ISO 4210:2014 Audit Checklist

Use the ISO Audit 4210:2014 Checklist to evaluate compliance with safety and performance standards for bicycles, ensuring quality and regulatory adherence.

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ISO 4210:2014 Audit Checklist

4.9.1 - General

4.9.2 - Means Of Location Of The Axle And Wheel Retention

4.9.3 - Suspension Forks â€” Special Requirements - 4.9.3.1 - Tyre Clearance Test

4.9.3.2 - Tensile Test

4.9.4 - Front Fork â€” Static Bending Test

4.9.5 - Front Fork â€” Rearward Impact Test - 4.9.5.1 - Forks Made Entirely Of Metal

4.9.5.2 - Forks Which Have Composite Parts

4.9.6 - Front Fork â€” Bending Fatigue Test Plus Rearward Impact Test

1. Are there no fractures, and does permanent deformation not exceed 45 mm? For composite forks, does peak-to-peak displacement at test points not increase by more than 20% for rigid forks or 40% for suspension forks? Is the test conducted in two stages in the same assembly?

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4.9.7 - Forks Intended For Use With HubÂ Or Disc Brakes - 4.9.7.1 - Static Brake Torque Test

4.9.7.2 Fork For Hub/Disc Brake â€” Brake Mount Fatigue Test

4.9.8 - Tensile Test For A Non-Welded Fork - 4.9.8.1 - General

4.9.8.2 - Requirement

4.10.1 Wheels/tyre Assembly â€” Concentricity Tolerance And Lateral Tolerance

1. Does the run-out not exceed the following values: For city and trekking bicycles, young adult bicycles, mountain bicycles, and racing bicycles, do the concentricity and lateral tolerances intended for rim-brakes not exceed the following values: 0.8 for city and trekking bicycles, 0.6 for young adult bicycles, and are there no specified values for mountain and racing bicycles?

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4.10.2 Wheel/Tyre Assembly â€” Clearance

1. Does the alignment of the wheel assembly in a bicycle allow not less than the clearance values between the tyre and any frame or fork element or a front mudguard and its attachment bolts, which are, specifically 6 mm for city and trekking bicycles, young adult bicycles, and mountain bicycles, and 4 mm for racing bicycles?

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4.10.3 Wheel/Tyre Assembly â€” Static Strength Test

1. Is there no failure of any components of the wheel, and does the permanent deformation measured at the point of application of the force on the rim not exceed the values which are, specifically 1.35 mm for city and trekking bicycles, 1.35 mm for young adult bicycles, and 0.9 mm for mountain and racing bicycles?

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4.10.4 Wheels â€” Wheel Retention - 4.10.4.1 General

4.10.4.2 Wheel Retention â€” Retention Devices Secured

4.10.4.3 Front Wheel Retention â€” Retention Devices Unsecured

2. When threaded axles and nuts are fitted, and the nuts are unscrewed by at least 360° from the finger tight condition, does the wheel not detach from the front fork when a force of 100 N is applied radially outwards, in line with the drop-out slots, and maintained for 1 min, provided the brake system is disconnected or released?

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3. When quick-release is fitted, does the wheel not detach from the front fork when a force of 100 N is applied radially outwards, in line with the drop-out slots, and maintained for 1 min, with the quick-release lever fully open and the brake system disconnected or released?

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4.10.5 Wheels â€” Quick-release Devices â€” Operating Features

4.11.1 General

2. Is the maximum inflation pressure recommended by the manufacturer permanently marked on the side wall of the tyre so as to be readily visible when the tyre is assembled on the wheel, and if the rim manufacturer recommends a maximum tyre inflation pressure, is it clearly and permanently marked on the rim and specified in the manufacturer’s instructions?

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4.11.2 Tyre Inflation Pressure

4.11.3 Tyre And Rim Compatibility

1. Do tyres that comply with the requirements of ISO 5775‐1 and rims that comply with the requirements of ISO 5775‐2 indicate compatibility, and does the tyre, tube, and tape remain compatible with the rim design when inflated to 110 % of the maximum inflation pressure for not less than 5 min?

