ISO/FDIS 20500-1

ISO/TC 195
Secretariat: SAC
Date: 2024-10-302025-01-16
Mobile road construction machinery — Safety —
Part 1:
Common requirements
Machines mobiles pour la construction de routes — Sécurité —
Partie 1: Prescriptions communes
FDIS stage
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ii
Contents
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 4
3.1 General . 4
3.2 Machine mass . 7
3.3 Handle starting equipment . 8
3.4 Liquid gas units . 10
3.5 Moveable operator´s stations . 11
3.6 Contamination protective systems . 11
4 Safety requirements and/or protective/risk reduction measures . 12
4.1 General . 12
4.2 Visibility . 13
4.3 Operation and handling . 14
4.4 Operator stations. 16
4.5 Operator's seat . 21
4.6 Controls and indicators . 24
4.7 Starting/stopping . 26
4.8 Conveyors . 27
4.9 Access systems to the operator's station and to maintenance points . 30
4.10 Protection . 30
4.11 Pressurized systems . 32
4.12 Tanks (e.g. fuel, hydraulic and pressure vessels) . 32
4.13 Fire protection . 33
4.14 Hot surfaces . 33
4.15 Signal devices and warning signs . 33
4.16 Liquid gas units . 33
4.17 Electrical and electronic systems . 34
4.18 Electro-magnetic compatibility (EMC) . 35
4.19 Noise . 36
4.20 Vibration . 36
5 Verification of the safety requirements and/or protective/risk reduction measures . 37
6 Information for use . 41
6.1 Warning signals and devices . 41
6.2 Operator’s manual . 41
6.3 Marking . 44
Annex A (informative) List of mobile road construction machinery . 45
Annex B (normative) Handle starting equipment . 46
Annex C (normative) Liquid gas units on mobile road construction machinery . 50
Annex D (normative) Requirements for moveable operator's station . 55
Annex E (normative) Contamination protective systems . 57
Annex F (normative) Performance levels of the safety related parts of control systems (SRP/CS)66
Annex G (normative) Visibility test requirements for ride-on mobile road construction
machinery with a standing operator . 74
iii
Annex H (informative) Example of noise emission declaration . 75
Annex I (informative) List of significant hazards . 77
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 81
Bibliography . 91

iv
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO 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, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of
ISO documentsdocument should be noted. This document was drafted in accordance with the editorial rules
of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawnISO draws attention to the possibility that some of the elementsimplementation of this
document may beinvolve the subjectuse of (a) patent(s). ISO takes no position concerning the evidence,
validity or applicability of any claimed patent rights in respect thereof. As of the date of publication of this
document, ISO had not received notice of (a) patent(s) which may be required to implement this document.
However, implementers are cautioned that this may not represent the latest information, which may be
obtained from the patent database available at www.iso.org/patents. ISO shall not be held responsible for
identifying any or all such patent rights. Details of any patent rights identified during the development of the
document will be in the Introduction and/or on the ISO list of patent declarations received (see ).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 195, Building construction machinery and
equipment, in collaboration with the European Committee for Standardization (CEN) Technical Committee
CEN/TC 151, Construction equipment and building material machines - Safety, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 20500 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
v
Introduction
The structure of safety standards in the field of machinery is as follows.
a) Type-A standards (basis standards) give basic concepts, principles for design and general aspects that can
be applied to machinery.
b) Type-B standards (generic safety standards) dealing with one or more safety aspect(s) or one or more
type(s) of safeguards that can be used across a wide range of machinery:
— type-B1 standards on particular safety aspects (e.g. safety distances, surface temperature, noise);
— type-B2 standards on safeguards (e.g. two-hands controls, interlocking devices, pressure sensitive
devices, guards).
c) Type-C standards (machinery safety standards) dealing with detailed safety requirements for a particular
machine or group of machines.
This document is a type-C standard as stated in ISO 12100.
