1974L0483 — EN — 26.04.1979 — 001.001 — 1
This document is meant purely as a documentation tool and the institutions do not assume any liability for its contents
►B COUNCIL DIRECTIVE
of 17September 197 4
on the approximation of the laws of the Member States relating to the external projections of motor
vehicles
(74/483/EEC)
(OJ L 266, 2.10.1974, p. 4)
Amended by:
Official Journal
No page date
►M1 Commission Directive 79/488/EEC of 18 April 1979 L 128 1 26.5.1979
▼B
COUNCIL DIRECTIVE
of 17September 197 4
on the approximation of the laws of the Member States relating to
the external projections of motor vehicles
(74/483/EEC)
THE COUNCIL OF THE EUROPEAN COMMUNITIES,
Having regard to the Treaty establishing the European Economic
Community, and in particular Article 100 thereof;
Having regard to the proposal from the Commission;
Having regard to the Opinion of the European Parliament (1);
Having regard to the Opinion of the Economic and Social Committee;
Whereas the technical requirements which motor vehicles must satisfy
pursuant to national laws relate, inter alia , to external projections;
Whereas those requirements differ from one Member State to another;
whereas it is therefore necessary that all Member States adopt the samerequirements either in addition to or in place of their existing rules inorder, in particular, to allow the EEC type-approval procedure whichwas the subject of Council Directive No 70/156/EEC (
2) of 6 February
1970 on the approximation of the laws of the Member States relating to
the type-approval of motor vehicles and their trailers to be applied inrespect of each type of vehicle;
Whereas it is desirable to adopt certain technical requirements adopted
by the UN Economic Commission for Europe in its Regulation No 26
(‘Uniform provisions concerning the approval of vehicles with regard totheir external projections’) (
3), annexed to the Agreement of 20 March
1958 concerning the adoption of uniform conditions of approval andreciprocal recognition of approval for motor vehicle equipment and
parts;
Whereas these requirements apply to motor vehicles of category M1 (the
international classification of motor vehicles is given in Directive No 70/156/EEC);
Whereas the approximation of national laws relating to motor vehicles
entails reciprocal recognition by Member States of inspection carried outby each of them on the basis of common requirements; whereas, such a
system must, if it is to function smoothly, be applied by all Member
States with effect from the same date,
HAS ADOPTED THIS DIRECTIVE:
Article 1
For the purposes of this Directive, ‘vehicle’ means any motor vehicle of
class M1 (defined in Annex I of Directive No 70/156/EEC) designed foruse on the road, having at least four wheels and a maximum design
speed exceeding 25 km/h.
Article 2
No Member State may, on grounds relating to external projections,
refuse to grant EEC type-approval or national type-approval for a motor1974L0483 — EN — 26.04.1979 — 001.001 — 2
(1) OJ No C 55, 13. 5. 1974, p. 14.
(2) OJ No L 42, 23. 2. 1970, p. 1.
(3) Economic Commission for Europe document
E/ECE/324/C148/C147/C147/C147/C149/C147/C147/C147/C150Rev. 1 Add. 25.E/ECE/TRANS/505▼M1
▼M1
vehicle, or for luggage racks, ski racks or radio receiving or transmitting
aerials considered as separate technical units, if:
— the vehicle complies with the provisions of Annexes I and II as
regards external projections,
— the luggage racks, ski racks or radio receiving or transmitting aerials
considered as separate technical units within the meaning of Article9a of Directive 70/156/EEC comply with the provisions of Annex I.
Article 3
1. No Member State may, on grounds relating to external projections,
refuse to register or prohibit the sale, entry into service or use of anyvehicle provided that the external projections comply with theprovisions of Annexes I and II.
2. No Member State may, on grounds relating to external projections,
prohibit the placing on the market of any luggage rack, ski rack or radio
receiving or transmitting aerial considered as separate technical unitswithin the meaning of Article 9a of Directive 70/156/EEC if it conformsto a type for which type-approval has been granted within the meaningof Article 2.
