Regulation No. 63-02

Name:Regulation No. 63-02
Description:Noise - Mopeds.
Official Title:Uniform Provisions Concerning the Approval of Two-wheeled Mopeds with Regard to Noise.
Country:ECE - United Nations
Date of Issue:2013-12-02
Amendment Level:02 Series, Supplement 3
Number of Pages:37
Vehicle Types:Motorcycle
Subject Categories:Noise
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Keywords:

vehicle, test, sound, regulation, approval, type, exhaust, engine, speed, paragraph, system, surface, annex, level, amendments, requirements, series, measured, silencing, maximum, vehicles, measurements, reference, measurement, date, track, mass, microphone, force, measuring, pressure, entry, number, area, figure, voids, conditions, manufacturer, fuel, granted, made, rated, tests, absorption, mark, fitted, point, means, line, content

Text Extract:

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E/ECE/324
) Rev.1/Add.62/Rev.1./Amend.3
E/ECE/TRANS/505 )
December 6, 2017
STATUS OF UNITED NATIONS REGULATION
ECE 63-02
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
L CATEGORY VEHICLES WITH REGARD TO SOUND EMISSION
Incorporating:
00 series of amendments
Date of Entry into Force: 15.08.85
01 series of amendments
Date of Entry into Force: 08.03.99
Corr. 1 to the 01 series of amendments
Dated: 23.06.99
Corr. 2 to the 01 series of amendments
Dated: 05.06.01
Supplement 1 to the 01 series of amendments
Date of Entry into Force: 10.10.06
02 series of amendments
Date of Entry into Force: 03.11.13
Supplement 1 to the 02 series of amendments
Date of Entry into Force: 20.01.16
Supplement 2 to the 02 series of amendments
Date of Entry into Force: 09.02.17
Supplement 3 to the 02 series of amendments
Date of Entry into Force: 10.10.17

REGULATION NO. 63-02
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF
L CATEGORY VEHICLES WITH REGARD TO SOUND EMISSION
CONTENTS
REGULATION
1. Scope
2. Definitions
3. Application for Approval
4. Markings
5. Approval
6. Specifications
7. Modification and Extension of the Approval of the Vehicle or of the Type of Exhaust or
Silencing System(s)
8. Conformity of Production
9. Penalties for Non-conformity of Production
10. Transitional Provisions
11. Production Definitively Discontinued
12. Names and Addresses of Technical Services Responsible for Conducting Approval Tests,
and of Type Approval Authorities
ANNEXES
Annex 1 – Communication
Annex 2 – Arrangements of Approval Marks
Annex 3 – Methods and Instruments for Measuring the Sound Emitted by L Category Vehicles
Annex 4 – Maximum Sound Level Limits (New Vehicles)
Annex 5 – Test Track Specifications

2.7. "Rated engine speed" means the engine speed at which the engine develops its rated
maximum net power as stated by the manufacturer .
The symbol n denotes the rated engine speed expressed in min
2.8. "Silencing systems of different types" means silencing systems which differ in such
essential respects as:
2.8.1. That their components bear different trade names or marks;
2.8.2. That the characteristics of the materials constituting a component are different or that the
components differ in shape or size;
2.8.3. That the operating principles of at least one component are different;
2.8.4. That their components are assembled differently;
2.9. "Exhaust system component" means one of the individual constituent parts which, when
assembled, constitute the exhaust system (e.g. exhaust pipes, silencer) and, where
applicable, the intake device (air filter).
If the engine is fitted with an intake device (air filter and/or an intake noise absorber
essential in order to ensure conformity with sound level limits), this device shall be
considered to be a component of the same importance as the exhaust system proper, and
be included in the list referred to in Paragraph 3.2.2. below and carry the markings
prescribed in Paragraph 4.1. below.
2.10. Reference Mass
2.10.1. The reference mass of an L Category vehicle shall be determined by measuring the mass
of the unladen vehicle ready for normal use and shall include the mass of:
(a)
(b)
(c)
Liquids;
Standard equipment in accordance with the manufacturer's specifications;
'Fuel' in the fuel tanks that shall be filled to at least 90% of their capacities.
For the purposes of this point:
(i)
(ii)
If a vehicle is propelled with a 'liquid fuel' this shall be considered as 'fuel';
If a vehicle is propelled with a liquid 'fuel/oil mixture':
a. If fuel to propel the vehicle and lubrication oil are pre-mixed then this
'pre-mixture' shall be considered as 'fuel',
b. If fuel to propel the vehicle and lubrication oil are stored separately then
only 'fuel' propelling the vehicle shall be considered as 'fuel'; or
(iii)
If a vehicle is propelled by a gaseous fuel, a liquefied gaseous fuel or is running
on compressed air, the mass of 'fuel' in the gaseous fuel tanks may be set to
0kg;
(d)
(e)
The bodywork, the cabin, the doors;
The glazing, the coupling, the spare wheels as well as the tools.

