Pikka opened the ticket and wrote:

r24825

I am updating UKRS2 to use vehicle var 4C, rather than var 98. I use this variable to test how close the train is to its top speed, by subtracting the var B4, current speed, from var 4C, or var 98 in the old version.

This works great and the running sounds and costs are now changed correctly when the train is slowed by a timetable, but not when the train is slowed by a bridge speed limit. It is desirable that bridge speed limits should affect this variable, but the documentation is unclear on whether it currently should ("including e.g track or timetable speed limits"). I have not yet tested speed-limited tracktypes.

When attempting to create a test grf for this issue, I crashed OpenTTD. I will post that crash separately.

Reported version: trunk
Operating system: Windows

This issue was imported from FlySpray: https://bugs.openttd.org/task/5397