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4.11.4 Tubular Tyres And Rims

4.11.5 Rim-wear

4.11.6 Greenhouse Effect Test For Composite Wheels - 4.11.6.1 General

1. Does this requirement ensure that wheels made from composite materials subjected to high temperature conditions (i.e. such as car storage in direct sunlight) do not suffer concealed damage that could subsequently affect the safety performance of the wheel during normal use?

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4.11.6.2 Requirement

1. When a fully assembled wheel made of composite material is tested, does it demonstrate no failure of any components, no tyre separation from the rim, no increase in rim width greater than 2% of the initial maximal width value, compliance with lateral and concentricity tolerance according to 4.10.1, compliance with tyre and rim compatibility according to 4.11.3, and compliance with static strength according to 4.10.3?

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4.12 Front Mudguard

4.13.1 - Pedal Tread - 4.13.1.1 - Tread Surface

4.13.1.2 Toe Clips

4.13.1.3

4.13.2 Pedal Clearance - 4.13.2.1 Ground Clearance

2. Can the bicycle be leaned over at an angle of θ2 from the vertical before any part of the pedal touches the ground? The lean angles for different bicycle types are as follows: For city and trekking bicycles, is the lean angle θ2 25 degrees? For young adult bicycles, is the lean angle θ2 23 degrees? For mountain bicycles, is the lean angle θ2 25 degrees? And for racing bicycles, is the lean angle θ2 23 degrees?

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4.13.2.2 Toe Clearance

1. Do bicycles have at least C clearance between the pedal and front tyre or mudguard (when turned to any position)? Is the clearance measured forward and parallel to the longitudinal axis of the bicycle from the center of either pedal axle to the arc swept by the tyre or mudguard, whichever results in the least clearance? The toe clearance, C, without foot retention for different bicycle types is as follows: is it 100 mm for city and trekking bicycles, 89 mm for young adult bicycles, 100 mm for mountain bicycles, and 100 mm for racing bicycles? And with foot retention, is the toe clearance 89 mm across all types?

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4.13.3 Pedal â€” Static Strength Test

4.13.4 Pedal â€” Impact Test

4.13.5 Pedal â€” Dynamic Durability Test

4.13.6 Drive System â€” Static Strength Test

4.13.7 Crank Assembly â€” Fatigue Test - 4.13.7.1 Requirement

4.13.7.2 Special Requirements For Mountain Bicycles

1. For mountain bicycles, are two types of fatigue tests specified: one with the cranks positioned at 45° to the horizontal to simulate forces due to pedaling, and the second with the cranks at 30° to the horizontal to simulate forces from the rider standing on the pedals during descents?

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4.14.1 Drive-chain

2. Does the chain conform to the tensile strength and push-out force requirements of ISO 9633, with the tension strength for racing bikes being higher than 9000 N? Is the yield point, maximum strength value, and push-out force recorded during the test?

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4.14.2 Drive Belt

4.15.1 Requirements

1. Should city, trekking, and young adult bicycles be equipped with a chain wheel disc or drive pulley disc that conforms to 4.15.2, a chain and drive belt protective device that conforms to 4.15.3, or, if fitted with positive foot-retention devices on the pedals, a combined front gear-change guide that conforms to 4.15.4?

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4.15.2 Chain-wheel Disc And Drive Pulley Disc Diameter

2. Does a drive pulley disc exceed the diameter of the front pulley by not less than 10 mm, and in cases where the crank and chain wheel or crank and front pulley are too close together to accommodate a full disc, can a partial disc be fitted that closely abuts the crank?

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4.15.3 Chain And Drive Belt Protective Device

1. Does a chain protective device, as a minimum, shield the side plates and top surface of the chain and the chain wheel for at least 25 mm rearwards along the chain from the point where the chain wheel teeth first pass between the side plates of the chain, and forwards around the outer chain wheel to a horizontal line passing through the bottom-bracket axle center?

