Get Out Of Town!

Roadgeeks' response to New Orleans' hurricane evacuation (unsurprisingly) focused on the tactical. Said one report:

"'Highways in Mississippi and Louisiana were jammed as people headed away
from Katrina's expected landfall. All lanes were limited to northbound
traffic on Interstates 55 and 59 in the two states.' [and maybe I-10
Westbound only by now, too]"

That's fairly odd -- and most likely a rather disconcerting driving experience: think of looking at the back of signs! It certainly doesn't match the image provided by Xinhua (shown here), of cars clogging (presumably) "the 10." In disaster scenarios, making the entirety of an interstate one-way does seem to be a sensible approach. After all, they do it on Sundays in Rio de Janeiro for no apparent reason on the highways along Copacabana beach.