Motorsport UK NCR 2026 #11 | Page 291

CHAPTER 7 COMPETITOR VEHICLES AND VEHICLE SAFETY Appendix 13- Charts and Diagrams
Chart 1 Maximum Noise Limits
The following table gives alternative distance readings.( Noise measured in dB( A).)
0.5m
2.0m
Section‘ A’
105
93
CAR RACE( SALOON AND SPORTS CARS) MAXIMUM AT 3 ⁄ 4 MAXIMUM RPM
Section‘ B’
108
96
CAR RACE( SINGLE SEATER AND SPORTS RACING CARS) MAXIMUM AT 3 ⁄ 4 MAXIMUM RPM
Section‘ C’
100
88
STAGE RALLY, AUTOTEST, TRIALS, MAXIMUM AT 4,500 RPM
Section‘ D’
98
86
ROAD RALLY MAXIMUM AT 2 ⁄ 3 MAXIMUM RPM
Section‘ E’
100
88
CROSS
CCV MAXIMUM COUNTRY AT VEHICLE 2 ⁄ 3 MAXIMUM MAXIMUM RPM AT 2 ⁄ 3 MAXIMUM RPM
Section‘ F’
108
96
AUTOCROSS AND RALLYCROSS MAXIMUM AT 3 ⁄ 4 MAXIMUM RPM
Section‘ G’
110
98
HILLCLIMB AND SPRINT MAXIMUM AT 2 ⁄ 3 MAXIMUM RPM – RACING AND SPORTS LIBRE CARS AND CARS COMPLYING WITH Ch. 14 App. 4 Art. 15
108 96
ALL OTHER CATEGORIES
Motorsport UK 2025 National Competition Rules Version 11
Chapter 7 Appendix 13- Charts and Diagrams 291