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2. For a drive belt protective device, does it shield the side and top surface of the drive belt and the front pulley for at least 25 mm rearwards along the drive belt from where the tip circle of the pulley intersects the tip line of the belt and forwards around the front pulley to a horizontal line through the bottom-bracket axle center?

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4.15.4 Combined Front Gear-Change Guide

1. When the chain is in the outer gear position, is there some portion of the combined front gear-change guide above the chain in the region 25 mm from where the chain wheel first passes between the side plates of the chain, parallel to the chain side plates in the direction towards the rear wheel?

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4.16.1 Limiting Dimensions

4.16.2 Seat Post â€” Insertion-depth Mark Or Positive Stop

1. Does the seat post have a permanent, transverse mark indicating the minimum insertion depth into the frame, located at a specified distance from the bottom of the seat post? Alternatively, does it incorporate a permanent stop to prevent it from being drawn out of the frame beyond the specified insertion depth?

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4.16.3 Saddle/Seat Post â€” Security Test - 4.16.3.1 Saddles With Adjustment Clamps

4.16.3.2 Saddles Without Adjustment Clamps

4.16.4 Saddle â€” Static Strength Test

4.16.5 Saddle And Seat Post Clamp â€” Fatigue Test

4.16.6 Seat Post â€” Fatigue Test

4.16.6.1 Requirement For Stage 1 - 4.16.6.1.1 Seat Post Without Suspension System

4.16.6.1.2 Seat Post With Suspension System

4.16.6.2.2 Seat Post With Suspension System

4.1 Toxicity

4.17 Spoke Protector

1. Should bicycles for young adults and city or trekking bicycles with multiple free-wheel/cassette sprockets be fitted with a spoke-protector guard to prevent the chain from interfering with or stopping the rotation of the wheel due to improper adjustment or damage?

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4.2 Sharp Edges

4.18 Luggage Carriers

4.3.1 Security Of Screws

4.3.2 Minimum Failure Torque

4.3.3 Folding Bicycle Mechanism

4.19 Road Test Of A Fully Assembled Bicycle

2. Does the bicycle exhibit stable handling in braking, turning, and steering, allowing riding with one hand removed from the handlebar without difficulty or hazard? If the bicycle has a luggage carrier, is the test carried out with the maximum load capacity indicated on it?

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4.4 Crack Detection Methods

4.20.1 General

4.20.2 Wiring Harness

4.20.3 Lighting Systems

4.20.4 Reflectors

4.20.4.1 Rear Reflectors

4.20.4.2 Side Reflectors

1. Do the retro-reflective devices on the sides of the bicycle either consist of reflectors fitted on both the front and rear halves, with at least one mounted on the spokes, or be a continuous circle of reflective material applied to both sides of each wheel within 10 cm of the outer diameter of the tire?

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4.20.4.3 Front Reflectors

4.20.4.4 Pedal Reflectors

4.21 Warning Device

4.5 Protrusions

5. Manufacturerâ€™s Instructions

2. Has preparation for riding, including how to measure and adjust the saddle height to suit the rider, with an explanation of the insertion-depth warning marks on the seat post and handlebar stem, been included? Is there clear information on which lever operates the front brake, which lever operates the rear brake, and the presence of any brake-power modulators, along with an explanation of their function and adjustment? Is the correct method of using a back-pedal brake, if fitted, also detailed?

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21. Has there been care guidance for the wheel rims and a clear explanation of any danger of rim wear? For composite rims where wear damage can be invisible, does the manufacturer explain the consequences of rim wear and how the cyclist can assess the degree of wear or recommend returning the composite rim to the manufacturer for inspection?