4. MARKINGS
4.1. The components of the exhaust or silencing system shall bear at least the following
identifications:
4.1.1. The trade name or mark of the manufacturer of the exhaust or silencing system and of its
components;
4.1.2. The trade description given by the manufacturer.
4.1.3. The identifying part numbers; and
4.1.4. For all original silencers, the "E" mark followed by the identification of the country which
granted the component type approval.
4.1.5. Any packing of original replacement exhaust or silencing systems shall be marked legibly
with the words "original part" and the make and type references integrated together with the
"E" mark and also the reference to the country of origin.
4.1.6. Such markings shall be indelible, clearly legible and visible, in the position on which it is to
be located on the vehicle.
5. APPROVAL
5.1. If the vehicle submitted for approval pursuant to Paragraph 3 of this Regulation meets the
requirements of Paragraph 6 and 7 below, approval of that vehicle type with regard to the
sound emission shall be granted.
5.2. An approval number shall be assigned to each type approved. Its first two digits shall indicate
the series of amendments (at present 02) incorporating the most recent major technical
amendments made to the Regulation at the time of issue of the approval. The same
Contracting Party may not assign the same number to the same vehicle type equipped with
another type of exhaust or silencing system, or to another vehicle type.
5.3. Notice of approval or of refusal of approval of a vehicle type pursuant to this Regulation
shall be communicated to the Parties to the Agreement which apply this Regulation, by
means of a form conforming to the model in Annex 1 to this Regulation and of drawings of
the exhaust or silencing system supplied by the applicant for approval, in a format not
exceeding A4 (210 × 297mm) or folded to that format and on an appropriate scale.
5.4. There shall be affixed, conspicuously and in a readily accessible place specified on the
approval form, to every vehicle conforming to a vehicle type approved under this Regulation
an international approval mark consisting of:
5.4.1. A circle surrounding the letter "E" followed by the distinguishing number of the country which
has granted approval;
5.4.2. The number of this Regulation, followed by the letter "R", a dash and the approval number
to the right of the circle prescribed in Paragraph 5.4.1. above

6.3. Additional Requirements
6.3.1. Tampering Protection Provisions
All exhaust or silencing systems shall be constructed in a way that does not permit removal
of baffles, exit-cones and other parts whose primary function is as part of the
silencing/expansion chambers. Where incorporation of such a part is unavoidable, its
method of attachment shall be such that removal is not facilitated (e.g. with conventional
threaded fixings) and should also be attached so that removal causes
permanent/irrecoverable damage to the assembly.
6.3.2. Multi-mode Exhaust or Silencing Systems
Exhaust or silencing systems with multiple, manually or electronically adjustable rider
selectable operating modes shall meet all requirements in all operating modes. The reported
sound levels shall be those resulting from the mode with the highest sound levels.
6.3.3. Prohibition of Defeat Devices
The vehicle manufacturer shall not intentionally alter, adjust, or introduce any device or
procedure solely for the purpose of fulfilling the sound emission requirements of this
Regulation, which will not be operational during typical on-road operation
7. MODIFICATIONS AND EXTENSION OF THE APPROVAL OF THE VEHICLE TYPE OR
OF THE TYPE OF EXHAUST OR SILENCING SYSTEM(S)
7.1. Every modification of the vehicle type or of the exhaust or silencing system shall be notified
to the Type Approval Authority which approved the vehicle type. The said Authority may
then either:
7.1.1. Consider that the modifications made are unlikely to have appreciable adverse effects; or
7.1.2. Require a further test report from the Technical Service responsible for conducting the tests.
7.2. Confirmation or refusal of approval, specifying the alterations, shall be communicated by the
procedure specified in Paragraph 5.3. of this Regulation to the Parties to the Agreement
which apply this Regulation.
7.3. The Type Approval Authority which issued the approval extension shall assign a serial
number to the extension and shall so notify the other Parties to the 1958 Agreement
applying this Regulation, by means of a communication form conforming to the model in
Annex 1 to this Regulation.
8. CONFORMITY OF PRODUCTION
The conformity of production procedures shall comply with those set out in the Agreement,
Appendix 2 (E/ECE/324-E/ECE/TRANS/505/Rev.2), with the following requirements:
8.1. Every vehicle bearing an approval mark as prescribed under this Regulation shall conform
to the vehicle type approved, be fitted with the exhaust or silencing system with which it was
approved and satisfy the requirements of Paragraph 6. above.

