Cycles -- Safety requirements of bicycles

Cycles -- Conditions de sécurité des bicyclettes

General Information

Status
Replaced
Publication Date
27-Sep-1989
Withdrawal Date
27-Sep-1989
Current Stage
6060 - International Standard published
Completion Date
28-Sep-1989
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ISO 4210:1989 - Cycles -- Safety requirements of bicycles
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I NTE R NAT1 ON AL
IS0
STANDARD
4210
Third edition
1989-1 0-01
Cycles - Safety requirements of bicycles
Cycles - Conditions de sécurité des bicyclettes
Reference number
IS0 4210 : 1989 (E)
---------------------- Page: 1 ----------------------
IS0 4210 : 1989 (E)
Contents
Page
Foreword ............................................................... iv
Introduction ............................................................ v
Section 1 : General

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1

Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2

Definitions . . . . . . . . . . . . . . . . . . . . . . ................................. 1

1.3
Section 2 : Requirements of sub-assemblies

2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Brakes ........................................................... 3
2.3 Steering ......................................................... 4

2.4 Frame/fork assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . 5

2.5 Frontfork . . . . . , . , . . . , . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.6 Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.7 Tyresandtubes ................................................... 5

2.8 Pedals and pedal/crank drive system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.9 Saddle ........................................................... 7
2.10 Chain ............................................................ 7
2.11 Chainguard ....................................................... 7

2.12 Lighting and reflectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.13 Warning device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

O IS0 1989

All rights reserved. No part of this publication may be reproduced or utilized in any form or by any

means, electronic or mechanical, including photocopying and microfilm, without permission in

writing from the publisher.
International Organization for Standardization
Case postale 56 0 CH-1211 Genève 20 0 Switzerland
Printed in Switzerland
---------------------- Page: 2 ----------------------
IS0 4210 : 1989 (E)
2.14 Instructions .......................................................
2.15 Marking ..........................................................
Section 3 : Requirements of complete bicycle
3.1 Roadtest ..................... .................................
Section 4 : Test methods
4.1 Brake block test ......... .............................
4.2 Brake system load test .......... ........................
4.3 Braking performance test ...........................................
4.4 Back-pedal brake linearity test .......................................
4.5 Steering assembly test . ............................
4.6 Impact tests on frame/fork assembly ..........................
4.7 Static load test (wheel) ............. .......................
4.8 Pedal tests ....... ...........................................
4.9 Static load test (saddle and pillar) . ................................
4.10 Road test ............................ ..........................
Annexes
A Explanation of method of obtaining "best fit" line and 20 % limit lines
for back-pedal brake linearity test ...........
...................... 26
B Steering geometry ........................
iii
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IS0 4210 : 1989 (E)
Foreword

IS0 (the International Organization for Standardization) is a worldwide federation of

national standards bodies (IS0 member bodies). The work of preparing International

Standards is normally carried out through IS0 technical committees. Each member

body interested in a subject for which a technical committee has been established has

the right to be represented on that committee. International organizations, govern-

mental and non-governmental, in liaison with ISO, also take part in the work. IS0

collaborates closely with the International Electrotechnical Commission (IEC) on all

matters of electrotechnical standardization.

Draft International Standards adopted by the technical committees are circulated to

the member bodies for approval before their acceptance as International Standards

the IS0 Council. They are approved in accordance with IS0 procedures requiring at

least 75 % approval by the member bodies voting.
International Standard IS0 4210 was prepared by Technical Committee ISO/TC 149,
Cycles.

This third edition cancels and replaces the second edition (IS0 4210 : 19821, which has

been revised to incorporate Amendment 1 of 1984 and draft Amendment 2 of 1986.
Annexes A and B of this International Standard are given for information only.
---------------------- Page: 4 ----------------------
IS0 4218 : 1989 (E)
Introduction

In producing this International Standard, the aim has been to ensure that bicycles

manufactured in compliance with it will be as safe as is practically possible. The tests

have been designed to ensure the strength and durability of individual parts as well as

of the bicycle as a whole, demanding high quality throughout and consideration of

safety aspects from the design stage onwards.

The test conditions specified for the test method for braking performance under wet

conditions (see 2.2.5.2) are more severe than are encountered in practice; the resulting

braking distances are therefore in excess of those that would be obtained under actual

rainy conditions.