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4.6.1 Braking Systems

4.6.2 Hand-Operated Brakes - 4.6.2.1 Brake Lever Position

4.6.2 Hand-Operated Brakes - 4.6.2.2 Brake Lever Grip Dimensions

1. Do the dimensions of the brake lever cover a distance of not less than 40mm for contact with the rider’s fingers and the handlebar and do they conform to the following: on bicycles on which the minimum intended height of the saddle is 635 mm or more, d shall not exceed 90 mm on bicycles on which the minimum intended height of the saddle is less than 635 mm, d shall not exceed 75 mm

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4.6.3 Attachment Of Brake Assembly And Cable Requirements

1. Do cable pinch bolts prevent severing any of the cable strands when assembled according to the manufacturer’s instructions, and do they ensure that no part of the brake mechanism inadvertently inhibits wheel rotation in the event of a cable failure? Is the cable end protected with a cap that withstands a removal force of not less than 20 N or treated to prevent unravelling?

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4.6.4 Brake-block And Brake-pad Assemblies â€” Security Test

4.6.5 Brake Adjustment

1. Is each brake equipped with an adjustment mechanism, either manual or automatic, that allows adjustment to an efficient operating position until the friction material requires replacement, and does the friction material contact only the intended braking surface when correctly adjusted? For bicycles with rod brakes, do the brake blocks avoid contact with the rim when the handlebars are set at a 60° angle?

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4.6.6 Hand-operated Braking System â€” Strength Test

4.6.7 Back-pedal Braking System â€” Strength Test - 4.6.7.1 General

1. If a back-pedal braking system is fitted, does the brake function when the operator applies force to the pedal in the opposite direction to the drive force, regardless of drive gear positions or adjustments, and is the differential between the drive and brake positions of the crank not exceeding 60°?

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4.6.7 Back-pedal Braking System â€” Strength Test -4.6.7.2 Requirement

4.6.8 Braking Performance - 4.6.8.1 General

4.6.8.1.1 Track Test

2. For City and trekking bicycles, under dry conditions, does it achieve a maximum corrected braking distance of 7 m with both brakes and 15 m with the rear brake only at a velocity of 25 km/h? Under wet conditions, does it meet the distances of 5 m with both brakes and 10 m with the rear brake only at a velocity of 16 km/h?

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3. For Young adult bicycles, under dry conditions, does it achieve a maximum corrected braking distance of 7 m with both brakes and 15 m with the rear brake only at a velocity of 25 km/h? Under wet conditions, does it meet the distances of 5 m with both brakes and 10 m with the rear brake only at a velocity of 16 km/h?

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4. For Mountain bicycles, under dry conditions, does it achieve a maximum corrected braking distance of 6 m with both brakes and 10 m with the rear brake only at a velocity of 25 km/h? Under wet conditions, does it meet the distances of 5 m with both brakes and 10 m with the rear brake only at a velocity of 16 km/h?

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5. For Racing bicycles, under dry conditions, does it achieve a maximum corrected braking distance of 6 m with both brakes and 12 m with the rear brake only at a velocity of 25 km/h? Under wet conditions, does it meet the distances of 5 m with both brakes and 10 m with the rear brake only at a velocity of 16 km/h?

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4.6.8.1.2 Machine Test

2. For City and trekking bicycles, under dry conditions, does it achieve a minimum braking performance value of 340 N with the front brake only and 220 N with the rear brake only? Under wet conditions, does it achieve 264 N with the front brake only and 168 N with the rear brake only?

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3. For Young adult bicycles, under dry conditions, does it achieve a minimum braking performance value of 204 N with the front brake only and 132 N with the rear brake only? Under wet conditions, does it achieve 159 N with the front brake only and 101 N with the rear brake only?

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4. For Mountain bicycles, under dry conditions, does it achieve a minimum braking performance value of 425 N with the front brake only and 280 N with the rear brake only? Under wet conditions, does it achieve 264 N with the front brake only and 168 N with the rear brake only?

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5. For Racing bicycles, under dry conditions, does it achieve a minimum braking performance value of 425 N with the front brake only and 260 N with the rear brake only? Under wet conditions, does it achieve 264 N with the front brake only and 168 N with the rear brake only?