10.8. As from 60 months after the date of entry into force of Supplement 1 to the 02 series of
amendments to this Regulation, Contracting Parties applying this Regulation shall grant type
approvals only if the vehicle type to be approved meets the requirements of this Regulation
as amended by Supplement 1 to the 02 series of amendments to this Regulation.
11. PRODUCTION DEFINITIVELY DISCONTINUED
If the holder of the approval completely ceases production of a type of vehicle approved in
accordance with this Regulation, he shall so inform the Type Approval Authority which
granted the approval, which in turn shall notify the other Parties to the 1958 Agreement
applying this Regulation, by means of a copy of the communication form conforming to the
model in Annex 1 to this Regulation.
12. NAMES AND ADDRESSES OF TECHNICAL SERVICES CONDUCTING APPROVAL
TESTS AND OF TYPE APPROVAL AUTHORITIES
The Parties to the Agreement which apply this Regulation shall communicate to the United
Nations Secretariat the names and addresses of the Technical Services responsible for
conducting approval tests and of the Type Approval Authorities which grant approval and to
which forms certifying approval or extension or refusal or withdrawal of approval or
production definitely discontinued, issued in other countries, are to be sent.

11. Cylinder capacity ................................................................................................................ cm
11.1. Bore: ..................................................................................................................................... mm
11.2. Stroke: .................................................................................................................................. mm
12. Rated maximum net power (state how measured): ............................................................. kW
13. Rated engine speed at which maximum power is developed: ........................................... min
14. Transmission: .............................................................................................................................
14.1. Make: ........................................................................................................................................
14.2. Type (manual, automatic, CVT): ...............................................................................................
14.3. Number of gears: ......................................................................................................................
14.4. Gears used .................................................................................................................................
14.5. Final drive ratio(s) ......................................................................................................................
15. Type and dimensions of tyres ....................................................................................................
16. Maximum permissible gross weight ....................................................................................... kg
17. Maximum design vehicle speed (as indicated by the manufacturer) ................................. km/h
18. For stationary vehicle test: location and orientation of the microphone (by reference to
diagrams in Annex 3 to this Regulation) ....................................................................................
19. Sound Levels: ............................................................................................................................
Vehicle in motion: .............................................................................................................. dB(A)
At approach vehicle speed (Line A-A') of: .......................................................................... km/h
Rotation speed of the engine: ............................................................................................ min
Vehicle stationary: ............................................................................................................. dB(A)
With engine running at: ...................................................................................................... min
20. In use compliance reference data
20.1. Gear (i) for vehicles with manual transmission: ...............................................
20.2. Vehicle speed at the beginning of the period of acceleration (average of three runs) for
gear (i): ............................................................................................................................. km/h
20.3. Sound pressure level L : ............................................................................................ dB(A)
21. Vehicle submitted for approval on: .............................................................................................

ANNEX 2
ARRANGEMENTS OF APPROVAL MARK
Model A
(See Paragraph 5.4 of this Regulation)
a = 8mm min
The above approval mark affixed to a vehicle shows that the vehicle type concerned has, with regard to
its sound emission, been approved in the Netherlands (E 4) pursuant to UN Regulation No. 63 under
approval No. 022439. The approval number indicates that the approval was granted according to the
requirements of UN Regulation No. 63 as amended by the 02 series of amendments.
Model B
(See Paragraph 5.5 of this Regulation)
a = 8mm min
The above approval mark affixed to a vehicle shows that the vehicle type concerned has been approved
in the Netherlands (E 4) pursuant to UN Regulation Nos. 63 and 33. The approval numbers indicate
that, at the dates when the respective approvals were given, UN Regulation No. 63 included the 02
series of amendments and UN Regulation No. 33 has also been amended by the 01 series of
amendments.

