One person in the limo was killed, and three others are in critical condition, including the former star of "SNL" and "30 Rock."
Tracy had a standup gig Friday night in Delaware and was on his way home when the accident happened.
Another comedian was riding with Tracy last night -- Ardie Fuqua was the opening act in Delaware. Ardie tweeted pics of Tracy on stage and of himself standing next to the bus. In a Facebook post he wrote, "We traveled back to NYC in style in a luxury Mercedes Sprinter. Road life is a good life!"
The single fatality was a 63-year-old named James McNair.
Tracy's rep says the comedian's family is with him now and he's currently receiving "excellent care." Doctors don't anticipate a change today to his current condition.