Notwithstanding the requirements specified in this International Standard, any new

designs, constructions, materials and assembly methods which cannot be tested in ac-

cordance with the requirements of this International Standard but which give an

equivalent degree of safety and durability may be regarded as complying with this In-

ternational Standard until an amendment or addendum to this International Standard

is published.

The scope has been limited to safety considerations, and has specifically avoided stan-

dardization of components.
---------------------- Page: 5 ----------------------
---------------------- Page: 6 ----------------------
INTERNATIONAL STANDARD IS0 4210 : 1989 (E)
Cycles - Safety requirements of bicycles
Section 1 : General
IS0 7636 : 1984, Bells for bicycles and mopeds - Technical
1.1 Scope
specifications.
This International Standard specifies safety and performance
requirements for the design, assembly and testing of bicycles
1.3 Definitions
and sub-assemblies, and lays down guidelines for instructions
on the use and care of bicycles.
For the purposes of this International Standard, the following
definitions apply.
It applies to bicycles intended for use on public roads, and on
which the saddle can be adjusted to provide a saddle height of
1.3.1 cycle : Any vehicle that has at least two wheels and is
635 mm or more.
propelled solely by the muscular energy of the person on that
vehicle, in particular by means of pedals.
It does not apply to specialized types of bicycle such as
tradesmen’s delivery bicycles, tandems, toy bicycles and
1.3.2 bicycle : Two-wheeled cycle.
bicycles designed and equipped for use in sanctioned com-
petitive events.
1.3.3 delivery bicycle : Bicycle designed for the primary pur-
pose of carrying goods.
1.2 Normative references

The following standards contain provisions which, through 1.3.4 tandem : Bicycle with saddles for two or more riders,

one behind the other.
reference in this text, constitute provisions of this International
Standard. At the time of publication, the editions indicated
were valid. All standards are subject to revision, and parties to
1.3.5 saddle height : Dimension from the ground plane to
agreements based on this International Standard are encour-
the top of the saddle, measured in the centre of the seating
aged to investigate the possibility of applying the most recent
area normal to the ground plane when the bicycle is upright.
editions of the standards listed below. Members of IEC and IS0
maintain registers of currently valid International Standards.
1.3.6 braking distance : Distance travelled in bringing a
bicycle to rest from the moment of application of the brakes.
IS0 6742-1 : 1987, Cycles - Lighting and retro-reflective
devices - Photometric and physical requirements - Part I:
1.3.7 stopping distance : Sum of the braking distance and
Lighting equipment.
the distance travelled during the rider’s reaction time.
IS0 6742-2 : 1985, Cycles - Lighting and retro-reflective

devices - Photometric and physical requirements - Part 2: 1.3.8 gear development : Distance travelled by a bicycle

Retro-reflective devices.
during one revolution of the pedal cranks.
---------------------- Page: 7 ----------------------
IS0 4210 : 1989 (E)
1.3.10 (pedal) tread surface : Surface of a pedal that is
1.3.9 exposed protrusion : Protrusion that can be con-

tacted by the central 75 mm of the lateral surface of a cylinder presented to the underside of the foot, the design of which in-

corporates a slip-resistant characteristic.
250 mm long and 83 mm in diameter (simulating a limb). See
figure 1.
Dimensions in millimetres
Figure 1 - Exposed protrusion test cylinder
---------------------- Page: 8 ----------------------
IS0 4218 : 1989 (E)
Section 2 : Requirements of sub-assemblies
2.2 Brakes
2.1 General
2.2.1 Braking system
2.1.1 Sharp edges
A bicycle shall be equipped with a braking system, or systems,
Exposed edges that could come into contact with the rider’s
to ensure compliance with 2.2.5. Where one braking system is
hands, legs, etc,, during normal riding or normal handling and
provided, this shall operate on the rear wheel; where two
normal maintenance shall not be sharp.
separate systems are provided, one shall operate on the front
wheel and one on the rear wheel.
2.1.2 Protrusions
2.2.2 Hand-operated brakes
Any exposed protrusion longer than 8 mm after assembly shall
terminate in a radius of not less than 6,3 mm. Such protrusions
2.2.2.1 Brake lever position
shall have a major end dimension greater than 12,7 mm and a
minor end dimension greater than 3,2 mm.
The brake levers for front and rear brakes shall be positioned on
those sides of the handlebar appropriate to the country in
There shall be no protrusions on the top tube of a bicycle frame
which the bicycle is to be used.
between the saddle and a point 300 mm forward of the saddle,
with the exception that control cables no greater than 6,4 mm

