while it is likely that this question is answered somewhere deep in this forum, I wish to streamline my search.
1) from what little I have read thus far, I am hoping that I can buy a card and just put a certain amount of money on it, say $20 or so, then just use it until it gets low instead of having to figure out the price per fare depending on the time of day, etc.
2) if the card gets low on balance how does the system let me know.
3) are the subway stations safe enough even after 10 p.m. or so, or is it best that I avoid later returns back to my hotel? I will be using the metro station at Reagan airport as my endpoint since my hotel has a free shuttle to/from the airport.
Thanks in advance for helping me.