Article 4
A Member State which has granted type-approval shall take the
measures necessary to ensure that it is informed of any modification to a
part or characteristic referred to in item 2.2 of Annex I. The competent
authorities of that Member State shall determine whether fresh testsshould be carried out on the modified type and a fresh report drawn up.Where such tests reveal that the requirements of this Directive have notbeen complied with, the modification shall not be authorized.
Article 5
Modifications which are necessary to adapt the provisions of Annexes I,
11 and III to take account of technical progress shall be adopted in
accordance with the procedure laid down in Article 13 of Directive No70/156/EEC.
Article 6
1. By 1 June 1975, the Member States shall adopt and publish the
provisions necessary to comply with this Directive and shall immedi-ately inform the Commission thereof.
They shall apply these provisions from 1 October 1975.2. As soon as this Directive has been notified, the Member States
shall ensure that any draft laws, regulations or administrative provisions
which they intend to adopt in the field covered by this Directive are
communicated to the Commission in sufficient time for the Commissionto submit its comments thereon.
Article 7
This Directive is addressed to the Member States.1974L0483 — EN — 26.04.1979 — 001.001 — 3
▼B
▼B
ANNEX I
GENREAL DEFINITIONS, APPLICATIONS FOR EEC TYPE-
APPROVAL, EEC TYPE-APPROVAL, GENERAL SPECIFICATIONS,
PARTICULAR SPECIFICATIONS, CONFORMITY OF PRODUCTION (1)
1. GENERAL
1.1. The provisions of this Annex do not apply to exterior rear-view mirrors
or to the ball of towing devices.
1.2. The purpose of these provisions is to reduce the risk or seriousness of
bodily injury to a person hit by the bodywork or brushing against it in
the event of a collision. ►M1This is valid both when the vehicle is
stationary and in motion. ◄
2. DEFINITIONS
For the purposes of this Directive:
2.1. ‘type-approval of a vehicle’ means the approval of a vehicle type with
regard to its external projections;
2.2. ‘vehicle type as regards its external projections’ means a category of
motor vehicles not differing in such essential respects as shape or
materials of the external surface;
2.3. ‘external surface’ means the outside of the vehicle including the bonnet,
the lid of the luggage compartment, the doors, the wings, the roof, the
lighting and light-signalling devices and the visible strengthening
components;
2.4. ‘floor line’ means the line determined as follows:
successively position round a laden vehicle a cone with a vertical axis
the height of which is not defined, and with a half angle of 30º in such a
way that it contacts, constantly and as low as possible, the external
surface of the vehicle. The floor line is the geometric trace of these
points of contact. In determining the floor line, the jacking points,
exhaust pipes or wheels shall not be taken into consideration. The gaps
of the wheel arches are assumed to be filled in by an imaginary surface
forming a smoth continuation of the surrounding external surface. At
both ends of the vehicle the bumper shall be taken into consideration
when establishing the floor line. Dependent upon the particular vehicle
the floor line trace may occur at the bumper section extremity or at the
body panel below the bumper. Where two or more points of contact
occur simultaneously, the lower point of contact shall be used to
determine the floor line;
2.5. ‘radius of curvature’ means the radius of the arc of a circle which
comes closest to the rounded form of the component under
consideration;
2.6. ‘laden vehicle’ means the vehicle laden to the maximum permitted
technical mass. Vehicles equipped with hydropneumatic, hydraulic or
pneumatic suspension or a device for automatic levelling according to
load shall be tested with the vehicle in the most adverse normal running
condition specified by the manufacturer;
2.7. ‘extreme outer edge’ of the vehicle means, in relation to the sides of the
vehicle, the plane parallel to the median longitudinal plane of the
vehicle coinciding with its outer lateral edge, and, in relation to the
front and rear ends, the perpendicular transverse plane of the vehicle
coinciding with its outer front and rear edges, account not being taken
of the projection:
2.7.1. of tyres near their point of contact with the ground, and connections for
tyre pressure gauges;
2.7.2. of any anti-skid devices which may be mounted on the wheels;1974L0483 — EN — 26.04.1979 — 001.001 — 4
(1) The text of the Annexes in basically similar to that of Regulation No 26 of the Economic
Commission for Europe of the United Nations. In particular the subdivision of thesections is the same. Where an item of Regulation No 26 has no corresponding item in
the Annexes, the number is none the less given for the record in brackets.▼M1
▼B
▼M1
▼M1
2.7.3. of rear-view mirrors;
2.7.4. of side direction indicator lamps, end outline marker lamps, front and
rear position (side) lamps and parking lamps;
2.7.5. in relation to the front and rear ends, of parts mounted on the bumpers,
of towing devices and of exhaust pipes;
2.8. ‘the dimension of the projection’ of a component mounted on a panel
means the dimension determined by the method described in Annex II,
item 2;
2.9. ‘the nominal line of a panel’ means the line passing through the two
points represented by the position of the centre of a sphere when its
surface makes its first and last contact with a component during the
measuring procedure described in Annex II, item 2.2.