1.5. Meteorological Instrumentation
The meteorological instrumentation used to monitor the environmental conditions during the
test shall meet the following specifications:
±1°C or less for a temperature measuring device;
±1.0m/s for a wind speed measuring device;
±5hPa for a barometric pressure measuring device;
±5% for a relative humidity measuring device.
2. CONDITIONS OF MEASUREMENT
2.1. Test Site, Weather Conditions and Background Noise Correction
2.1.1. Test Site
The test site shall consist of a central acceleration track surrounded by a substantially level
test area. The test track shall be level; the track surface shall be dry and so designed that
rolling sound remains low.
On the test site, free sound field conditions shall be maintained to within ±1dB between the
sound source placed in the middle of the acceleration section and the microphone. This
condition shall be deemed to be met if there are no large sound reflecting objects such as
hedges, rocks, bridges or buildings within 50m of the centre of the acceleration section.
No obstacle likely to affect the sound field shall be close to the microphone and no one shall
come between the microphone and the sound source. The observer taking the
measurements shall take up position so as to avoid influencing the metre readings.
The surface of the test track shall conform to the requirements of Annex 5 to this Regulation
or be in accordance to ISO 10844:2014. After the end of the period indicated in Paragraph
10.8. of this Regulation only ISO 10844:2014 shall be used as reference.
2.1.2. Weather Conditions and Background Noise Correction
Measurements shall not be made in poor weather conditions. The tests shall not be carried
out if the wind speed, including gusts, exceeds 5m/s during the sound measurement
interval.
For measurement purposes, the weighted sound-level (A) of sound sources on the test
vehicle and the sound-level produced by the effect of the wind shall be at least 10dB(A)
below the sound level produced by the vehicle. The microphone may be fitted with a
suitable wind guard, provided that its influence on the sensitivity and directional
characteristics of the microphone are taken into account.
If the difference between ambient noise and measured sound levels is between 10 and
15dB(A), the appropriate correction shall be subtracted from the readings on the sound level
meter, as given in Table 1.

3.
METHODS OF TESTING
3.1.
Measurement of the Sound Emission of the Vehicle in Motion
3.1.1.
Test Arrangement and Microphone Positions
3.1.1.1.
The test arrangement is shown in Figure 1.
Figure 1
Measuring Positions for Vehicles in Motion
Two lines, AA' and BB', parallel to the microphone line PP' and situated respectively 10m
forward and 10m rearward of that line shall be marked out on the test track.
3.1.1.2. The distance of the microphone positions from the line CC', on the microphone line PP',
perpendicular to the reference line CC' on the test track (see appendix, Figure 1), shall be
7.5 ± 0.05m.
The microphones shall be located 1.2 ± 0.02m above the ground level. The reference
direction for free-field conditions (see IEC 61672-1:2013) shall be horizontal and directed
perpendicularly towards the path of the vehicle line CC'.

