Red flag at IndyCar practice as workers walk on Texas track

"IndyCar officials had to throw a red flag to slow the cars as they were pulling out of the pit area during Saturday's practice when three workers were spotted on the hot track. No one was injured."

"The television broadcast showed the trio of workers who appeared to be part of a catering crew. One of them was pushing a catering cart in a spot between AT&T Stadium, the Cowboys' home, and a nearby hospitality area."

During Saturday's practice for the inaugural Grand Prix of Arlington, IndyCar officials deployed a red flag to slow vehicles exiting the pit area after spotting three workers on the temporary 2.73-mile circuit. The workers, identified as part of a catering crew, were positioned between AT&T Stadium and a hospitality area, with one pushing a catering cart. No injuries occurred during the incident. Officials inspected the track before practice resumed after a several-minute delay. The cars had not yet reached full speed when the track breach was discovered.

Read at ESPN.com