NASCAR Rule Book: Update (May 2023)

Fire suppression, wave around, free pass and double-yellow line rules updated

NASCAR has added a set of new rules to the lengthy rule book. Of those, a second fire suppression system is now required. If the leader is involved in an accident, more cars may get the wave around. The double-yellow line for superspeedways will now be in place for both practice and qualifying.

View the new NASCAR rules below.


A “Effective June 21, 2023, the second OBFSS system must service the fuel cell area (trunk) and engine compartment.”

Leader involved in accident

H: “Prior to the Choose, if the official Race leader fails to maintain speed because of either an accident and/or mechanical failure, after the caution lights are illuminated and/or yellow flag is displayed, and a new Race leader is declared prior to pit road opening, any vehicles in front of the new Race leader may catch the tail of the field, when directed by NASCAR, as if they were ahead of the new Race leader at the time of the caution.”

“If the ‘Free Pass’ vehicle at the time of the caution and the Race leader at the time of the caution was between the Race leader when pit road is opened, a new ‘Free Pass’ vehicle will not be designated or transferred.”

“Vehicles eligible for the ‘wave around’ will be determined by the position of the lead lap vehicles when pit road is open.”

Double Yellow Line

L: “For Events at Daytona International Speedway, Talladega Superspeedway and Atlanta Motor Speedway, drivers must remain above the double lines during practice and qualifying.”

“Following completion of the practice and qualifying lap, and after exiting turn 2, driver must pull below the double lines and remain below the lines until entering pit road.”

“Drivers who impede or assist another Competitor’s practice or qualifying attempt may by subject to disciplinary action, including loss of qualifying time.”

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