Yes you are kinda ‘forced’ to build single tracks to keep spacing between trains. This really needs to change in future updates! Trains should wait at stations until the calculated average freq time is met. Then leave. In the end, with double tracks.. the trains will always tailgate.. signals or not.
There are three things that needs to be ‘fixed’
– Use of multiple platforms at stations
– Use of freq time before leaving station
– Waypoints for lines!