Atm I have a game with:
6 trains on the line across 4 cityes, spacing by lights works well.
Also I have an Express line, 2 trains across 4 citzes spacisn by lighs, works well.
Idea is:
6 trains means that you have to use at least 6 blocks created by lighs.
You have 4 cityes, lines goes forth and back, on the double track. So its 8 blocks by natural, from city to city. All you have to do is createone larger block, maybe two cityes are closer. Therfoere you will 7 blocks for 6 trains. One block will be larger one, so this one will make sure that trains are spaced equaly, and dont clump right after another.
If I do anything wrong, please let me know.
