I actually had to do so two years ago for the bus accident (March 2011) in the Bronx which killed 15.

In the Bronx, there are two major highways between my house and the hospital, the Merritt Parkway and I95. The accident happened on I95. Soon afterwards, all adjacent highways were clogged. No traffic moved all day.

Fortunately, I got called in before the traffic built up and got past the accident. The accident also happened during a change of shift so that there were TWO shifts of personnel around. Physicians, upon hearing of the accident came in of their own accord from all directions. Otherwise, things would have gotten very interesting.

"No battle plan survives contact with the enemy."

In reality, the likelihood is high that getting to work in an emergency will be problematic and work will simply have to make do with on-site personnel.

Conway Yee