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4.6.8.2 Smooth, Safe-stop Characteristics

4.6.8.3 Ratio Between Wet And Dry Braking Performance

4.6.9 Brakes â€” Heat-resistance Test - 4.6.9.1 General

1. Does this test apply to all disc and hub brakes, and to rim brakes only if they are known or suspected to contain thermoplastic materials? Are individual tests conducted for each brake, with only one test needed if the front and rear brakes are identical?

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4.6.9.2 Requirement

1. Does the brake lever remain above the handlebar grip, the operating force not exceed 180 N, and the braking force remain within 60 N to 115 N? Immediately after the test, do the brakes achieve at least 70% of the braking performance recorded at the highest operating force used in the performance tests)?

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6.1 Requirement

1. Is the frame visibly and permanently marked with a successive frame number at a readily visible location such as near the pedal-crank, the seat post, or the handlebar? Additionally, is it visibly and durably marked with the name of the manufacturer of the complete bicycles or the manufacturer’s representative?

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6.2 Durability Test

6.3 Safety Requirement

4.7.1 Handlebar â€” Dimensions

1. Does the handlebar have an overall width between 350 mm and 1,000 mm, unless otherwise dictated by national regulations? When the handlebar is at its highest normal riding position and the saddle at its lowest normal riding position, does the vertical distance from the center and top of the handlebar grips to the point where the saddle surface intersects with the seat post axis not exceed 400 mm?

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4.7.2 Handlebar Grips And Plugs

4.7.3 Handlebar Stem â€” Insertion-depth Mark Or Positive Stop

4.7.4 Handlebar Stem To Fork Steerer â€” Clamping Requirements

1. Is the distance between the top of the handlebar stem and the top of the fork steerer to which it is clamped not greater than 5 mm? Is the upper part of the fork steerer, where the handlebar stem is clamped, not threaded? Does this dimension ensure proper adjustment of the steering system?

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4.7.5 Steering Stability

1. Is the steering free to turn through at least an angle of θ1 on either side of the straight-ahead position, without any tight spots, stiffness, or slackness in the bearings when correctly adjusted? For the specified bicycle types along with their steering angle, does the minimum weight on the front wheel meet the requirement that at least 25% of the total mass of the bicycle and rider acts on it when the rider holds the handlebar grips and sits on the saddle in the most rearward positions? City and trekking bicycles - 60° Young adult bicycles - 60° Mountain bicycles - 30° Racing bicycles - 30°

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4.7.6 Steering Assembly â€” Static Strength And Security Tests - 4.7.6.1 Handlebar Stem â€” Lateral Bending Test -4.7.6.1.1 General

4.7.6.1.2 Requirement

4.7.6.2 Handlebar And Stem Assembly â€” Lateral Bending Test - 4.7.6.2.1 General

4.7.6.2.2 Requirement

1. For manufacturers producing handlebars and stems, is there no cracking or fracture of the handlebar, stem, or clamp-bolt, and is the permanent deformation at the test force application point not exceeding 15 mm? Is the ratio between weight and rigidity also recorded?

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4.7.6.3 Handlebar Stem â€” Forward Bending Test - 4.7.6.3.1 General

4.7.6.3.2 Requirement For Stage 1

4.7.6.3.3 Requirement For Stage 2

4.7.6.4 Handlebar To Handlebar Stem â€” Torsional Security Test

4.7.6.5 Handlebar Stem To Fork Steerer â€” Torsional Security Test

4.7.6.6 Bar End To Handlebar â€” Torsional Security Test

4.7.6.7 Aerodynamic Extensions To Handlebar â€” Torsional Security Test

4.7.7 Handlebar And Stem Assembly â€” Fatigue Test - 4.7.7.1 General

4.7.7.2 Requirement For Stage 1, Stage 2, Stage 3 And Stage 4

4.8.1 Suspension Frames â€” Special Requirements

4.8.2 Frame â€” Impact Test (Falling Mass)

4.8.3 Frame And Front Fork Assembly â€” Impact Test (Falling Frame)

1. Are there no visible cracks or fractures in the frame and fork assembly, and after the second impact, is there no separation of any parts of the suspension system? Additionally, does the permanent deformation measured between the axis of the wheel axles not exceed the following which are 60 mm for city, young adult, and mountain bicycles, and 15 mm for racing bicycles?