This document is of relevance, in particular, for the following stakeholder groups representing the market
players with regard to machinery safety:
— machine manufacturers (small, medium and large enterprises);
— health and safety bodies (regulators, accident prevention organisations, market surveillance, etc.).
Others can be affected by the level of machinery safety achieved with the means of the document by the above-
mentioned stakeholder groups:
— machine users/employers (small, medium and large enterprises);
— machine users/employees (small, medium and large enterprises);
— service providers, e.g. for maintenance (small, medium and large enterprises);
— consumers (in case of machinery intended for use by consumers).
The above-mentioned stakeholder groups have been given the possibility to participate at the drafting process
of this document.
The machinery concerned and the extent to which hazards, hazardous situations or hazardous events are
covered are indicated in the Scope of this document.
When requirements of this type-C standard are different from those which are stated in type-A or type-B
standards, the requirements of this type-C standard take precedence over the requirements of the other
standards for machines that have been designed and built according to the requirements of this type-C
standard.
vi
Mobile road construction machinery — Safety —
Part 1:
Common requirements
1 Scope
This document specifies the common safety requirements for mobile road construction machinery. The ISO
20500 series is applicable to mobile road construction machinery as listed in Annex A.
NOTE 1 For travelling on public roads, the national roading regulations apply (e.g. braking, steering, lighting).
This document deals with significant hazards, hazardous situations and events relevant to mobile road
construction machinery, when used as intended and under conditions foreseen, but also taking into account
any reasonably foreseeable misuse thereof (see Annex H).
NOTE 2 The requirements specified in this document are common to two or more families of mobile road construction
machinery.
This document gives the common safety requirements for mobile road construction machinery and is
intended to be used in conjunction with ISO 20500-2 to ISO 20500-7. These machine specific parts
(ISO 20500-2 to ISO 20500-7) do not repeat the requirements from this document but supplement or modify
the requirements for the family in question.
This document does not deal with hazards related to transport of dangerous goods by road.
Lightning as a significant and relevant hazard is not covered in this document.
This document specifies the appropriate technical measures to eliminate or reduce risks arising from the
significant hazards as specified in Annex H.
This document is not applicable to mobile road construction machinery manufactured before the date of its
publication.
As a general principle, dimensions are used according to ISO 3411:2007 in order to cover 5 to 95 percentile of
machine operators.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 143:2021, Respiratory protective devices — Particle filters — Requirements, testing, marking
EN 12021:2014, Respiratory equipment — Compressed gases for breathing apparatus
ISO 2860:1992, Earth-moving machinery — Minimum access dimensions
ISO 2867:2011, Earth-moving machinery — Access systems
ISO 3411:2007, Earth-moving machinery — Physical dimensions of operators and minimum operator space
envelope
ISO 3450:2011, Earth-moving machinery — Wheeled or high-speed rubber-tracked machines — Performance
requirements and test procedures for brake systems
ISO 3457:2003, Earth-moving machinery — Guards — Definitions and requirements
ISO 3795:1989, Road vehicles, and tractors and machinery for agriculture and forestry — Determination of
burning behaviour of interior materials
ISO 3864-1:2011, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for safety
signs and safety markings
ISO 3864-2:2016, Graphical symbols — Safety colours and safety signs — Part 2: Design principles for product
safety labels
ISO 3864-3:2012, Graphical symbols — Safety colours and safety signs — Part 3: Design principles for graphical
symbols for use in safety signs