in diameter and cable clamps made from material no thicker 2.2.2.2 Brake lever dimensions

than 4,8 mm may be attached to the top tube.
The maximum grip dimension, d (see figure 2) measured be-
tween the outer surfaces of the brake lever and the handlebar,
A screw thread that is an exposed protrusion (see 1.3.9) shall
or the handlebar grip or any other covering where present, shall
be limited to a protrusion length of one major diameter of the
not exceed 90 mm between points A and B, and 100 mm be-
screw beyond the internally threaded mating part.
tween points B and c.
Dimensions in millimetres
Pivot
Figure 2 - Brake lever grip dimensions
---------------------- Page: 9 ----------------------
IS0 4210 : 1989 (E)
b) a bicycle having a gear development, in its highest gear,
2.2.2.3 Cable-brake assembly
of less than 5 m shall be brought to a smooth safe stop
within a distance of 5,5 m from a velocity of 16 km/h.
When a bicycle is equipped with cable brakes of whatever type,
the screws for attaching to the frame or fork shall be provided
NOTE - The braking distance of 5.5 m includes a margin of human
with a suitable locking device, for example lockwasher, locknut
and instrument error associated with current test methods, and may be
or stiffnut.
reviewed at a later date in the light of experience gained in testing.
The brake system shall operate without binding.
2.2.5.2 Braking under wet conditions
The cable pinch-bolt shall not cut any of the cable strands,

when assembled to the manufacturer’s instructions. When tested by the method described in 4.3, a bicycle shall be

brought to a smooth, safe stop within a distance of 15 m from a
velocity of 16 km/h.
2.2.2.4 Brake pad assembly

The brake friction pad shall be securely attached to the backing 2.2.5.3 Linearity of back-pedal brake

plate or holder and there shall be no failure of the friction pad
When tested by the method described in 4.4, the brake force
assembly when tested by the method specified in 4.1. The
shall be linearly proportional (within 20 %) to a pedal force of
brake system shall be capable of meeting the braking perfor-
from 90 N to 300 N and shall be not less than 150 N for a pedal
mance requirements of 2.2.5.1 and 2.2.5.2 after completion of
force of 300 N.
the test specified in 4.1.
2.3 Steering
2.2.2.5 Brake adjustment
The brakes shall be capable of adjustment to an efficient
2.3.1 Handlebars
operating position until the brake pads have worn to the point
of requiring replacement as recommended in the literature pro-
The handlebars shall have an overall width between 350 mm
vided by the manufacturer.
and 700 mm. The vertical distance between the top of the
handlebar grips in their highest position and the seat surface of
When correctly adjusted, the brake pad shall not contact
the saddle in its lowest position shall not exceed 400 mm.
anything other than the intended braking surface.
The ends of the handlebars shall be fitted with handgrips or end
a removal force of 70 N.
plugs that will withstand
2.2.3 Back-pedal brakes
The brake shall be actuated by the operator’s foot applying
2.3.2 Handlebar stem
force to the pedal in a direction opposite to that of the drive
The handlebar stem shall contain a permanent mark that clearly
force. The brake mechanism shall function independently of

any drive-gear positions or adjustments. The differential be- indicates the minimum insertion depth of the handlebar stem

into the fork stem, or alternatively a positive and permanent
tween the drive and brake positions of the crank shall not ex-

ceed 60°. The measurement shall be taken with the crank held means of ensuring the minimum insertion depth shall be pro-

vided. The insertion mark, or insertion depth, shall be not less
against each position with a torque of at least 14 N.m.
than 2,5 times the shaft diameter from the lower end of the
stem, and there shall be at least one shaft diameter‘s length of
2.2.4 Strength of brake system
contiguous circumferential shaft material below the mark. An
insertion mark shall not detract from the strength of the
2.2.4.1 Hand-operated brakes
handlebar stem.
When tested by the method described in 4.2.1, there shall be
2.3.3 Expander bolt for handlebar stem
no failure of the brake system or of any component thereof.
The minimum failure torque of the bolt shall be at least 50 YO
2.2.4.2 Back-pedal brakes
greater than the manufacturer‘s maximum tightening torque.
When tested by the method described in 4.2.2, there shall be
2.3.4 Steering stability
no failure of the brake system or any component thereof.
The steering shall be free to turn through at least 60° either side

