Yes, so you have 2 lines doing that? I always use 1 line for that. I use big maps, if i use 2 lines, i would loose any overview. Let alone think about having to replace vehicles on those lines seperately hehe.
They move like A – B – C – D – E – F (trainstation, passenger hub) -G – H – I – J – K – L And then they turn around doing the same line but then in opposite.
If you put the lines in the right spots (homes to workplaces and leisure) i think most profit will be made due to high frequency rate.
And besides that, seeing people waiting at a bus stop for minutes because every bus that passes is full, is not really what im trying to achieve nor satisfactory.