Additional rules for specially marked races

4 Lanes: The Four-Wide Nationals in both Las Vegas and Charlotte in the spring will compete with cars on four lanes.

• All cars will qualify on each lane as all four lanes will be used in qualifying.
• Three rounds with cars using all four lanes.
• In Rounds One and Two, the top two drivers (of four) will advance to the next round.
• The pairings are set as follows:
  • Race One: 1, 8, 9, 16
  • Race Two: 4, 5, 12, 13
  • Race Three: 2, 7, 10, 15
  • Race Four: 3, 6, 11, 14
  • Semifinal One: Top two in Race One and Race Two
  • Semifinal Two: Top two in Race Three and Race Four
  • Finals: Top two in Semifinal One and Semifinal Two
• Lane choice determined by times in previous round. In first round, lane choice determined by fastest times.
• Drivers who advance in Rounds One and Two will receive 20 points for each round advancement.
• In Round Three, the winner of the race will be declared the race winner and will collect 40 points. The runner-up will receive 20 points. Third and fourth place drivers will be credited as semifinal losers.

1.5: The U. S. Nationals and Auto Club Finals will have their race points increased by 50% . Drivers who qualify but are eliminated in the first round receive 30 points, and each round win is worth 30 points. The top four receive 10, 9, 8, and 7 points, respectively, for qualifying positions, with the 5–6 drivers receiving 6 points, 7–8 drivers receiving 5 points, 9–12 receiving 4 points, and 13–16 receiving 3 points. Also, the top four, not three, drivers after each session receive points for fastest times in each round (4-3-2-1).

MM: Pro Stock Car at this event is a non-championship race with the Mountain Motor formula, where cars can use carburetors or electronic fuel injection, do not have an engine displacement limit, and weighs a minimum of 2,450 pounds, compared to the NHRA Pro Stock formula that features electronic fuel injection, a 500ci (8193cc) engine displacement limit, and 2,350 pounds weight.