In my coverage of the water main break on Wisconsin Avenue last night, I mentioned that a tractor trailer was allowed to detour around the closure by traveling south on Wisconsin - in the northbound lanes!
Northbound traffic continued forward, and moved aside to allow the truck to pass. The scary part was that northbound traffic did not appear to have been stopped while the truck traveled toward it.
It was unclear who at the north end of the road closure - if anyone - had given the trucker clearance to drive the wrong way; other vehicles were being turned around at the roadblock.
What you see in the photos below (click to enlarge, as the truck is at a distance), is the white 18-wheeler driving the wrong way south between Dorset and Saks Fifth Avenue. The headlights of oncoming cars are visible ahead, and to the left of the truck.