The whole thing has to fit on a standard, US letter-sized paper though there is some flexibility to go larger if absolutely necessary to maintain readability.
I am looking for feedback on these base colors. I want the street car line (the orange dotted line, with circles representing stops) to stand out, and since the highway does bifurcate the area, I want it to be a solid reference but not so prominent that it jumps off the page. I am open to any suggestions on tweaks or improvements before I move on to the other details. Sorry for the lack of legend, etc., but hopefully what you are seeing is clear enough.
In addition to this, I will also be publishing a b&w version for any color-blind attendees. I haven't gotten that far yet.