3.2. Measurement of Sound Emitted by Stationary Vehicles (Conditions and Method of
Measurement for Testing Vehicles in Use).
In addition, in order to facilitate subsequent testing of vehicles in service, the sound
pressure level shall be measured close to the outlet of the exhaust (silencing) system, in
accordance with the following requirements, and the reading shall be recorded in the test
report prepared for the issue of the document referred to in Annex 1 to this Regulation.
The measurements shall be made using a precision sound level meter conforming to the
requirements of Paragraph 1 of Annex 3 to this Regulation.
3.2.1. Test Site - Local Conditions
3.2.1.1. Measurements shall be made on a stationary vehicle in an area which does not present a
great deal of disturbance to the sound field.
3.2.1.2. Every open space shall be considered as a suitable test site if it consists of a flat area
covered with concrete, asphalt or some other hard material having a high reflective capacity,
excluding compressed or other earth surfaces, in which one can trace a rectangle whose
sides are at least 3m from the extremities of the vehicle and inside which there is no
noticeable obstacle; in particular, the vehicle shall not be positioned at a distance of less
than 1m from a pavement edge when the exhaust noise is measured.
3.2.1.3. Nobody shall be in the measurement area, except the observer and the driver, whose
presence shall have no influence on the meter reading.
3.2.2. Disturbance Noise and Wind Interference
The ambient noise levels at each measuring point shall be at least 10dB(A) below the levels
measured during the tests at the same points.
3.2.3. Measuring Method
3.2.3.1. Nature and Number of Measurements
The maximum sound level expressed in A-weighted decibels (dB(A)) shall be measured
during the period of operation laid down in Paragraph 3.2.3.3.2.1. below.
At least three measurements shall be taken at each measuring point.
3.2.3.2. Position and Preparation of the Vehicle
Before the measurements are started, the engine of the vehicle shall be brought to its
normal operating temperature. If the vehicle is equipped with automatic fans, no adjustment
shall be made to them during the measurement of the sound level.
While measurements are being made, the gear lever shall be in neutral. If the transmission
cannot be disconnected, the drive wheel of the vehicle should be allowed to run under
no-load conditions by, for example, placing the vehicle on its stand.

Figure 2
Measuring Positions for the Measurement of Sound of the Stationary Vehicles

3.2.3.3.3. Result
3.2.3.3.3.1. Measurements shall be made at the microphone location(s) prescribed above. The
maximum A-weighted sound pressure level indicated during the test shall be noted,
retaining one significant figure behind the decimal place (e.g. 92.45 shall be noted as to
92.5 while 92.44 shall be noted as to 92.4). The test shall be repeated until three
consecutive measurements that are within 2.0dB(A) of each other are obtained at each
outlet.
The test result for a given outlet is the arithmetic average of the three valid measurements,
mathematically rounded to the nearest integer value (e.g. 92.5 shall be noted as to 93 while
92.4 shall be noted as to 92).
3.2.3.3.3.2. For vehicles equipped with multiple exhaust outlets, the reported sound pressure level shall
be for the outlet having the highest average sound pressure level.
3.2.3.3.3.3. For vehicles equipped with a multi-mode exhaust system and a manual or electronic
exhaust mode control the reported sound pressure level shall be for the mode having the
highest average sound pressure level.
4. SOUND FROM THE VEHICLE IN MOTION (DATA REPORTED TO FACILITATE IN
MOTION TESTING OF THE VEHICLE IN USE).
4.1. A test procedure for in use compliance tests may be defined by a Contracting Party, taking
due account of any differences from the test conditions used at type approval.
4.2. In order to facilitate in use compliance test of vehicles, the following information relating to
the sound pressure level measurements carried out in accordance with Paragraph 3.1 of
Annex 3 for the vehicle in motion is referred to as in use compliance reference data:
(a)
Gear (i) or, for vehicles tested with non-locked gear ratios, the position of the gear
selector chosen for the test;
(b) The vehicle speed v in km/h at the beginning of the maximum speed or full throttle
acceleration test in gear (i); and
(c)
The final test result in dB(A) as determined according to Paragraph 3.1.4 of this
Annex.
4.3. The in use compliance reference data shall be entered in the communication form
conforming to Annex 1.
5. ORIGINAL EXHAUST (SILENCING) SYSTEM
5.1. Requirements for Silencers Containing Absorbent Fibrous Materials.
5.1.1. Fibrous absorbent material shall be asbestos-free and may be used in the construction of
silencers only if suitable devices ensure that the fibrous absorbent material is kept in place
for the whole time that the silencer is being used and it meets the requirements of any one
of Paragraphs 5.1.2., 5.1.3., 5.1.4. or 5.1.5. below.
5.1.2. After removal of the fibrous material, the sound level shall conform to the requirements of
Annex 4 to this Regulation.