2.2.5 Braking performance of the straight-ahead position and shall exhibit no tight spots,

stiffness or slackness in the bearings when correctly adjusted.
2.2.5.1 Braking under dry conditions
A minimum of 25 % of the total mass of the bicycle and rider
shall act on the front wheel when the rider is holding the
When tested by the method described in 4.3,
handlebar grips and sitting on the saddle, with the saddle and

a) a bicycle having a gear development, in its highest gear, rider in their most rearward positions.

of 5 m or more shall be brought to a smooth safe stop

within a distance of 5,5 m from a velocity of 24 km/h; Recommendations for steering geometry are given in annex B.

---------------------- Page: 10 ----------------------
IS0 4210 : 1989 (E)
2.3.5 Strength of steering assembly 2.6.1.2 Squareness tolerance
The handlebar stem shall be capable of withstanding without
For bicycles equipped with rim brakes, the run-out shall not
fracture the tests described in 4.5.1.1 and 4.5.1 2.
exceed 2 mm when measured parallel to the axle at a suitable
point along the rim.
When tested by the method described in 4.5.2, there shall be
no movement of the handlebar relative to the stem.
For bicycles not equipped with rim brakes, the run-out shall not
exceed 4 mm.
When tested by the method described in 4.5.3, there shall be
no movement of the handlebar stem relative to the fork stem
other than that movement required to take up tolerances before
2.6.2 Clearance
any locking faces abut. Such movement shall not exceed 5O.
Alignment of the wheel assembly in a bicycle shall allow not
less than 2 mm clearance between the tyre and any frame or
2.4 Frame/fork assembly
fork element.
2.4.1 Impact test (falling mass)
2.6.3 Static load test
When tested by the method described in 4.6.1, there shall be
When a fully assembled wheel is tested by the method de-
no visible evidence of fracture, and the permanent deformation
scribed in 4.7, there shall be no failure of any of the
of the assembly, measured between the centre-lines of the
components of the wheel, and the permanent deformation,
40 mm.
axles, shall not exceed
measured at the point of application of the force on the rim,
shall not exceed 1.5 mm.
2.4.2 Impact test (falling frame/fork assembly)
When tested by the method described in 4.6.2, there shall be
2.6.4 Wheel retention
no visible evidence of fracture.
Wheels shall be secured to the bicycle frame with a positive
locking device and shall be tightened to the manufacturer’s
2.5 Front fork
specification.
The slots or other means of location for the front axle within the
front fork shall be such that when the axle or cones are firmly
2.6.4.1 Front wheel retention
abutting the top face of the slots, the front wheel remains cen-
tral within the front fork.
There shall be no relative motion between the axle and the front
fork when a force of 500 N is applied symmetrically to the axle
for a period of 30 s in the direction of removal of the wheel.
2.6 Wheels
2.6.4.2 Rear wheel retention
2.6.1 Rotational trueness
There shall be no relative motion between the axle and the
This is defined in IS0 1101’’ in terms of circular run-out
frame when a force of 1 780 N is applied symmetrically to the
tolerance (axial). The run-out tolerances given below represent
axle for a period of 30 s in the direction of removal of the wheel.
the maximum permissible variation of position of the rim (i.e.
full indicator reading) of a fully assembled wheel during one
complete revolution about the axle without axial movement.
2.7 Tyres and tubes
2.6.1 .I Concentricity tolerance
2.7.1 Inflation pressure
For bicycles equipped with rim brakes, the run-out shall not

exceed 2 mm when measured perpendicular to the axle at a The maximum inflation pressure recommended by the

suitable point along the rim. manufacturer shall be moulded on the sidewall of the tyre so as

to be readily visible when the latter is assembled on the wheel.
For bicycles not equipped with rim brakes, the run-out shall not
exceed 4 mm.
Non-moulded tyres are excluded from this requirement.