3. APPLICATION FOR EEC TYPE-APPROVAL
3.1. Application for EEC type-approval of a vehicle type in respect of its
external projections
3.1.1. The application for EEC type-approval of a vehicle type in respect of its
external projections shall be submitted by the vehicle manufacturer or
by his authorized representative.
3.1.2. It shall be accompanied by the undermentioned documents in triplicate:3.1.2.1. photographs of the front, rear, and side parts of the vehicle taken at an
angle of 30º to 45º to the vertical longitudinal median plane of the
vehicle;
3.1.2.2. drawings of the bumpers;3.1.2.3. where appropriate, drawings of specific external projections and, if
necessary, of certain sections of the external surface referred to in item
6.9.1.
3.1.3. A vehicle representative of the type of vehicle to be approved shall be
submitted to the technical service responsible for type-approval. At the
request of the technical service, the specific components or samples of
the materials used shall likewise be submitted.
3.2. Application for EEC type-approval in respect of luggage racks, ski
racks or radio receiving or transmitting aerials considered to be
separate technical units
3.2.1. Applications for EEC type-approval in respect of luggage racks, ski
racks or radio receiving or transmitting aerials considered to be separate
technical units within the meaning of Article 9a of Directive 70/156/
EEC shall be submitted by the vehicle manufacturer or the
manufacturer of the aforementioned separate technical units, or by
their authorized representative.
3.2.2. For every type of any one of the devices referred to in item 3.2.1 above,
the application shall be accompanied by the following:
3.2.2.1. triplicate copies of documents specifying the technical characteristics of
the separate technical unit and the assembly instructions to be supplied
with every separate technical unit sold;
3.2.2.2. a specimen of the type of separate technical unit. Should the responsible
authority consider it necessary, it may request a further specimen. The
specimens shall be clearly and indelibly inscribed with the mark
specified in Article 9a (3) of Directive 70/156/EEC. As far as luggage
racks and ski racks are concerned, provision shall be made for the
subsequent compulsory display of the EEC type-approval number. The
type-approval number shall be preceded by the international registration
letter(s) of the country granting such approval (
1).
4. EEC TYPE-APPROVAL
(4.1.)1974L0483 — EN — 26.04.1979 — 001.001 — 5
(1) B = Belgium, D = Germany, DK = Denmark, F = France, GB = United Kingdom,
I = Italy, IRL = Ireland, L = Luxembourg, NL = Netherlands.▼B
▼B
(4.2.)
(4.3.)
(4.4.)(4.4.1.)
(4.4.2.)
(4.5.)4.6. A form conforming to the model in Annex III shall be attached to the
EEC type-approval certificate.
4.6.1. When approval is granted for an application under item 3.1, a form
conforming to the model in Annex III shall be attached to the type-
approval certificate.
4.6.2. When approval is granted for an application under item 3.2, a form
conforming to the model in Annex IV shall be issued.
4.6.3. Where reference is made in an application under item 3.1 to a form of
the type illustrated in Annex IV, the scope of the vehicle test shall be
reduced accordingly in respect of the external projections. In such
cases, the type-approval certificate for the vehicle shall be accompanied
by a copy of the type-approval certificate for the separate technical unit.
