Thats impressive they were calm in DC, in Columbus OH people were crazy. I saw someone in on of those little parking lots where you give the attendant your keys and they park your car couldn't get thier car out so they looked in the booth and found the keys of the car blocking them in and then pulled it out of the way and on to the sidewalk and just left it running with the door open while they got back in their car and drove away. No one was obeying traffic lights and we were some of the last to leave since my wife's employer didn't evacuate the staff until the higher ups were all out of the building.
Snow storms are just as bad, people either try to still go faster than the speed limit or drive half of it in between two lanes blocking both of them.