1.
Inlet flange or sleeve for connection to the rear of the test exhaust system.
2.
Hand-operated regulating valve.
3.
Compensating reservoir with a maximum capacity of 40L and a filling time of not less
than 1s.
4.
Pressure switch with an operating range of 5 to 250kPa.
5.
Time delay switch.
6.
Pulse counter.
7.
Quick-acting valve, such as exhaust brake valve 60mm in diameter, operated by a
pneumatic cylinder with an output of 120N at 400kPa. The response time, both when
opening and closing, shall not exceed 0.5s.
8.
Exhaust gas evacuation.
9.
Flexible pipe.
10.
Pressure gauge
Figure 4
Test Apparatus for Conditioning by Pulsation
5.1.4.2.3. The valve shall open when the exhaust gas back-pressure, measured at least 100mm
downstream of the intake flange, reaches a value of between 35 and 40kPa. Should such a
figure be unattainable because of the engine characteristics, the valve shall open when the
gas back-pressure reaches a level equivalent to 90% of the maximum that can be measured
before the engine stops. It shall close when this pressure does not differ by more than 10%
from its stabilized value with the valve open.
5.1.4.2.4. The time-delay switch shall be set for the duration of exhaust gases calculated on the basis
of the requirements of Paragraph 5.1.4.2.3. above.
5.1.4.2.5. The engine speed shall be 75% of the rated engine speed as defined in Paragraph 2.7. of
this Regulation.
5.1.4.2.6. The power indicated by the dynamometer shall be 50% of the full-throttle power measured
at 75% of the rated engine speed as defined in Paragraph 2.7. of this Regulation.

5.2. Diagram and Markings
5.2.1. The diagram and a dimensioned cross section of the silencer shall be annexed to the
documents mentioned in Annex 1 to this Regulation.
5.2.2. All original silencers shall bear at least the following:
(a)
(b)
(c)
the 'E' mark followed by the reference to the country which granted the type approval;
the vehicle manufacturer's name or trademark; and
the make and identifying part number.
This reference shall be legible, indelible and visible in the position at which it is to be fitted.
5.2.3. Any packaging of original replacements for exhaust or silencing systems shall be marked
legibly with the words "original part" and the make and type reference integrated together
with the "E" mark and also the reference of the country of origin.
5.3. Intake Silencers
If the engine intake has to be fitted with an air filter and/or intake silencer in order to comply
with the permissible sound level, the filter and/or silencer shall be regarded as part of the
silencer and the requirements of Paragraphs 5.1. and 5.2. above shall also be applicable to
them.

ANNEX 5
TEST TRACK SPECIFICATIONS
1. INTRODUCTION
This annex describes the specifications relating to the physical characteristics and the laying of
the test track. These specifications, based on a special standard, describe the required
physical characteristics as well as the test methods for these characteristics.
2. REQUIRED CHARACTERISTICS OF THE SURFACE
A surface is considered to conform to this standard provided that the texture and voids content or
sound absorption coefficient have been measured and found to fulfil all the requirements of
Paragraphs 2.1. to 2.4. below and provided that the design requirements (Paragraph 3.2. below)
have been met.
2.1. Residual Voids Content
The residual voids content V , of the test track paving mixture shall not exceed 8%. For the
measurement procedure, see Paragraph 4.1. below.
2.2. Sound Absorption Coefficient
If the surface fails to conform to the residual voids content requirement, the surface is acceptable
only if its sound absorption coefficient, α, ≤0.10. For the measurement procedure, see
Paragraph 4.2. below. The requirements of this paragraph and Paragraph 2.1. above are met
also if only sound absorption has been measured and found to be α ≤0.10.
Note: The most relevant characteristic is the sound absorption, although the residual voids
content is more familiar among road constructors. However, sound absorption needs to be
measured only if the surface fails to comply with the voids requirement. This is because
the latter is connected with relatively large uncertainties in terms of both measurements
and relevance and some surfaces therefore may be rejected erroneously when the voids
measurement only is used as a basis.
2.3. Texture Depth
The texture depth (TD) measured according to the volumetric method (see Paragraph 4.3.
below) shall be:
2.4. Homogeneity of the Surface
TD ≥ 0.4mm
Every practical effort shall be made to ensure that the surface is made to be as homogeneous as
possible within the test area. This includes the texture and voids content, but it should also be
observed that if the rolling process results in more effective rolling at some places than at others,
the texture may be different and unevenness causing bumps may also occur.

3.2. Design and Preparation of the Surface
Figure 1
Minimum Requirements for Test Surface Area.
The Shaded Part is the "Test Area"
3.2.1. Basic Design Requirements; The test surface shall meet four design requirements:
3.2.1.1. It shall be a dense asphaltic concrete;
3.2.1.2. The maximum chipping size shall be 8mm (tolerances allow from 6.3 to 10mm);
3.2.1.3. The thickness of the wearing course shall be ≥30mm;
3.2.1.4. The binder shall be a straight penetration grade bitumen without modification.