5. GENERAL SPECIFICATIONS
5.1. The provisions of this Annex shall not apply to those parts of the
external surface which, with the vehicle in the laden condition, with all
doors, windows and access lids etc., in the closed position, are either:
5.1.1. at a height of more than 2 m; or5.1.2. below the floor line; or
5.1.3. so located that, in their static condition as well as when in operation,
they cannot be contacted by a sphere 100 mm in diameter.
5.2. The external surface of vehicles shall not exhibit, directed outwards,
any pointed or sharp parts or any projections of such shape, dimensions,
direction or hardness as to be likely to increase the risk or seriousness
of bodily injury to a person hit by the external surface or brushing
against it in the event of a collision.
5.3. The external surface of vehicles shall not exhibit, directed outwards,
any parts likely to catch on pedestrians, cyclists or motor cyclists.
5.4. No protruding part of the external surface shall have a radius of
curvature less than 2-5 mm. This requirement shall not apply to parts of
the external surface which protrude less than 5 mm, but the outward
facing angles of such parts shall be blunted, save where such parts
protrude less than 1·5 mm.
5.5. Protruding parts of the external surface, made of a material of hardness
not exceeding 60 shore A, may have a radius of curvature less than
2·5 mm. ►
M1The hardness measurement shall be taken with the
component as installed on the vehicle. Where it is impossible to carry
out a hardness measurement by the Shore A procedure, comparable
measurements shall be used for evaluation. ◄
5.6. The provisions of the above items 5.1 to 5.5 shall apply in addition to
the particular specifications of the following item 6, except where these
particular specifications expressly provide otherwise.1974L0483 — EN — 26.04.1979 — 001.001 — 6
▼M1
▼B
▼M1
▼B
▼M1
▼B
▼M1
▼B
6. PARTICULAR SPECIFICATIONS
6.1. Ornaments
6.1.1. Added ornaments which project more than 10 mm from their support
shall retract, become detached or bend over under a force of 10 daN
exerted at their most salient point in any direction in a plane
approximately parallel to the surface on which they are mounted.
These provisions shall not apply to ornaments on radiator grilles, to
which only the general requirements of item 5 shall apply. ►M1To
apply the 10 daN force a flat-ended ram of not more than 50 mm
diameter shall be used. Where this is not possible, an equivalent method
shall be used. After the ornaments are retracted, detached or bent over,
the remaining projections shall not project more than 10 mm. These
projections shall in any case satisfy the provisions of item 5.2. If the
ornament is mounted on a base, this base is regarded as belonging to the
ornament and not to the supporting surface. ◄
6.1.2. Protective strips or shielding on the external surface shall not be subject
to the requirements of item 6.1.1 above. However, they shall be firmly
secured to the vehicle.
6.2. Headlights
6.2.1. Projecting visors and rims shall be permitted on headlights, provided
that their projection, as measured in relation to the external transparent
surface of the headlight does not exceed 30 mm and their radius of
curvature is at least 2·5 mm throughout. ►M1In the case of a
headlight mounted behind an additional transparent surface, the
projection shall be measured from the outermost transparent surface.
The projections shall be determined according to the method described
in item 3 of Annex II. ◄
6.2.2. Retracting headlights shall meet the requirements of item 6.2.1 above in
both the operative and retracted positions.
6.2.3. The provisions of item 6.2.1 above do not apply to headlights which are
sunk into the bodywork or which are ‘overhung’ by the bodywork, if
the latter complies with the requirements of item 6.9.1.
6.3. Grilles and gaps
6.3.1. The requirements of item 5.4 shall not apply to gaps between fixed or
movable elements, including those forming part of air intake or outlet
grilles and radiator grilles, provided that the distance between
consecutive elements does not exceed 40 mm and provided that the
grilles and gaps have a functional purpose. For gaps of between 40 mm
and 25 mm the radii of curvature shall be 1 mm or more. However, if
the distance between two consecutive elements is equal to or less than
25 mm, the radii of curvature of external faces of the elements shall not
be less than 0·5 mm. The distance between two consecutive elements of
grilles and gaps shall be determined according to the method described
in item 4 of Annex II.
