Minor changes to this window that make it a little easier to understand.
The window width should be slightly larger.
I don't know why the Setting input field is a little smaller than the others.
left new, right old
traffic_light_patch.png
(https://i.imgur.com/9BmXejv.png)
Standard may be able to refer to extended code.
https://github.com/jamespetts/simutrans-extended/blob/master/gui/trafficlight_info.cc
Focus on the relevant parts, I suppose there is probably not much difference.
However, there is a difference between the expressions Yellow and Amber.
other variant
traffic_light_patch_2.png
change object name from roadsign to object name