ISO 3864-4:2011, Graphical symbols — Safety colours and safety signs — Part 4: Colorimetric and photometric
properties of safety sign materials
ISO 4413:2010, Hydraulic fluid power — General rules and safety requirements for systems and their
components
ISO 4414:2010, Pneumatic fluid power — General rules and safety requirements for systems and their
components
ISO 4871:1996, Acoustics — Declaration and verification of noise emission values of machinery and equipment
ISO 5006:2017, Earth-moving machinery — Operator's field of view — Test method and performance criteria
ISO 5010:2019, Earth-moving machinery — Wheeled machines — Steering requirements
ISO 5353:1995, Earth-moving machinery, and tractors and machinery for agriculture and forestry — Seat index
point
ISO 5673-1:2005, Agricultural tractors and machinery — Power take-off drive shafts and power-input
connection — Part 1: General manufacturing and safety requirements
ISO 6405-1:2017, Earth-moving machinery — Symbols for operator controls and other displays — Part 1:
Common symbols
ISO 6405-1:2017+/AMD 1:2022, Earth-moving machinery — Symbols for operator controls and other
displays — Part 1: Common symbols — Amendment 1: Additional symbols
ISO 6405-2:2017+AMD 1:2022, Earth-moving machinery — Symbols for operator controls and other displays —
Part 2: Symbols for specific machines, equipment and accessories — Amendment 1: Additional symbols
ISO 6682:1986+AMD 1:1989, Earth-moving machinery — Zones of comfort and reach for controls
ISO 6750-1:2019, Earth-moving machinery — Operator's manual — Part 1: Contents and format
ISO 7010:2019, Graphical symbols — Safety colours and safety signs — Registered safety signs
ISO 7096:2020, Earth-moving machinery — Laboratory evaluation of operator seat vibration
ISO 7165:2017, Fire fighting — Portable fire extinguishers — Performance and construction
ISO 8643:2017, Earth-moving machinery — Hydraulic excavator and backhoe loader lowering control device —
Requirements and tests
ISO 9244:2008+AMD 1:2016, Earth-moving machinery — Machine safety labels — General principles
ISO 9533:2010, Earth-moving machinery — Machine-mounted audible travel alarms and forward horns — Test
methods and performance criteria
ISO 10263-2:2009, Earth-moving machinery — Operator enclosure environment — Part 2: Air filter element test
method
ISO 10263-4:2009, Earth-moving machinery — Operator enclosure environment — Part 4: Heating, ventilating
and air conditioning (HVAC) test method and performance
ISO 10264:1990, Earth-moving machinery — Key-locked starting systems
ISO 10265:2008, Earth-moving machinery — Crawler machines — Performance requirements and test
procedures for braking systems
ISO 10532:1995+AMD 1:2004+COR 1:2006, Earth-moving machinery — Machine-mounted retrieval device —
Performance requirements
ISO 10570:2004, Earth-moving machinery — Articulated frame lock — Performance requirements
ISO 10968:2020, Earth-moving machinery — Operator's controls
ISO 11112:1995+AMD 1:2001, Earth-moving machinery — Operator’s seat — Dimensions and requirements
ISO 11862:1993, Earth-moving machinery — Auxiliary starting aid electrical connector
ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
ISO 12508:1994, Earth-moving machinery — Operator station and maintenance areas — Bluntness of edges
ISO 12509:20042023, Earth-moving machinery — Lighting, signalling and marking lights, and reflex-reflector
devices
ISO 13333:1994, Earth-moving machinery — Dumper body support and operator's cab tilt support devices
ISO 13732-1:2006, Ergonomics of the thermal environment — Methods for the assessment of human responses
to contact with surfaces — Part 1: Hot surfaces
ISO 13766-1:2018, Earth-moving and building construction machinery — Electromagnetic compatibility (EMC)
of machines with internal electrical power supply — Part 1: General EMC requirements under typical
electromagnetic environmental conditions
ISO 13766-2:2018, Earth-moving and building construction machinery — Electromagnetic compatibility (EMC)
of machines with internal electrical power supply — Part 2: Additional EMC requirements for functional safety
ISO 13849-1:2023, Safety of machinery — Safety-related parts of control systems — Part 1: General principles