6.3.2. The junction of the front with the side faces of each element forming a
grille or gap shall be blunted.
6.4. Windscreen wipers
6.4.1. The windscreen wiper fittings shall be such that the wiper shaft is
furnished with a protective casing which has a radius of curvature
meeting the requirements of item 5.4 above and an end surface area of
not less than 150 mm2. In the case of rounded covers, these shall have a
minimum projected area of 150 mm2when measured not more than1974L0483 — EN — 26.04.1979 — 001.001 — 7
▼M1
▼B
▼M1
▼B
▼M1
▼B
▼M1
▼M1
6·5 mm from the point projecting furthest. These requirements shall
also be met by rear window wipers and headlight wipers.
6.4.2. Item 5.4 shall not apply to the wiper blades or to any supporting
members. However, these units shall be so made as to have no sharp
angles or pointed or cutting parts.
6.5. Bumpers
6.5.1. The ends of the bumpers shall be turned in towards the external surface
in order to minimize the risk of fouling. This requirement is considered
to be satisfied if either the bumper is recessed or integrated within the
bodywork or the end of the bumper is turned in so that it is not
contactable by a 100 mm sphere and the gap between the bumper end
and the surrounding bodywork does not exceed 20 mm.
6.5.2. The components of the bumper shall be so designed that all rigid
surfaces facing outwards have a minimum radius of curvature of 5 mm.
6.5.3. The requirement of item 6.5.2 shall not apply to parts on or of the
bumper or to bumper insets which have a projection of less than 5 mm,
with special reference to joint covers and jets for headlight washers; but
the outward facing angles of such parts shall be blunted, save where
such parts protrude less than 1·5 mm.
6.6. Handles, hinges and push-buttons of doors, luggage compartments
and bonnets; fuel tank filler caps and covers
6.6.1. The projection shall not exceed 40 mm in the case of door or luggage
compartment handles and 30 mm in all other cases.
6.6.2. If lateral door handles rotate to operate, they shall meet one or other of
the following requirements:
6.6.2.1. In the case of handles which rotate parallel to the plane of the door the
open end of handles must be directed towards the rear. The end of such
handles shall be turned back towards the plane of the door and fitted
into a protective surround or be recessed.
6.6.2.2. Handles which pivot outwards in any direction which is not parallel to
the plane of the door shall, when in the closed position, be enclosed in a
protective surround or be recessed. The open end shall face either
rearwards or downwards.
Nevertheless, handles which do not comply with this last condition may
be accepted if:
— they have an independent return mechanism,
— should the return mechanisms fail, they cannot project more than
15 mm,
— they comply, in such opened position, with the provisions of item
5.4, and
— their end surface area, when measured not more than 6·5 mm from
the point projecting furthest, is not less than 150 mm2.
6.7. Wheels, wheel nuts, hub caps and wheel discs
6.7.1. The requirements of item 5.4 shall not apply.6.7.2. The wheels, wheel nuts, hub caps and wheel discs shall not exhibit any
pointed or sharp projections that extend beyond the external plane of
the wheel rim. Wing nuts shall not be allowed.
6.7.3. When the vehicle is travelling in a straight line, no part of the wheels
other than the tyres, situated above the horizontal plane passing through
their axis of rotation shall project beyond the vertical projection, in a
horizontal plane, of the external surface or structure. However, if
functional requirements so warrant, wheel discs which cover wheel and
hub nuts may project beyond the vertical projection of the external
surface or structure on condition that the radius of curvature of the1974L0483 — EN — 26.04.1979 — 001.001 — 8
▼B
▼M1
▼B
▼M1
▼B
▼M1
▼B
▼B
surface of the projecting part is not less than 30 mm and that the
projection beyond the vertical projection of the external surface or
structure in no case exceeds 30 mm.
