Christina Ruffini is a CBS News broadcast associate based in Washington.

(AP)
During Tuesday’s festivities, when cabs are scarce, limos are expensive and buses are downright confusing, everyone from the Metro police to the sandwich artists at Subway seem to agree that if you can’t walk it, the rails are your best bet for inauguration transportation.
As someone who rides the train for an hour everyday, twice a day, five days a week and occasionally on weekends, I have become nauseatingly familiar with the unwritten rules of the rails. They are not difficult to figure out. Anyone who is paying the slightest bit of attention to their surroundings or has a modicum of respect for their fellow human beings should be able to deduce the basics.
For example, when heading into a station - or trying to escape from one - people usually stand on the right side of escalator. This is not some en mass form of street performance art. It is so that the lazy, the high-heeled, the elderly and the injured can get out of the way of the running-lates, the highly caffeinated, and the ambitious showoffs who feel the need to climb what are literally some of the tallest moving stairways in North America. Stand right, walk left, and keep you luggage, purses or overcoats on your side of the stair. Nobody likes an escalump.
Once on the train, please do hold on. There is nothing worse than ...
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