Tracy Morgan remains in a critical condition but is ''doing better'' following a multi-vehicle crash last week.

The '30 Rock' star sustained a number of injuries - including a broken femur, a broken nose and broken ribs - when a Walmart truck smashed into the limo bus he was travelling in on the New Jersey Turnpike on June 7, but doctors are hopeful that he is showing signs of a recovery.

A representative for Tracy told Us Magazine: ''Today was a better day. While Tracy remains in critical, but stable, condition, he continues to show signs of improvement. His medical team remains optimistic that his recovery is progressing.''

Tracy's fiancée Megan Wollover ''remains by his side and is relaying the countless good wishes and prayers that his family, friends and fans have been sending their way.''

The nasty collision killed Tracy's fellow passenger, comedian James McNair, who performed under the name Jimmy Mack, while comedians Ardie Fuqua and Harris Stanton were also among those injured.

Kevin Roper, the truck driver involved in the crash, has been charged with one count of death by auto and four counts of assault by auto in connection with the crash, but pleaded not guilty during an appearance at Middlesex County Superior Court in New Jersey on Wednesday (11.06.14).

Following the hearing, Mr. Roper, 35, was released on $50,000 bail.