6.8. Sheet-metal edges
6.8.1. Sheet-metal edges, such as gutter edges and the rails of sliding doors
shall not be permitted unless they are folded back or are fitted with a
shield meeting the requirements of this Annex which are applicable to
it.►M1An unprotected edge shall be considered to be folded back
either if it is folded back by approximately 180º, or if it is folded
towards the bodywork in such a manner that it cannot be contacted by a
sphere having a diameter of 100 mm. ◄
6.9. Body panels
6.9.1. Folds in body panels may have a radius of curvature of less than
2·5 mm, provided that it is not less than one-tenth of the height ‘H’ of
the projection, measured in accordance with the method described in
►M1Annex II, item 1. ◄
6.10. Lateral air or rain deflectors
6.10.1. Lateral deflectors shall have a radius of curvature of at least 1 mm on
edges capable of being directed outwards.
6.11. Jacking brackets and exhaust pipes
6.11.1. The jacking brackets and exhaust pipe(s) shall not project more than
10 mm beyond the vertical projection of the floor line lying vertically
above them. As an exception to this requirement an exhaust pipe may
project more than 10 mm beyond the vertical projection of the floor
line, so long as it terminates in rounded edges, the minimum radius of
curvature being 2·5 mm.
6.12. Air intake and outlet flaps
6.12.1. Air intake and outlet flaps shall meet the requirements of items 5.2, 5.3
and 5.4 in all positions of use.
6.13. Roof
6.13.1. Opening roofs shall be considered only in the closed position.
6.13.2. Convertible vehicles shall be examined with the hood in both the raised
and lowered positions.
6.13.2.1. With the hood lowered, no examination shall be made of the vehicle
inside an imaginary surface formed by the hood when in the raised
position.
6.13.2.2. Where a cover for the linkage of the hood when folded is provided as
standard equipment, the examination shall be made with the cover in
position.
6.14. Windows
6.14.1. Windows which move outwards from the external surface of the vehicle
shall comply with the following provisions in all positions of use:
6.14.1.1. no exposed edge shall face forwards;
6.14.1.2. no part of the window shall project beyond the extreme outer edge of
the vehicle.
6.15. Registration plate brackets
6.15.1. Supporting brackets provided by the vehicle manufacturer for
registration plates shall comply with the requirements of item 5.4 of
this Annex if they are contactable by a 100 mm diameter sphere when a
registration plate is fitted in accordance with the vehicle manufacturer's
recommendation.
6.16. Luggage racks and ski racks
6.16.1. Luggage racks and skiracks shall be so attached to the vehi cle that
positive locking exists in at least one direction and that horizontal,
longitudinal and transverse forces can be transmitted which are at least1974L0483 — EN — 26.04.1979 — 001.001 — 9
▼M1
▼M1
equal to the vertical load-bearing capacity of the rack as specified by its
manufacturer. For the test of the luggage rack or skirack fi xed to the
vehicle according to the manufacturer's instructions, the test loads shall
not be applied at one point only.
6.16.2. Surfaces which, after installation of the rack, can be contacted by a
sphere of 165 mm diameter shall not have parts with a radius of
curvature less than 2·5 mm, unless the provisions of 6.3 can be applied.
6.16.3. Fastening elements such as bolts that are tightened or loosened without
tools shall not project more than 40 mm beyond the surfaces referred to
in 6.16.2, the projection being determined according to the method
prescribed in Annex II, item 2, but using a sphere of 165 mm diameter
in those cases where the method prescribed in item 2.2 of that Annex is
employed.
6.17. Radio receiving or transmitting aerials
6.17.1. Radio receiving or transmitting aerials shall be fitted to the vehicle in
such a way that if their unattached end is less than 2 m from the road
surface in any position of use specified by the manufacturer of the
aerial, it shall be inside the zone bounded by the vertical planes which
are 10 cm inside the extreme outer edge of the vehicle as defined in
item 2.7.
6.17.2. Furthermore, aerials shall be so fitted to the vehicle, and if necessary
their unattached ends so restricted, that no part of the aerials protrude
beyond the extreme outer edge of the vehicle as defined in item 2.7.
6.17.3. Shafts of aerials may have radii of curvature of less than 2·5 mm.
However, the unattached ends shall be fitted with fixed cappings, the
radii of curvature of which are not less than 2·5 mm.