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4.8.4 Frame â€” Fatigue Test With Pedalling Forces

4.8.6 Frame â€” Fatigue Test With Horizontal Forces

4.8.6 Frame â€” Fatigue Test With A Vertical Force

4.8.7 Folding Mechanism Â- Special Requirements

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ISO 4210:2014 Audit Checklist

Use the ISO Audit 4210:2014 Checklist to evaluate compliance with safety and performance standards for bicycles, ensuring quality and regulatory adherence.

1. Do sections 4.9.1, 4.9.2, 4.9.4, 4.9.5, and 4.9.6 apply to all fork types?

2. In strength tests (4.9.4, 4.9.5, 4.9.6, and 4.9.7), is a suspension fork tested in its free, uncompressed length?

1. Are slots or means for locating the wheel axle ensure that when the axle is firmly positioned, the front wheel remains central within the fork?

2. Do the front fork and wheel meet the requirements of 4.10.4 and 4.10.5?

1. Does the tyre not contact the crown of the fork, nor should components separate?

1. Is there no detachment or loosening of any assembly parts, and do tubular components of any fork leg not separate under test force?

1. Are there no fractures or visible cracks in the fork, with permanent deformation not exceeding 10 mm? Is the ratio between weight and rigidity recorded?

1. If there are any fractures or if permanent deformation exceeds 45 mm, does the fork fail? If it meets initial criteria, does it undergo two further tests (5.4.2 and 5.4.3) with no fractures and no relative movement between the steerer and crown?

1. Are there no fractures, and does permanent deformation not exceed 45 mm for forks with composite parts? If it passes, must it undergo the torque test in 5.4.3?

1. Are there no fractures, and does permanent deformation not exceed 45 mm? For composite forks, does peak-to-peak displacement at test points not increase by more than 20% for rigid forks or 40% for suspension forks? Is the test conducted in two stages in the same assembly?

1. Are there no fractures or visible cracks in any part of the fork, and is the ratio between weight and rigidity recorded?

1. Are there no fractures or visible cracks, and for suspension forks, do no parts separate? Is the test conducted in two stages in the same assembly?

1. Does this test apply to forks where the blades and/or steerer are secured by methods other than welding or brazing? Can it be combined with the wheel retention test in 4.10.4?

1. Is there no detachment or loosening of any assembly parts?

1. Are the wheels secured to the bicycle frame and fork such that when adjusted to the manufacturer’s instructions they comply with 4.10.4.2, 4.10.4.3, and 4.10.5?

2. Do wheel nuts have a minimum removal torque of 70 % of the manufacturer’s recommended tightening torque?

3. Where quick‐release axle devices are used, do they comply with 4.10.?

4. Do the quick‐release devices neither lost nor fastening not cause interference in the running wheel assembly at bicycle complete assembled state?

1. Is there no relative motion between the axle and the front fork/frame?

1. Is a bicycle equipped with a secondary retention system that retains the front wheel in the drop-outs when the primary retention system is in the open (unlocked) position?

3. When quick-release is fitted, does the wheel not detach from the front fork when a force of 100 N is applied radially outwards, in line with the drop-out slots, and maintained for 1 min, with the quick-release lever fully open and the brake system disconnected or released?

1. Does any quick-release device have the following operating features:

2. When the forces specified in items c), d), and e) are applied, are they applied 5 mm from the tip end of the lever?

1. Are non-pneumatic tyres excluded from the requirements of 4.11.2, 4.11.3, and 4.11.4?

1. Is it recommended that the minimum inflation pressure specified by the tyre manufacturer also be permanently marked on the side wall of the tyre?