for design
ISO 13850:2015, Safety of machinery — Emergency stop function — Principles for design
ISO 13856-1:2013, Safety of machinery — Pressure-sensitive protective devices — Part 1: General principles for
design and testing of pressure-sensitive mats and pressure-sensitive floors
ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by upper and
lower limbs
ISO 14119:20132024, Safety of machinery — Interlocking devices associated with guards — Principles for
design and selection
ISO 14120:2015, Safety of machinery — Guards — General requirements for the design and construction of fixed
and movable guards
ISO 14990-3:2016, Earth-moving machinery — Electrical safety of machines utilizing electric drives and related
components and systems — Part 3: Particular requirements for self-powered machines
ISO 15817:2012, Earth-moving machinery — Safety requirements for remote operator control systems
ISO 15818:2017, Earth-moving machinery — Lifting and tying-down attachment points — Performance
requirements
ISO 16001:2017, Earth-moving machinery — Object detection systems and visibility aids — Performance
requirements and tests
ISO 17063:2003, Earth-moving machinery — Braking systems of pedestrian-controlled machines —
Performance requirements and test procedures
ISO 29463-5:2022, High-efficiency filters and filter media for removing particles in air — Part 5: Test method
for filter elements
IEC 60204-1:2016+AMD1:2021, CSV, Safety of machinery — Electrical equipment of machines — Part 1:
General requirements
IEC 60364-4-41:2005+AMD1:2017, CSV, Low-voltage electrical installations — Part 4-41: Protection for
safety — Protection against electric shock
IEC 60364-5-55:2011+AMD1:2012, CSV, Electrical installations of buildings — Part 5-55: Selection and erection
of electrical equipment — Other equipment
IEC 60529:1989+AMD1:1999+AMD2:2013, CSV, Degrees of protection provided by enclosures (IP Code)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12100:2010 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1 General
3.1.1 3.1.1
mobile road construction machinery
machine intended for either one of, or a combination of construction, maintenance and marking of roads or
other road like surfaces
Note 1 to entry: The machines are listed in Table A.1.
3.1.1.1 3.1.1.1
compact machine
mobile road construction machinery (3.1.1), except for vibratory plates and rammers, having an operating mass
(3.2.1) of 4 500 kg or less
Note 1 to entry: See ISO 20500-4 for vibratory plates and rammers.
3.1.1.2 3.1.1.2
direct-control machine
self-propelled mobile road construction machinery (3.1.1) where the machine is controlled by an operator in
physical contact with the machine
[SOURCE: ISO 6165:2022, 3.1.2, modified — The term "earth-moving machinery" has been replaced by
"mobile road construction machinery".]
3.1.1.3 3.1.1.3
ride-on machine
direct-control machine (3.1.1.2) where the control devices are located on the machine and the machine is
controlled by a seated or standing operator on the machine
[SOURCE: ISO 6165:2022, 3.1.2.1]
3.1.1.4 3.1.1.4
remote-control machine
self-propelled mobile road construction machinery (3.1.1) where the machine is controlled by the transmission
of signals from a control box (transmitter) that is not located on the machine to a receiving unit (receiver)
located on the machine
Note 1 to entry: The remote control can either be wireless or by wire.
[SOURCE: ISO 6165:2022, 3.1.3, modified — The term "earth-moving machinery" has been replaced by
"mobile road construction machinery".]
3.1.1.5 3.1.1.5
non-riding machine
direct-control machine (3.1.1.2) where the control devices are located on the machine and the machine is
controlled by a pedestrian operator (not carried on the machine) or a remote-control machine (3.1.1.4)
3.1.2 3.1.2
cab
enclosed structure mounted to mobile road construction machinery (3.1.2) surrounding the operator, including
glazing materials (e.g. glass, plastics) in the windows, doors and a windshield
Note 1 to entry: The cab can meet requirements for OPS (operator protective structures), for example, ROPS (roll-over
protective structure), FOPS (falling object protective structure).