6.17.4. The bases of aerials shall not project more than 30 mm when
determined according to the procedure of Annex II, item 2. However, in
the case of aerials with amplifiers built into the base, these bases may
project up to 40 mm.
6.18. Assembly instructions
6.18.1. Luggage racks, ski racks and radio receiving or transmitting aerials that
have been type-approved as separate technical units may not be offered
for sale, sold or purchased unless accompanied by assembly instruc-
tions. The assembly instructions shall contain sufficient information to
enable the approved components to be mounted on the vehicle in a
manner that complies with the relevant provisions of items 5 and 6. In
particular, the positions of use must be indicated for telescopic aerials.
(7.)
(7.1.)
(7.1.1.)
(7.1.2.)(7.2.)
8. CONFORMITY OF PRODUCTION
(8.1.)
8.2. In order to verify conformity with the approved type, a sufficient
number of random checks shall be performed on serially produced
vehicles.
(9.)
(9.1.)
(9.2.)
(10.)1974L0483 — EN — 26.04.1979 — 001.001 — 10
▼B
▼B
ANNEX II
METHODS OF DETERMINING THE DIMENSIONS OF PROJECTIONS
AND GAPS
1. METHOD OF DETERMINING THE HEIGHT OF THE PROJECTION OF
FOLDS IN BODY PANELS
►M11.1◄The height H of a projection is determined graphically by
reference to the circumference of a 165 mm diameter circle, internally
tangential to the external outline of the external surface at the section to be
checked.
►M11.2◄H is the maximum value of the distance, measured along a straight
line passing through the centre of the 165 mm diameter circle, between the
circumference of the aforesaid circle and the external contour of the
projection (see Fig. 1).
►M11.3◄In cases where it is not possible for a 100 mm diameter circle to
contact externally part of the external outline of the external surface at the
section under consideration, the surface outline in this area will be assumed
to be that formed by the circumference of the 100 mm diameter circle
between its tangent points with the external outline (see Fig. 2).
►M11.4◄Drawings of the necessary sections through the external surface
shall be provided by the manufacturer to allow the height of the projections
referred to above to be measured.
2. METHOD OF DETERMINING THE DIMENSION OF THE PROJECTION
OF A COMPONENT MOUNTED ON THE EXTERNA SURFACE
2.1. The dimension of the projection of a component which is mounted on a
convex surface may be determined either directly or by reference to a
drawing of an appropriate section of this component in its installed
condition.
2.2. If the dimension of the projection of a component which is mounted on a
surface other than convex cannot be determined by simple measurement, it
shall be determined by the maximum variation of the distance of the centre
of a 100 mm diameter sphere from the nominal line of the panel when the
sphere is moved over and is in constant contact with that component. Figure
3 shows an example of the use of this procedure.
3. METHOD OF DETERMINING THE PROJECTION OF HEADLIGHT
VISORS AND RIMS
3.1. The projection from the external surface of the headlight shall be measured
horizontally from the point of contact of a 100 mm diameter sphere as shown
in Figure 4.
4. METHOD OF DETERMINING THE DIMENSION OF A GAP OR THE
SPACE BETWEEN ELEMENTS OF A GRILLE
4.1. The dimension of a gap or space between elements of a grille shall be
determined by the distance between two planes passing through the points of
contact of the sphere and perpendicular to the line joining those points of
contact. Figures 5 and 6 show examples of the use of this procedure.1974L0483 — EN — 26.04.1979 — 001.001 — 11
▼M1
▼B
▼M1
▼B
Figure 1
Figure 21974L0483 — EN — 26.04.1979 — 001.001 — 12
▼M1
1974L0483 — EN — 26.04.1979 — 001.001 — 13
▼M1
ANNEX III
MODEL
►(1)M11974L0483 — EN — 26.04.1979 — 001.001 — 14
▼B
▼M1
ANNEX IV
MODEL
(Maximum format: A4 (210 × 297 mm)
1974L0483 — EN — 26.04.1979 — 001.001 — 15