1) IS0 1101 : 1983, Technicaldrawings - Geometrical tolerancing - Tolerancing of form, orientation, location and run-out - Generalities, defi-

nitions, symbols, indications on drawings.
---------------------- Page: 11 ----------------------
IS0 4210 : 1989 (E)
2.8.2 Pedal clearance
2.7.2 Compatibility
The tyre and tube shall be compatible with the rim design.
2.8.2.1 Ground clearance
When inflated to 110 % of the recommended inflation pressure
for a period of not less than 5 min, the tyre shall remain intact
With the bicycle unladen, the pedal at its lowest point and the
on the rim.
tread surface of the pedal parallel to the ground and uppermost
where it has only one tread surface, the bicycle shall be capable
of being leaned over at an angle of 25O from the vertical before
Pedals and pedal/crank drive system
2.8
any part of the pedal touches the ground.
2.8.1 Pedal tread
When a bicycle is equipped with a sprung suspension, this
measurement shall be taken with the suspension in a depressed
2.8.1.1 The tread surface of a pedal shall be secured against
position such as would be caused by a rider weighing 85 kg.
movement within the pedal assembly.
2.8.2.2 Toe clearance
2.8.1.2 Pedals intended to be used without toe-clips, or for
optional use with toe-clips, shall have
Bicycles not equipped with positive foot-retaining devices
(such as to4clips) shall have at least 89 mm clearance between
a) tread surfaces on the top and bottom surfaces of the
the pedal and the front tyre or mudguard (when turned to any
pedal, or
position). The clearance shall be measured forward and parallel
to the longitudinal axis of the bicycle from the centre of either
b) a definite preferred position that automatically presents
pedal to the arc swept by the tyre or mudguard, whichever
the tread surface to the rider's foot.
results in the least clearance. See figure 3.
Where a bicycle front fork has features that are designed to
2.8.1.3 Pedals designed to be used only with toe-clips shall
permit the fitting of a front mudguard, the toe clearance shall
have toe-clips securely attached and need not comply with the
2.8.1.2 a) and b). be measured with a suitable mudguard so fitted.
requirements given in
Bicycle pedal
Figure 3 - Toe clearance
---------------------- Page: 12 ----------------------
IS0 4218 : 1989 (E)
2.8.3 Drive system static load test 2.12 Lighting and reflectors
When tested by the method described in 4.8.1, there shall be
2.12.1 Lighting
no visible fracture of any component of the drive system, and
drive capability shall not be lost.
2.12.1.1 Lighting system
2.8.4 PedaVcrank system kinetic test
The provision of front or rear lamps, or of a complete lighting
system, is not mandatory for the purposes of this International
When tested by the method described in 4.8.2, there shall be
Standard, but where fitted this shall be in accordance with the
no visible fracture of any part of the pedal or of the crank
appropriate legislation of the country in which the bicycle is to
threads.
be used, or, in the absence of such legislation, shall comply
with the requirements of IS0 6742-1 and IS0 6742-2.
2.9 Saddle
2.12.1.2 Wiring harness
When a wiring harness is fitted, it shall be positioned to avoid
2.9.1 Limiting dimensions
damage by contact with moving parts or sharp edges. All con-
nections shall withstand a tensile force in any direction of 10 N.
No part of the saddle, saddle supports, or accessories attached
to the saddle shall be more than 125 mm above the top saddle
surface at the point where the saddle surface is intersected by
2.12.2 Reflectors
the seat post axis.
2.12.2.1 General
2.9.2 Saddle pillar
Reflectors shall be fitted to comply with the following
requirements unless specified otherwise in the legislation of the
The saddle pillar shall contain a permanent mark that clearly in-
country in which the bicycle is to be used.
dicates the minimum insertion depth of the pillar into the frame.
The insertion mark shall be not less than two diameters of the
pillar, measured from the bottom of the full diameter of the
2.12.2.2 Rear reflectors
pillar, and it shall not detract from the strength of the pillar.
Bicycles equipped with a rear light in accordance with 2.12.1
shall be additionally equipped with a rear wide-angle reflector,
2.9.3 Saddle adjustment clamps
or conventional reflector, meeting the requirements of
IS0 6742-2. Bicycles that have no such rear light shall be
When tested by the method described in 4.9, there shall be no
equipped with a wide-angle reflector. Rear reflectors shall be
movement of the saddle clamp in any direction with respect to
red in colour.
the pillar, or of the pillar with respect to the frame.
2.12.2.3 Side reflectors
Saddles which are not clamped, but are designed to pivot in a
vertical plane with respect to the pillar, shall be allowed to