3.1.3 3.1.3
canopy
overhead structure mounted to mobile road construction machinery (3.1.1) that covers in part or in whole the
operator station intended to protect the operator against weather conditions, e.g. rain or sun, UV radiation for
all positions of the operator’s station (3.1.7)
Note 1 to entry: The canopy can meet requirements for OPS (operator protective structures), for example, ROPS (roll-
over protective structure), FOPS (falling object protective structure).
3.1.4 3.1.4
equipment
set of components mounted onto the mobile road construction machine that allows an attachment (3.1.5) to
perform the primary design function of the machine
[SOURCE: ISO 6016:2008, 3.1.2, modified — Note 1 to entry has been removed.]
3.1.5 3.1.5
attachment
assembly of components that can be mounted onto the mobile road construction machine or equipment (3.1.4)
for specific use
Note 1 to entry: Note to entry: A tool is considered as an attachment.
[SOURCE: ISO 6016:2008, 3.1.4, modified — Note 1 to entry has been removedreplaced by a new one.]
Note to entry: A tool is considered as an attachment.

3.1.83.1.6 3.1.6
interchangeable equipment
attachment (3.1.5) used as an equipment (3.1.4) which, after the putting into service of a machine, is assembled
with the base machine by the operator in order to change its function or attribute a new function
Note 1 to entry: A tool is not considered as an interchangeable equipment.
Note 2 to entry: This definition is identical to the definition of "interchangeable equipment" as given in the European
Machinery Directive 2006/42/EC. For further reference, see CECE guideline "CECE guidance on the classification of
attachments to construction equipment for the machinery directive 2006/42/EC".
3.1.93.1.7 3.1.7
operator’s station
area on a ride-on machine (3.1.1.3) from which an operator controls the functions of the machine
3.1.103.1.8 3.1.8
operator’s place
area other than operator's station (3.1.7) as defined by the manufacturer from which an operator controls the
functions of the machine (e.g. work, travel functions, etc.)
3.1.113.1.9 3.1.9
nip point
point which occurs on the in-running side at the line of contact between the conveyor belt and rotating pulley
and in certain cases between the belt and an idler
3.1.123.1.10 3.1.10
nip guard
fixed guard inserted at a nip point (3.1.9) to directly safeguard that point by volume occupation
3.1.133.1.11 3.1.11
filament position center-point
FPCP
midpoint of the line between the light-bulb filaments
[SOURCE: ISO 5006:2017, 3.2 — Note 1 to entry has been modified for standing operator]
Note 1 to entry: See Figure 1.
Key
X distance of the FPCP to either side boundary of the standing platform
Y distance to the front side of the standing platform
1 standing platform
H height of the operator’s eyes above standing platform
FPCP filament position centre point
Figure 1 — Placement of the light source apparatus on the standing surface
[SOURCE: ISO 5006:2017, 3.2, modified — Note 1 to entry has been modified for standing operator.]
3.2 Machine mass
3.2.1 3.2.1
operating mass
OM
mass of the base machine, with equipment (3.1.4) and empty attachment (3.1.5) in the most usual
configuration as specified by the manufacturer, and with the operator (75 kg), full fuel tank and all fluid
systems (i.e. hydraulic oil, transmission oil, engine oil, engine coolant) at the levels specified by the
manufacturer and, when applicable, with half full material compartment (for example water, emulsion,
powder binder)
Note 1 to entry: The mass of the operator is not included for non-riding machines (3.1.1.5).
Note 2 to entry: Ballast mass at delivery can be included if specified by the manufacturer.
[SOURCE: ISO 6016:2008, 3.2.1, modified — At the end of the definition, "sprinkler water tank(s) half full" has
been replaced by "with half full material compartment (for example water, emulsion, powder binder)".]
