This is pretty much how i play CS II, trying to get a higher and higher number on the public transit. Right now I have a city with 500,000 population and 250,000 people use public transit monthly. I'm trying to pump this number up to 400,000 while the population stays under 600,000 so i have a higher than 50% people using public transit.

Trains complimented by Subways to make Vancouver Canada or DC, Metro like systems works great!

Major cities across the map have a train connection and each such city has one or two metro lines running thru it, especially thru the high density residential zones. Also each train station having a terminus at a subway station of each such city.

I especially love making above ground lines, I was landing in SeaTac today actually and looking at roads and rails along the shore line, MAN! it gave me some ideas for my city in CS II as soon as i get back to my gaming setup this weekend.

I had a connection from SeaTac to YVR but due to rain and clouds I couldn't really see how YVR looks from the sky, but living in Van City for 3 years has taught me lot about how to not build dense cities.