/vr/ - Retro Games

Since there's no thread and some guy already asked, I might as well ask a TTD question that's stumping me at the moment, if anyone here knows their signals?

Here's what I want to do:
I ideally want to have my line look like Wintfield East. What I'd like to happen is have 6.0 length passenger trains come down the line, stop at the station for passengers, then proceed onwards. Meanwhile I want 5.0 length freight trains to divert into the siding, drop their cargo off, start coming back the way they came and cross over the tracks to the main line heading back the way the freight train came, while any 3rd train would have to wait behind the second light or risk blocking the freight trains exiting. Is this possible with signals or some sort of trickery?

If that's not possible at all, then I'd like to have my station be like Wintfield South, same deal with the passenger trains only with the freight trains coming via the branch line, dropping off their cargo before switching over to the opposing main line track. Any freight train would have to wait behind two signals and not just one, otherwise the second freight train would be preventing the first one from leaving. What signal types would I have to place and where to achieve this?

Anyone know the answer?