3.2.2 3.2.2
gross machinery mass
GMM
maximum machine mass as approved by the manufacturer, which combines the operating mass (OM) (3.2.1)
of the machine with the heaviest combination of equipment (3.1.4) and attachments (3.1.5), the heaviest
combination of optional equipment, as specified by the manufacturer, the ballast mass and, when applicable,
full material compartment (for example water, emulsion, powder binder)
[SOURCE: ISO 6016:2008, 3.2.4, modified — Mentioning of "the rated payload (PL)" has been removed; "rated
ballast mass (BM)" has been replaced by "ballast mass"; "full sprinkler water tank(s)" has been replaced by
"full material compartment (for example water, emulsion, powder binder)".]
3.3 Handle starting equipment
3.3.1 3.3.1
handle starting equipment
equipment (3.1.4) for starting an internal combustion engine by the use of a handle, such that the required
torque for starting can be exercised upon the starting shaft by the operator
3.3.2 3.3.2
automatic disengagement device
device which automatically breaks the connection between the starting handle and the engine in the event of
kick-back (3.3.5), thus preventing the handle from being turned by the engine
3.3.3 3.3.3
guide
part of the handle starting equipment (3.3.1) which guides the starting handle during starting but prevents its
being thrown out accidentally after disengagement
3.3.4 3.3.4
kick-back limiter
part of the handle starting equipment (3.3.1) which, when used in accordance with the instructions and when
maintained correctly, prevents or limits the kick-back (3.3.5) travel to such an extent as to avoid the risk of
injury
3.3.5 3.3.5
kick-back
sudden change of direction of rotation of the starting handle, caused by compression or combustion pressure
when starting
3.3.6 3.3.6
disengagement travel
distance which the grip of the handle travels from the moment of change of direction up to the disengagement
of the handle from the starting shaft, measured at the centre of the grip
Note 1 to entry: See Figure B.1.
3.3.7 3.3.7
angle of disengagement
angle through which the shank of the starting handle turns from the moment of change of direction up to the
disengagement of the handle from the starting shaft
Note 1 to entry: See Figure 2.

Key
1 starting direction α1 disengagement angle (area of energy absorption)
A disengagement travel α angle of decrease in energy
B kick-back travel α kick-back angle
Figure 2 — Direction of rotation of crank when starting engine
3.3.8 3.3.8
kick-back travel
distance which the grip of the handle travels from the moment of change of direction until it comes to rest,
measured at the centre of the grip
3.3.9 3.3.9
kick-back angle
angle through which the shank of the starting handle turns from the moment of change of direction until it
comes to rest
3.4 Liquid gas units
3.4.1 3.4.1
liquid gas
flammable gas of propane, propene (propylene), butane, butene (butylene) and mixtures thereof
3.4.2 3.4.2
liquid gas unit
supply unit (3.4.2.1) or consumer unit (3.4.2.2) for liquid gas (3.4.1)
3.4.2.1 3.4.2.1
supply unit
equipment (3.1.4) consisting of all components, e.g. gas tanks, cylinders (bottles), propellant gas tanks,
vaporizer units, that are necessary to supply consumer units (3.4.2.2), including the controls and the shut-off
device
3.4.2.2 3.4.2.2
consumer unit
equipment (3.1.4) consisting of the consumer devices (3.4.3) for burning purposes, including the gas lines and
the equipment components after the main shut-off device (3.4.4)
3.4.3 3.4.3
consumer device
burner for use with vaporized gas and infrared burners
3.4.4 3.4.4
main shut-off device
device by means of which the total consumer unit (3.4.2.2) can be cut off from the supply unit (3.4.2.1)
Note 1 to entry: This can also be a tank shut-off valve.
3.4.5 3.4.5
connection flow value
rated gas consumption of a consumer unit (3.4.2.2) at rated thermal load
Note 1 to entry: This value is expressed in kg/h or g/h.
3.4.6 3.4.6
flame monitor
device which detects the presence or absence or break-away of the flame and triggers a function
3.4.7 3.4.7
heater bank
consumer unit (3.4.2.2) for area-warming or pre-heating of road surfaces
Note 1 to entry: See C.2.5.
