straight piece of track, place a normal bidirectional signal over said track. The train will instantly stop and say "Waiting for free path".