They are saying the air quality tests show it is safe in the crash site area to leave the house, get in a car and drive away. Mandatory evacuation.
I haven't heard about our specific area; we're five miles away, but assuming it's not bad or we'd have heard.
Also saw info that the flight restriction is only to a height of 3,000 feet so commercial avaition is not affected.
Sadly, the story also says they expect the death toll to rise.
Info is from a story on the nbc6 news site in Charlotte. I'll include a link but registration is required to read the full story.
Two dead, 180 treated after chemical spill that followed train crash