7. Noise Testing
7.1. Before the start of a Competition all Competitors’ cars and those Officials’ cars that are expected to follow a substantial part of the route must pass a sound test.
7.2. This test must be conducted by an Environmental Scrutineer using a sound meter as prescribed in the Technical Regulations at Chapters 5 and 7..
7.3. Any Vehicle reading over 98dB( A) in this test will be prohibited from starting( except in Special Stage Rallies where a level of 100dB( A) is permitted) unless the Official Documents specify lower levels.
7.4. All measurements refer to the 0.5m test in Chapter 7. Wherever practical the 2.0m test should be used for Road and Targa Road Rallies.
7.5. For Vehicles of Periods A to D there is a waiver from the requirement to use a sound meter on daytime Events but Driving Standards Observers for sound must be appointed.
7.6. The Organisers must make arrangements for a suitable testing site to be available and ensure that adequate personnel are appointed.
7.7. A further sound test of the same Vehicles must be made on any road sections and these should be manned by a Driving Standards Observer and / or Judge of Fact appointed and named in the Official Documents and qualified to carry out their duties by experience.
7.8. The DSO have the authority to stop any Vehicle until it complies with relevant sound regulations.
8. Instructions to Competitors 8.1. In addition to the requirement of Chapter 3 the Official Documents for the Event must clearly state:
a.
The type of Rally( Road / Navigational / Stage etc) that is being organised and if there will be Standard Sections, Special Stages, Regularity Sections or other types of Special Test.
b. When details of the route or any test or stage will be issued. c. Any maps required( including their scale and issue reference and any modification of App. 10 Art. 7.42). d.
e.
In any dispute concerning mileages these shall be calculated according to 1:50000 OS maps( or equivalent local maps).
Any modification of the Event Regulations in relation to Pace Notes, Subjective Route Notes or other means of giving Competitors advice relating to the traversing of a Special Stage.( App. 10 Art. 7.42)
f. The type of timing to be used. g. A reminder of which sub-sections of the Technical Regulations apply. h. Whether or not Vehicles are required to be taxed and insured for use on the public highway. i.
j.
Whether servicing is permitted and if so then the manner in which Service Vehicles must be identified by Official Service Plates affixed to the Service Vehicle.
Any information which is required in relation to checks established by the Organisers to observe maintenance of a set speed and / or time schedule and / or route.
8.2. No oral instruction to Competitors during an Event will be valid if this affects the route the time schedule or the layout or performance of a Stage or test.
8.3. Any instruction concerning these aspects must be displayed as an Official notice at least 30 minutes before the first Vehicle is due to start or issued in writing to each Competitor who must acknowledge receipt in writing. The instruction and acknowledgment are Official Documents.
9. Documentation 9.1. All documentation issued by the Organisers is deemed an Official Document under the NCR and the
Motorsport UK 2025 National Competition Rules Version 11
Chapter 13- Appendix 1- Regulations Applying to All Rallies including Public Relations and Sound Testing
437