Thus, the active pit crew for a NASCAR pit stop is comprised of:
* The jackman: jacks up the car so that the tires can be replaced. The jackman will, also, usually pull the old right rear tire off of the car after the rear tire changer loosens the lug nuts. This is to help get the new right rear tire on faster. The jackman is the one who signals for the driver to leave the pits by dropping the jack.
* The front tire changer: changes only the front tires with air wrench.
* The rear tire changer: changes only rear tires with air wrench.
* The gas man: fills the car with gasoline with a special gas can. The gas man may, also, help pull old tires off of race car after lug nuts are loosened if the car does not need fuel or if the car needs little fuel and the gas man finishes his job before any one else.
* Front tire carrier: brings the new front replacement tires over the pit wall and guides them onto the studs. He, also, rolls the old front tires to the pit wall after the front tire changer pulls them off of the car. The front tire carrier is usually responsible for clearing debris off of the grill of a racecar and/or pulling the front fenders away from the tire if necessary. He may also be responsible for adding tape to the grill during a pit stop for more front-end downforce.
* Rear tire carrier: responsible for bringing new rear tires over the pit wall. Typically, on the side of the car furthest from the pit wall, he will be responsible for guiding the new tire onto the studs, making any necessary adjustments to the rear track bar and/or wedge, and rolling the old tire back to the pit wall. On the side of the car closest to the pit wall, he is usually responsible for only sliding the new tire onto the studs.
A seventh man is allowed over the wall, usually to clean the windshield, and in some situations, is permitted to attach extra dark shields to assist as the sun begins to set. Races in Atlanta Motor Speedway, and in the past, Homestead Miami Speedway, North Carolina Speedway, and Phoenix International Raceway, were known where the setting sun would lead to glare issues on the cars.