Overlapping collision boxes doesn't to be an exclusion criterion/the criterion is not consistent. Below, in row 1 is the "broken" version, below is the wider variation, once without (row 2) and twice with signals (row 3 and 4). The curve completely overlaps with the highest segment and partly ...

The following screenshot shows small rail triangles that can contain multiple signals in the middle. The versions in the first row contain only straight rails, the lower versions have a curve at the top of the left diagonal. The columns show the different angles.

signal-position.png

In 8 of 9 ...