Car Numbers and Class Designations

3.7 VEHICLE IDENTIFICATION
All cars must have car numbers and class letters on both sides. Car numbers will be a minimum of eight inches high and a minimum of 1 1/4 inch stroke. Class letters must be between 25% and 50% of the number size, no smaller than 3 inches high, and located adjacent to the numbers. All numbers and letters must be of the same single color and typeface, and in contrast to the background color. Contrast may also be obtained using a second color for a border or field, sized at least 25% of the number stroke. All letters and numbers must be on body panels, not on windows, and only one set of numbers may be visible while the car is running. For cars entered in a Ladies' Class the letter "L" shall follow the class letters (example: ASL).

Car Numbers
  • Numbers 8" high (0,1,2,3,4,5,6,7,8,9)

Car Classes

STREET CATEGORY AS BS CS DS ES FS GS HS SS
STREET PREPARED CATEGORY ASP BSP CSP DSP ESP FSP
PREPARED CATEGORY XP BP CP DP EP FP GP
MODIFIED CATEGORY AM BM CM DM EM FM
STREET MODIFIED CATEGORY SM SM2
STREET TOURING CATEGORY STS STX STU STS2
FORMULA CATEGORY F125 FJR
SPECIAL CATEGORY Ladies Novice