Note 2 to entry: Heater banks consist of numerous infrared heaters in close configuration arranged on one level.
3.4.8 3.4.8
turbo gas furnace
furnace where the combustion air is supplied via a blower
3.5 Moveable operator´s stations
3.5.1 3.5.1
machine main frame
structure providing support to the machine main components (e.g. engine, hydraulic system) and on which,
among other components [e.g. work equipment (3.1.4), drive train], the operator’s station (3.1.7), including its
supporting structure, is mounted
3.5.2 3.5.2
elevating operator’s station
operator’s station (3.1.7) which can move in a vertical direction relative to the machine main frame (3.5.1)
3.5.3 3.5.3
tilting operator’s station
operator’s station (3.1.7) which can rotate around a horizontal axis perpendicular to the longitudinal axis of
the operator’s station
3.5.4 3.5.4
sliding operator’s station
operator’s station (3.1.7) which can move horizontally in either longitudinal and/or lateral direction relative
to the machine main frame (3.5.1)
Note 1 to entry: The direction of movement can be a combination of vertical and horizontal motion.
3.6 Contamination protective systems
3.6.1 3.6.1
contamination protective system
system that provides breathing air (3.6.14) to operator's stations (3.1.7) on mobile road construction machines
used in areas contaminated by dust particles
3.6.2 3.6.2
contaminated area
area where hazardous substances (3.6.3) or substances in concentrations over a non-hazardous to health
essential exposure can occur
3.6.3 3.6.3
hazardous substance
substance such as dust, vapor, gas and aerosol which can expose an operator to a risk of harm
3.6.4 3.6.4
protective ventilation system
device to provide breathing air (3.6.14)
Note 1 to entry: A protective ventilation system can be:
— a dust filter system; or
— a breathing compressed air system
3.6.5 3.6.5
prefilter
device to reduce the amount of particle before entering the dust filter unit (3.6.6)
Note 1 to entry: The filter efficiency is lower than the dust filter efficiency. The prefilter can be conducted as a mechanical
device, e. g. cyclone, or with a filter material.
3.6.6 3.6.6
dust filter unit
air handling device to provide air with a reduced amount of harmful, finely divided, airborne and sedimented
solid particles to the operator’s cab (3.1.2)
Note 1 to entry: The system contains the air recirculation unit (3.6.11), a control device and the dust filters.
3.6.7 3.6.7
breathing compressed air unit
air handling device supplying breathable air independent of the atmosphere outside the cab (3.1.2) and
consisting of:
— compressed air bottles, lines and fittings; or
— lines and fittings providing breathing air (3.6.14) to the operator's station (3.1.7)
3.6.8 3.6.8
filter casing
casing where gas or dust filters are placed
3.6.9 3.6.9
ambient air
air of the area where the machine is used
Note 1 to entry: It may contain harmful solids, liquid aerosols and/or gases.
3.6.10 3.6.10
monitoring device
device for monitoring and indicating the operating status and alarms of the protective ventilation unit
Note 1 to entry: It can be a stand-alone unit or an integrated part of the dash panel of the construction machine.
3.6.11 3.6.11
recirculation unit
air handling device which solely filters the air inside the cab (3.1.2) without taking fresh air
3.6.12 3.6.12
overpressure
pressure above the atmospheric pressure
3.6.13 3.6.13
filter element
folded pack of filtration media enclosed by a frame
3.6.14 3.6.14
breathing air
filtered ambient air (3.6.9) and filtered recirculating air or air from compressed air units
4 Safety requirements and/or protective/risk reduction measures
4.1 General
Mobile road construction machinery shall conform to the safety requirements and/or protective/risk
reduction measures of this clause, unless modified by requirements of the relevant specific part of the
ISO 20500 series. In addition, the machine shall be designed according to the principles of ISO 12100:2010 for
relevant but not significant hazards which are not dealt with by this document.