1. Do tyres that comply with the requirements of ISO 5775‐1 and rims that comply with the requirements of ISO 5775‐2 indicate compatibility, and does the tyre, tube, and tape remain compatible with the rim design when inflated to 110 % of the maximum inflation pressure for not less than 5 min?

1. Are tubular tyres required to be compatible with the rim design, and are instructions for the correct gluing technique provided in the bicycle or wheel assembly instructions of the manufacturer?

1. When the rim forms part of a braking system and there is a danger of failure due to wear, is the rider made aware of this danger by durable and legible marking on the rim, in an area not obscured by the tyre?

2. For rims made of composite materials, does the manufacturer include warnings of the danger of rim failure caused by wear of the braking surfaces in the manufacturer’s instructions?

1. Does this requirement ensure that wheels made from composite materials subjected to high temperature conditions (i.e. such as car storage in direct sunlight) do not suffer concealed damage that could subsequently affect the safety performance of the wheel during normal use?

1. If the front mudguard is fitted, when tested by the method described in the two-stage tests, does the front mudguard not prevent rotation of the wheel or obstruct the steering?

1. Is the tread surface of a pedal secured against movement within the pedal assembly?

1. Do pedals intended to be used without toe-clips, or for optional use with toe clips, have:

1. Do pedals designed to be used only with toe clips or shoe-retention devices have toe clips or shoe-retention devices securely attached, and do they not comply with the requirements of 4.13.1.2 items a) and b)?

1. With the bicycle unladen, is the pedal at its lowest point and the tread surface of the pedal parallel to the ground and uppermost where it has only one tread surface?

3. When a bicycle is equipped with a suspension system, is this measurement taken with the suspension adjusted to the softest condition and with the bicycle depressed to simulate a rider weighing 80 kg (or 40 kg for young adult bicycles)?

1. Is there no evidence of fractures, visible cracks, or distortion of the pedal or spindle that could affect their operation?

1. Is there no evidence of fractures of any part of the pedal body, the pedal spindle, or any failure of the bearing system?

1. Is there no evidence of fractures or visible cracking of any part of the pedal, the pedal spindle, or any failure of the bearing system?

1. a) For a drive system with a chain, is there no fracture of any component of the drive system, and does the drive capability remain intact?

2. b) For a drive system with a belt, when tested by the method described in, is there no fracture of any component of the drive system, and does the belt not slip, skip, fracture, or cause any loss in drive capability?

3. Is smooth sliding between pulleys and the belt allowed at a rate not exceeding 1°/s at the drive axis?

1. Is there no evidence of fractures or visible cracks in the cranks, the bottom-bracket spindle, or any of the attachment features, or loosening or detachment of the chain wheel from the crank?

2. For composite cranks, do the running displacements (peak-to-peak values) of either crank at the point where the test forces are applied not increase by more than 20% of the initial value?

1. For mountain bicycles, are two types of fatigue tests specified: one with the cranks positioned at 45° to the horizontal to simulate forces due to pedaling, and the second with the cranks at 30° to the horizontal to simulate forces from the rider standing on the pedals during descents?

2. Is there no evidence of fractures or visible cracks in the cranks, the bottom-bracket spindle, or any of the attachment features, or loosening or detachment of the chain wheel from the crank?

3. For composite cranks, do the running displacements at the test force application point not increase by more than 20% of the initial value?

1. When a chain-drive is used to transmit motive force, does the chain operate over the front and rear sprockets without binding?

2. Does the chain conform to the tensile strength and push-out force requirements of ISO 9633, with the tension strength for racing bikes being higher than 9000 N? Is the yield point, maximum strength value, and push-out force recorded during the test?

1. When a belt-drive is used, does the drive belt operate over the front and rear pulleys without binding? Is there no evidence of cracking, fracture, or delamination of the belt drive?