(f) The binder hardness expressed as PEN value shall be 40-60, 60-80 or even 80-100
depending on the climatic conditions of the country. The rule is that, as hard a binder as
possible shall be used, provided this is consistent with common practice;
(g)
The temperature of the mix before rolling shall be chosen so as to achieve by
subsequent rolling the required voids content. In order to increase the probability of
satisfying the specifications of Paragraphs 2.1. to 2.4. of this Annex, the compactness
shall be studied not only by an appropriate choice of mixing temperature, but also by an
appropriate number of passings and by the choice of compacting vehicle.
4. TEST METHOD
Quantity
Table 1
Design Guidelines
By total
mass of mix
Target values
By mass of
the
aggregate
Tolerances
Mass of stones, square mesh sieve (SM) >2mm 47.6% 50.5% ±5
Mass of sand 0.063 Mass of filler SM <0.063mm 8.8% 9.3% ±2
Mass of binder (bitumen) 5.8% N.A. ±0.5
Maximum chipping size 8mm 6.3 – 10
Binder hardness (see Paragraph 3.2.2.(f)) –
Polished stone value (PSV) >50 –
Compactness, relative to Marshall compactness 98% –
4.1. Measurement of the Residual Voids Content
For the purpose of this measurement, cores have to be taken from the track in at least four
different positions which are equally distributed in the test area between Lines AA and BB
(see Figure 1). In order to avoid inhomogeneity and unevenness in the wheel tracks, cores
should not be taken in wheel tracks themselves, but close to them. Two cores (minimum)
should be taken close to the wheel tracks and one core (minimum) should be taken
approximately midway between the wheel tracks and each microphone location.
If there is a suspicion that the condition of homogeneity is not met (see Paragraph 2.4.of this
Annex), cores shall be taken from more locations within the test area. The residual voids
content has to be determined for each core, then the average value from all cores shall be
calculated and compared with the requirement of Paragraph 2.1. of this Annex. In addition, no
single core shall have a voids value which is higher than 10%. The test surface constructor is
reminded of the problem which may arise when the test area is heated by pipes or electrical
wires and cores must be taken from this area. Such installations shall be carefully planned with
respect to future core drilling locations. It is recommended that a few locations of size
approximately 200 × 300mm should be left where there are no wires/pipes or where the latter
are located deep enough in order not to be damaged by cores taken from the surface layer.

6. DOCUMENTATION OF THE TEST SURFACE AND OF TESTS PERFORMED ON IT
6.1. Documentation of the Test Surface
The following data shall be given in a document describing the test surface:
6.1.1. The location of the test track.
6.1.2. Type of binder, binder hardness, type of aggregate, maximum theoretical density of the
concrete (D ), thickness of the wearing course and grading curve determined from cores from
the test track.
6.1.3. Method of compaction (e.g. type of roller, roller mass, number of passes).
6.1.4. Temperature of the mix, temperature of the ambient air and wind speed during laying of the
surface.
6.1.5. Date when the surface was laid and name of the contractor.
6.1.6. All test results or at least the latest test result, including:
6.1.6.1. The residual voids content of each core.
6.1.6.2. The locations in the test area from where the cores for voids measurements have been taken.
6.1.6.3. The sound absorption coefficient of each core (if measured). Specify the results both for each
core and each frequency range as well as the overall average.
6.1.6.4. The locations in the test area from where the cores for absorption measurement have been
taken.
6.1.6.5. Texture depth, including the number of tests and standard deviation.
6.1.6.6. The institution responsible for the tests according to Paragraphs 6.1.6.1. and 6.1.6.2. above
and the type of equipment used.
6.1.6.7. Date of the test(s) and date when the cores were taken from the test track.
6.2. Documentation of Vehicle Sound Tests Conducted on the Surface
In the document describing the vehicle sound test(s) it should be stated whether all the
requirements of this standard were fulfilled or not. Reference shall be given to a document
according to Paragraph 6.1. above describing the results which verify this.
Noise - Mopeds.