What?

Make quality increase circuit wire reach distance for all entities, not just power poles.

Also make quality increase wire reach distance for certain special cases like power switch (I can't think of any other cases?) https://forums.factorio.com/133821

Why?

I have often found myself ...

Placing the third wagon on a train at a train stop like the picture attached can leave the signal on the intersection green or turn it red depending on the position of the cursor. If the train is driven automatically to the station the intersection signal will be red.

In all these cases a train can ...