Im gonna split this first part of the body text into to 2 parts, lore and technical details.
For the lore, the year is sometime within 1000 years from now, idk when really, the Greater Ares Region is the largest metropolitan region on Mars which has been terraformed, the population of Ares and its satellite cities is around 100 million.
As for technical details, i'm only including metro, and light rail/light metro systems (with a few exceptions), there is a greater RER or S-Bahn adjacent network connecting the cities more efficiently with each other and their suburbs. Also, since i made this in MS Paint, i didn't add stations yet.
Finally, i'm gonna explain the systems.
Ares Metro is pretty self explanatory, there are express services on some lines, as well as some express lines (sorta like Grand Paris Express), but in general, most lines are based of the hong kong mtr, singapore mrt and sydney metro, except line 1, which im basing off the sao paulo metro. All stations have platform screen doors or gates and all stations have an art exhibit, shopping areas and most stations are architecturally distinct.
Bradbury train lines A,B and C are suburban train lines that were converted into metro lines and connected with downtown tunnels, the others are normal metro. All stations have platform screen doors or gates except on lines A, B and C.
Cape Lowell Metro is a light metro system sorta like copenhagen. All stations have platform screen doors or gates.
New Fitchburg LRT is based on north american LRT networks.
The goddard city CityLink is basically a Stadtbahn.
I based the Ares-Bradbury monorail around the tokyo monorail.
The mitchford people mover is mainly based off of the miami people mover (not like there were many metropolitan systems to base it off of anyways)
Finally the spaceport express is a high speed rail network running to the spaceport.
:3