4.2 Visibility
4.2.1 Operator's field of view
Mobile road construction machines shall be designed so that the operator has sufficient visibility from the
operator’s station in relation to the travel and work areas of the machine that are necessary for the intended
use of the machine.
Ride-on mobile road construction machines shall meet the following requirements:
— the visibility test shall follow the principles described in ISO 5006:2017;
— for the setup of the machine, see specific parts;
— for ride-on machines with a standing operator, Annex G shall apply additionally;
— for machines designed for multiple operator positions (e.g. standing, seated, centred, left, right, front, rear,
up, down), it is sufficient to measure the most unfavourable operating position;
— for evaluation method and performance criteria, see specific parts;
— ISO 5006:2017, Table 1 and Table 2 of ISO 5006:2017dodo not apply.
Where hazards due to restricted visibility (according to ISO 5006:2017 and specific parts) exist/remain,
indirect visibility with, preferably CCTV (closed-circuit television) in accordance with ISO 16001:2017 and/or
mirrors shall be provided.
NOTE 1 Requirements for rear view mirrors can be found, for example, in ISO 14401-1:2009 and ISO 14401-2:2009.
NOTE 2 Object detection systems, for example, ultra-sonic warning device in accordance with ISO 16001:2017, can
additionally be provided.
ISO 5006:2017, 7.2 applies with the following addition:
Mirrors may be located in the 270° arc centred in front of the operator with the operator facing the front of
the machine (see Figure 3). Mirrors located behind the operator shall only be so placed to enable the operator
to see the area along the side of the machine.
Key
1 Operatoroperator
2 forward travelling direction
3 filament position centre point – FPCP
Figure 3 — Mirror location area
4.2.2 Lighting, signalling and marking lights and reflex-reflector devices
Self-propelled mobile road construction machines for ride-on operators shall be fitted with work lamps and
rear reflex reflector devices. Work lamps and reflex-reflector devices shall conform to ISO 12509:20042023.
If equipped, for other lighting, signalling and marking lights, see ISO 12509:20042023.
4.2.3 Electric socket for lighting
An electric socket (e.g. cigarette lighter) intended for the connection of a lighting device for service and
maintenance use shall be provided on mobile road construction machinery ≥ 4 500 kg and shall be accessible
according to 4.9. The design of the sockets shall prevent incorrect connection.
NOTE This requirement is fulfilled if a permanently connected maintenance light is provided.
Voltage of electrical socket shall be marked.
4.3 Operation and handling
4.3.1 Uncontrolled motion
Machine and equipment or attachment movement from the holding position, other than by actuation of the
controls by the operator, due to drift or creep (e.g. by leaking) or when power supply stops, shall be limited to
the extent that it cannot create a risk to exposed persons.
4.3.2 Towing away for recovery purposes, transportation and lifting
4.3.2.1 General
The devices for towing away for recovery purposes, tie-down and lifting may be the same if allowed by the
configuration of the machine. Requirements for towing are found in 4.3.2.2 to 4.3.2.4.
4.3.2.2 Towing away for recovery purposes/retrieval points
Mobile road construction machinery with an operating mass greater than 2 000 kg shall be equipped with
retrieval points (hooks, rings, ears) to allow retrieval out of possible danger-zone. Provisions for releasing the
parking brake with the engine off shall be provided.
Retrieval points shall conform to ISO 10532:1995+AMD 1:2004+COR 1:2006.
4.3.2.3 Transportation
4.3.2.3.1 General
Stabilizers, outriggers and other moveable devices that may cause a hazard during transportation if moved
out of intended position shall have a means to be locked (e.g. mechanical, hydraulic) in their transport position.
4.3.2.3.2 Tying-down attachment points
Tying-down attachment points according to ISO 15818:2017 shall be provided for the safe transportation of
the machines.
Tying-down attachment points shall be easily identified on the machine, e.g. marked by ISO 6405-1:2017,
symbol 9.50 and described in the o
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