Daytona Beach, FL- NASCAR revealed on Tuesday that driver A.J. Allmendinger has been reinstated following his successful completion of the sanctioning body's Road to Recovery Program.

Allmendinger, 30, was placed on indefinite suspension for violating NASCAR's substance abuse policy when his "B" sample tested positive on July 24. After failing the second drug test, NASCAR provided him with a letter outlining a process for reinstatement by participating in its recovery program. Allmendinger had been placed on temporary suspension for failing his initial drug test, which he took the last weekend in June at Kentucky Speedway.

He is now cleared to compete in any one of NASCAR's three national touring series (Sprint Cup, Nationwide and Camping World Truck).

"I want to thank everyone for their support through this entire process," Allmendinger said in a statement. "I appreciate that NASCAR created the Road to Recovery program and am grateful for the opportunity to return to competition. The Road to Recovery program was really helpful to me in getting my priorities reset away from the racetrack. And, honestly, that helped find my love of racing again and why I began racing in the first place. I'm looking forward to taking this experience and be better for it moving forward."

Last month, Allmendinger said he tested positive for Adderall, a drug typically prescribed for attention deficit hyperactivity disorder. Allmendinger also noted that he used the amphetamine only one time. NASCAR has a policy of not revealing the actual substance.

Allmendinger was released from Penske Racing following his indefinite suspension. However, team owner Roger Penske said this past weekend that he would consider rehiring him. Allmendinger attended last Saturday's IndyCar Series season-ending race in Fontana, CA, as a guest of Team Penske.

Last December, Allmendinger replaced Kurt Busch in Penske's No. 22 Dodge for the 2012 Sprint Cup season. Sam Hornish Jr. has been driving the No. 22 since the July 7 race at Daytona International Speedway. Joey Logano recently signed with Penske to take over driving duties of that car, starting next season.

Allmendinger became the second Sprint Cup driver to be suspended since NASCAR revised its drug policy prior to the start of the 2009 season. Jeremy Mayfield failed a drug test in May '09. Mayfield has not competed in a NASCAR race since then and has continuously lost his legal battle with NASCAR in court.