A. VEHICLE ELIGIBILITY: Competition is open to all vehicles conforming to and/or eligible to run within the Street Touring and Solo Spec Coupe National classes and CAM, Xtreme Street & Club Spec National Supplemental classes, as defined by the 2025 Solo Rules and the CAM, Xtreme Street & Club Spec Rules, which can be found here. All vehicles must also meet Safety Level 1 of the SCCA Time Trials Safety rules, found here.

B. DECALS:

  1. The Tire Rack® is the title sponsor for all 2025 SCCA® National Solo® and National Time Trial events. Participants in these events are required to run the title sponsor decal, which is a windshield decal that is to be used at the top of the windshield. Vehicles without windshields or with plastic windshields may place the decal on the front of the car in a highly visible location approved by the Event Lead. Decals other than the official Tire Rack® decal, except those required by National Tour Staff, are prohibited on the windshield.
  2. Additional required event decals are one SCCA® (on the front), 2 Tire Rack SCCA Time Trials National Tour decals (one on each side), and 2 CAM decals (one on each side), the event sponsor decals (if applicable), and the class sponsor decals (if applicable).
  3. A 2D-style barcode is used by National Solo for each competitor's helmet. This barcode should be affixed to the competitor's helmet in an accessible location for scanning at the start line. Any and all other barcodes (SCCA Regional or for other events) must be covered during the event so the National Solo barcode is the only one visible.

C. TECH PROCEDURES:

  1. Safety Inspections (Solo Rules 3.3.3) should be completed at the event site and will be completed by competitors using a Self-Tech Form.
  2. Solo Rules 3.7 Vehicle Identification will be checked. The official Tire Rack decal and tech stickers are the only decals permitted on the windshield.
  3. Drivers should come to tech with completed Tech Forms and helmets. Any vehicles with aftermarket safety, seats, harness, will also need to be brought to tech to verify proper installation. Vehicles should be "race ready" with numbers and class shown on the sides of the vehicle prior to the start of competition. Tech will provide any required decals.
  4. Competition vehicles that have a required minimum weight (CAM, XS), CSM, and CSX) will inform Tech of that weight so the weight and vehicle wheelbase can be posted on the tech sticker. This is to allow other competitors to know the declared minimum weight.

D. PENALTIES FOR INCORRECT NUMBERS OR BARCODES:

  1. Tech will confirm class, number and that helmet and helmet barcodes are compliant.
  2. Competitors at the start line with the wrong number on their car, 2 sets of numbers, or the incorrect class showing will receive a warning for the first offense, a cone penalty for the second offense, and may receive a DSQ for three or more offenses at the same event.
  3. Competitors at the scanner with more than one (1) barcode showing on the helmet will receive a warning for the first offense, a cone penalty for the second offense and may receive a DSQ for three or more offenses at the same event.
  4. A driver at the scanner or the start line without the appropriate helmet decal (Time Trials 2025) and Tech sticker will be directed away from the start/grid and the run will be scored as a DNF.

E. VEHICLES WITH MINIMUM WEIGHTS:

  1. Classes that have minimum weights may be weighed at the Event Lead or Competition Directors discretion. It is the competitors’ responsibility to know if their vehicle has a minimum weight requirement.

F. SOUND POLICY: Refer to Solo Rules Rule Appendix H. Sound requirements are strictly enforced.

G. TIMING AND SCORING: Refer to Solo Rules Rule 7

  1. The total score for class competition will consist of the best-timed run from each course direction of the autocross course, combined with best-timed run from the Time Attack Session to create one time.
  2. Scores will be posted online. See the Event Lead or your group coach to resolve problems. THE TIMING & SCORING TRAILER AND RACE CONTROL IS OFF LIMITS FOR COMPETITORS, CREW, AND SPECTATORS unless invited to enter by an event official.
  3. Live timing will be available, information will be provided during check in.