2. Can mountain and racing bicycles also be equipped with one of the above?

1. Does a chain-wheel disc exceed the diameter of the outer chain wheel, when measured across the tips of the teeth, by not less than 10 mm?

2. Does a drive pulley disc exceed the diameter of the front pulley by not less than 10 mm, and in cases where the crank and chain wheel or crank and front pulley are too close together to accommodate a full disc, can a partial disc be fitted that closely abuts the crank?

1. When the chain is in the outer gear position, is there some portion of the combined front gear-change guide above the chain in the region 25 mm from where the chain wheel first passes between the side plates of the chain, parallel to the chain side plates in the direction towards the rear wheel?

2. Additionally, is there some portion of the combined front gear-change guide below the chain beyond 25 mm from the same point, also parallel to the chain side plates towards the rear wheel?

1. Is no part of the saddle, saddle supports, or accessories more than 125 mm above the top saddle surface at the point where the saddle surface intersects with the seat post axis?

1. Is there no movement of the saddle adjustment clamp with respect to the seat post or the seat post with respect to the frame, and is there any failure of the saddle, adjustment clamp, or seat post?

1. Are saddles that pivot vertically and are not clamped allowed to move within design parameters without any component failures?

1. Does the saddle cover and/or plastic molding remain engaged with the saddle chassis, with no cracking or permanent distortion of the saddle assembly?

1. Is there no evidence of fractures or visible cracks in the seat post or saddle, and is there no loosening of the clamp?

1. Is the test conducted in two stages on the same assembly, as per sections 4.16.6.1 and 4.16.6.2?

1. Are there no visible cracks or fractures in the seat post, or any bolt failure?

2. For composite seat posts, do the running displacements at the point of applied test forces not increase by more than 20% of the initial value?

1. Are there no visible cracks or fractures in the seat post, or any bolt failure, and is the design such that the two main parts do not separate in the event of suspension system failure?

1. Is there no evidence of fractures in the seat post, and is the design such that in the event of suspension system failure, the two main parts do not separate, nor does the upper part become free to swivel in the lower part?

1. Do any items that come into intimate contact with the rider, causing potential hazards due to sucking or licking, comply with national regulations specific to children’s products?

1. Should bicycles for young adults and city or trekking bicycles with multiple free-wheel/cassette sprockets be fitted with a spoke-protector guard to prevent the chain from interfering with or stopping the rotation of the wheel due to improper adjustment or damage?

2. Can other types of bicycles covered also be fitted with a spoke protector?

1. Are exposed edges that could come into contact with the rider’s hands, legs, etc., during normal riding, handling, or maintenance not sharp and processed to avoid sharpness?

1. If luggage carriers are fitted or provided, do they need to comply with ISO 11243?

1. Are screws used in the assembly of suspension systems, brackets for electric generators, brake mechanisms, mudguards, and the saddle to the seat-post provided with suitable locking devices?

1. Is the minimum failure torque for bolted joints fastening handlebars, handlebar stems, bar ends, saddle, and seat-post at least 50% greater than the manufacturer’s recommended tightening torque?

1. If a folding bicycle mechanism is provided, is it designed to allow the bicycle to be locked for use in a simple, stable, and safe manner without causing damage to any cables?

1. Is there no system or component failure, and is there no loosening or misalignment of the saddle, handlebar, controls, or reflectors?

2. Does the bicycle exhibit stable handling in braking, turning, and steering, allowing riding with one hand removed from the handlebar without difficulty or hazard? If the bicycle has a luggage carrier, is the test carried out with the maximum load capacity indicated on it?

1. Are standardized methods used to emphasize the presence of cracks where visible cracks are specified as criteria for failure in tests?

1. Are bicycles required to be equipped with reflectors at the front, rear, and sides, and do they need to conform to national regulations for lighting systems and reflectors in the country where the bicycle is marketed?

1. When a wiring harness is fitted, is it positioned to avoid damage from moving parts or sharp edges, and do all connections need to withstand a tensile force of 10 N in any direction?