Document ID: chunk:federal_register_of_legislation:F2021C00509:front:0:p34
Version: federal_register_of_legislation:F2021C00509
Segment Type: other
Provision Reference: 
Character Range: 98805–101888

Scope
2. Definitions
3. Application for approval
4. Markings
5. Approval
6. Specification
    7. Modification and extension of the approval of the motorcycle type or the type of exhaust or silencing system(s)
8. Conformity of Production
9. Penalties for non-conformity of production
10. Production permanently discontinued
    11. Names and addresses of technical services responsible for conducting approval tests and of administrative departments
12. Transitional provisions
ANNEXES
         Annex 1-  Communication concerning the approval (or refusal or withdrawal of approval or Production permanently discontinued) of a motor cycle type with regard to noise emitted by motor cycles pursuant to Regulation No. 41
Annex 2- Arrangements of approval marks
Annex 3- Methods and instruments for measuring the noise made by motor cycles
Annex 4- Test track specifications
Annex 5- Exhaust system (Silencer)
Annex 6- Maximum limits of sound level (new motor cycles)
Regulation No. 41

UNIFORM PROVISIONS CONCERNING THE APPROVAL OF MOTOR CYCLES WITH REGARD TO NOISE

1. SCOPE

           This Regulation contains provisions relating to the noise made by two-wheeled motor cycles other than those having a maximum design speed not exceeding 50 km/h.

2. DEFINITIONS

           For the purposes of this Regulation

           2.1. "Approval of a motor cycle" means the approval of a motor cycle type with regard to noise;

           2.2. "type of motorcycle as regards its sound level and exhaust system" means motorcycles which do not differ in such essential respects as the following:

           2.2.1. the type of engine (two-stroke or four-stroke, reciprocating piston engine or rotary-piston engine, number and capacity of cylinders, number and type of carburettors or injection systems, arrangement of valves, net maximum power and corresponding speed).
           For rotary-piston engines the cubic capacity should be taken to be double of the volume of the chamber;

2.2.2. transmission system, in particular the number and ratios of the gears;

2.2.3. number, type and arrangement of exhaust systems.

           2.3. "Exhaust or silencing system" means a complete set of components necessary to limit the noise caused by a motorcycle engine and its exhaust.

           2.3.1. "Original exhaust or silencing system" means a system of a type fitted to the vehicle at the time of type-approval or extension of type-approval. It may be original or a replacement.

           2.3.2. "Non-original exhaust or silencing system" means a system of a type other than that fitted to the vehicle at the time of type-approval or extension of type-approval. It may be used only as a replacement exhaust or silencing system.

           2.4. "Exhaust or silencing systems of differing types" means systems which are fundamentally different in one of the following ways:

2.4.1. systems comprising components bearing different factory or trade marks;

           2.4.2. systems comprising any component made of materials of different characteristics or comprising components which are of a