As someone who lives in Alexandria and occassionally metroes (speaking of pet peeves: when did we drop the rule that the plural for words ending in “o” require the addition of an “e” before the “s”?) into the city, I and my family always abide by that rule as it’s extremely obnoxious when other people do it.
But as someone who has been doing most of his commuting on the beltway, I want to say how frakking annoying, obnoxious and utterly inconsiderate DC region drivers tend to be. UGH!