Tracy Morgan's health is said to be improving after a horrific highway crash in which he was badly injured and one of his friends killed .
"His personality is certainly starting to come back as well," said Lewis Kay, spokesman for the actor and comedian, saying his condition had been upgraded to fair .
The 45-year-old former Saturday Night Live and 30 Rock star had broken ribs and a broken leg in the June 7 crash on the New Jersey Turnpike. The accident killed fellow comedian James McNair and seriously injured two other people.
Tracy's assistant Jeffrey Millea has also been upgraded to fair condition, Lewis said, but comedian Ardie Fuqua remains in a critical condition.
Prosecutors say a Wal-Mart lorry driven by Kevin Roper hit Tracy's limousine. Roper has pleaded not guilty to death by auto and assault by auto charges.
A criminal complaint says Roper had not slept for more than 24 hours before the accident when he swerved to avoid slowed traffic on the turnpike and smashed into the limo.
Wal-Mart Stores, based in Bentonville, Arkansas, has not explained what Roper's driving route was. It has said it believes he was complying with national safety regulations.