@ move within the parameters of the design and shall withstand Bicycles shall be equipped with two side reflectors each visible

the test described in 4.9 without failure. from both sides. The reflectors shall be in one of the following

forms :
a) wide-angle reflectors fitted on the front half and on the
2.10 Chain
rear half of the bicycle. At least one of these shall be
mounted on the spokes of the wheel. Where a bicycle incor-
Where a chain drive is used as a means of transmitting the
porates features at the rear wheel other than the frame and
motive force, the chain shall operate over the front and rear
mudguard stays, the moving reflector shall be mounted on
sprockets without binding.
the front wheel, or
The chain shall have a minimum breaking load of 8 O10 N.
b) a continuous circle of reflective material applied to both
sides of each wheel within 10 cm of the outer diameter of
the tyre.
2.11 Chainguard
2.12.2.3.1 Wide-angle reflectors shall comply with the re-
A bicycle shall be equipped with a protective device shielding
quirements of IS0 6742-2. Reflective materials shall comply
the upper junction of the chain and chain wheel (drive
with the photometric requirements of IS0 6742-2.
sprocket) against the entrapment of clothing or body parts. The
device shall shield the chain for a distance of at least 25 mm

measured prior to the point of engagement of the chain with 2.12.2.3.2 All side reflectors shall be of the same colour,

the chain wheel. either white (clear) or yellow.
---------------------- Page: 13 ----------------------
IS0 4210 : 1989 (E)
explanation of the warning marks on seat pillar and
2.12.2.4 Front reflectors
handlebar stem;
Bicycles equipped with a front light in accordance with 2.12 are
b) recommended tightening of fasteners related to
not required to have a front reflector. Bicycles that have no
handlebar, handlebar stem, saddle and pillar, and wheels;
such front light shall be equipped with a wide-angle reflector

complying with the requirements of IS0 6742-2. Front reflec- c) lubrication - where and how often to lubricate, and

tors shall be white (clear) in colour. recommended lubricant;
d) correct chain tension and how to adjust this;

2.12.2.5 Pedal reflectors e) adjustment of brakes and recommendations for replace-

ment of brake blocks;
Each pedal shall have reflectors complying with the re-
f) adjustment of gears;
quirements of IS0 6742-2, located on the front and rear sur-
faces of the pedal. The reflector elements may be either integral
g) normal spares, i.e. tyres, tubes, brake-block holder
with the construction of the pedal or mechanically attached,
assembly;
but shall be sufficiently recessed from the edge of the pedal, or
h) accessories - where these are offered as fitted, details
of the reflector housing, to prevent contact of the reflector ele-
should be included such as operation, maintenance required
ment with a flat surface placed in contact with the edge of the
(if any) and relevant spares (i.e. light-bulbs);
pedal. Pedal reflectors shall be yellow in colour.
i) recommendations on safe riding - regular checks on
brakes, tyres, steering and lighting; caution concerning in-
2.13 Warning device
creased braking distance in wet weather.
Any other relevant information may be included at the dis-
A bell or other suitable audible warning device may be fitted;
cretion of the manufacturer.
where fitted, it shall comply with IS0 7636 and/or appropriate
legislation of the country in which the bicycle is to be used.
2.15 Marking
Where a manufacturer claims compliance with this Interna-
2.14 Instructions
tional Standard, each bicycle shall be visibly and durably
marked with :
Each bicycle shall be provided with a set of instructions con-
taining information on
a) the number of this International Standard, i.e.
IS0 4210;
a) preparation for riding - how to measure and adjust the
seat height and handlebar height to suit the rider, with an
b) the manufacturer’s name or code.
Section 3 : Requirements of complete bicycle
3.1 Road test The bicycle shall exhibit stable handling in turning and steering,
and it shall be possible to ride with one hand removed from the

When tested by the method described in 4.10, there shall be no handlebar (as when giving hand signals), without difficulty of

operation or hazard to the rider.
system or component failure and no loosening or misalignment
of the seat, handlebars, control or reflectors.
---------------------- Page: 14 ----------------------
IS0 4218 : 1989 (E)
Section 4 : Test methods
4.1 Brake block test 4.3.2 Test track
The test shall be conducted on a fully assembled bicycle with
4.3.2.1 An indoor test track shall be used if possible. Where
the brakes adjusted to a correct position, and with a rider
an outdoor track is used, special attention should be paid to
weighing 70 kg, or an equivalent mass, on the saddle. Each
ambient conditions throughout the tests.
brake lever shall be actuated with a force of 180 N, which
...

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