Beaux Barfield has quit as IndyCar's race director after three years in the post, and will join sanctioning body International Motor Sports Association as its race director for the TUDOR United SportsCar Championship and Continental Tire Challenge.

That effectively reinstates Barfield to the position he held from 2008 until 2011 before joining IndyCar, when he was race director for the American Le Mans Series prior to its merger with the Grand-Am championship.

Before that, Barfield was a Champ Car steward from 2003-08, during which time he was race director of Champ Car's Atlantic and Trans Am series. He also was chief steward for the USF2000 National Championship from 2001-03.

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Barfield was brought in as chief steward by IndyCar's then-CEO Randy Bernard to oversee the on-track product, enforcing rules and procedural issues. He took over from Brian Barnhart, who in the previous year had run into heavy criticism from IndyCar drivers and teams after a tempestuous season.

Barfield's first year in the post was also not without its ups and downs, but a move to a three-person officiating committee in 2014 helped smooth over the disagreements this season. However Barfield is said to have become unhappy with having his position as race director diluted by the new system, referring to decision making by committee as "a very archaic way of officiating" and resulting in unclear messaging

At IMSA, Barfield will be a member of the new team under the direction of Simon Hodgson, who has been named managing director of racing operations. Barfield will be able to function as the sole autonomous race director making officiating calls during the event with the support of the management. His first race in his new position will be at Circuit of the Americas on September 20.

The Verzon IndyCar Series issued a statement thanking Barfield for his work over the last two years, which has included overhauling the series rule book and overseeing the introduction of double-header events and double points for the Triple Crown oval races to the series.

"IndyCar would like to thank Beaux Barfield for his contributions to the Verizon IndyCar Series during the past three seasons and we wish him all the best as he assumes his new position with IMSA," said the series management.

"IndyCar's on-track product showcases extremely competitive and compelling racing and we look forward to identifying a race director that will take the Verizon IndyCar Series to an even higher level starting in 2015."

It's not clear whether IndyCar will look outside to fill the post, or whether it will recruit from the existing pool of names that have been assisting Barfield during the 2014 season which includes Barnhart, Jon Beekhuis, Johnny Unser, Arie Luyendyk and Tony Cotman.

The IndyCar Series will be able to take its time making the decision, as the championship is now on hiatus until the end of next March following the 2014 season finale last weekend at Auto Club Speedway in Fontana, California which saw Team Penske's Will Power finally clinch his first title.