Apologies for the headline, but you know everybody else will be doing it...

Below is a photo (from here) as of about ten minutes ago showing the exodus from Houston. Shouldn't someone give the order to turn the southbound lanes into additional northbound (i.e. evacuation) lanes?

Wasn't this an issue during the New Orleans evacuation?

MORE: Reportedly, Gov. Perry did make an order but, according to the traffic cams, not every southbound road has been converted to northbound traffic as of this point.