ISO 25333

ISO/FDIS 25333
ISO/TC 195/SC 2
Secretariat: DIN
Road sweepers — Environmental efficiency — Requirements on the
test procedure for energy consumption
Balayeuses — Efficacité environnementale — Exigences relatives à la méthode d’essai pour la mesure de la
consommation d’énergie
FDIS stage
ISO/DISFDIS 25333:2025-062026(en)
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Published in Switzerland
ii
ISO/FDIS 25333:2026(en)
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 3
4.1 Sweeper (test unit) . 3
4.2 Environmental conditions . 3
4.3 Test circuit . 3
4.4 Test bench . 4
5 Implementation . 4
5.1 Measurements on the test track . 4
5.2 On the test bench . 7
Annex A (informative) Sample data collection sheet for measuring energy consumption of truck
mounted sweeper, self-propelled or towed sweeper . 9
Bibliography . 11

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ISO/DISFDIS 25333:2025-062026(en)
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
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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
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This document was prepared by Technical Committee ISO/TC 195, Building construction machinery and
equipment, Subcommittee SC 2, Road operation machinery and associated equipment.
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ISO/FDIS 25333:2026(en)
Introduction
As a result of the development of new drive unit concepts for sweepers, as well as the provisions from
procurement guidelines from different regions, there is a demand for universal processes and provisions for
determining the environmental effects of sweepers, with the objective of achieving a uniform evaluation of
the environmental efficiency.
The environmental effects in the utilisationutilization phase for sweepers are essentially determined by their
energy consumption from which the relevant CO emissions result.
In order to define appropriate characteristic numbers for the environmental effect of sweepers, it is necessary
to differentiate between sweeping mode and general trips, for instance, to and from the work site.
The objective is to be able to issue an environmental efficiency ID for various vehicle models.
In the future, manufacturers and users should be able to decide whether the consumption measurement is
carried out as a simulation or within the scope of measurement runs.
EXAMPLE : In Europe, the Vehicle Energy Consumption calculation tool (VECTO) is used.
NOTE Table 1 contains, in addition to the statutory units, the unit Nm (normal cubic metres). This unit is only
mentioned as an aid in official and commercial transactions (e.g.,. import/export) with nations that use this unit. 1 Nm
3 3 3 3
of gas is the amount of a gas in a volume of 1 m at 1,013 25 bar and 0 °C. The conversion rate with m is 1 Nm = 1 m .
v
Road sweepers — Environmental efficiency — Requirements on the
test procedure for energy consumption
1 Scope
This document specifies a uniform, reproducible testing process for various drive units, chassis, constructions
and attached parts as well as sweeping systems of the sweepers described in ISO 24147, with which a
comparison of the energy consumption levels can be performed.
This document defines either a representative test circuit or a test bench cycle with which the energy
consumption levels of the sweepers can be evaluated and compared within the scope of reproducible
measurement runs or test bench runs, or all of these.
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.
ISO 24147:2023, Road operation machinery and associated equipment — Sweepers — Commercial
specifications
3 Terms and definitions
For the purposes of this document, the following terms and definitions are listed in this documentapply.
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
measuring turbine
measuring device to record fuel consumption using differential measurement in the fuel system
3.2
measurement run
test trip
sweeper (3.8) run in the sweeping mode and transporting mode (3.7) on the test circuit
3.3
test bench run
simulation of a measurement run (3.2) on the test bench
3.4
operating mass
OM
mass of the sweeper (3.8) ready to drive and ready for the operating and sweeping mode with equipment (and
attachment) and empty hopper (3.9) and debris water storage in the most usual configuration as specified by
the manufacturer, and with the operator mass
[SOURCE: ISO 24147:2024, 3.24, modified]

ISO/FDIS 25333:2026(en)
[SOURCE: ISO 24147:2023, 3.24, modified — "ready to drive and ready for the operating and sweeping mode"
has been added to the definition. The following has been removed from the definition "full fuel tank(s) 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 full water tank(s)", and Notes to entry 3 to 6 have been added.]
Note 1 to entry: The mass of the operator can differ depending on the respective region.
Note 2 to entry: The mass of the operator is not included for pedestrian-controlled-sweepers.
Note 3 to entry: The operating mass of a combustion driven vehicle is the operating mass (3.4) and full fuel tank(s) and
all fluid systems (i.e. hydraulic oil, transmission oil, engine oil, coolant, urea) at the levels specified by the manufacturer
and, when applicable, with full water tank(s).
Note 4 to entry: The operating mass of a battery electric vehicle is the operating mass (3.4) and a fully loadenloaded
battery and all fluid systems (i.e. hydraulic oil, transmission oil, coolant) at the levels specified by the manufacturer and,
when applicable, with full water tank(s).
Note 5 to entry: The operating mass of a plug-in hybrid electric vehicle is the operating mass (3.4) and full fuel tank(s)
and fully loadenloaded battery and all fluid systems (i.e. hydraulic oil, transmission oil, engine oil, coolant, urea) at the
levels specified by the manufacturer and, when applicable, with full water tank(s).
Note 6 to entry: The operating mass of a fuel-cell electicalelectrical vehicle is the operating mass (3.4) and full hydrogen
tank(s) and all fluid systems (i.e. hydraulic oil, transmission oil, coolant) at the levels specified by the manufacturer and,
when applicable, with full water tank(s).
3.5
steady state
Statestate in which all operating fluids are at a temperature level that does not vary either during the test
bench run (3.3) or measurement run (3.2) or both.
3.6
sweeping mode
operating mode
state in which the sweeper (3.8) executes cleaning or sweeping activities, if used properly and under the
conditions specified by the manufacturer
3.7
transporting mode
drive mode
state in which the sweeper (3.8) is moved between work sites
3.8
sweeper
road surface cleaning machine
machine designed for cleaning debris from improved surfaces
Note 1 to entry: Sweepers can move debris to a hopper (3.9(3.9)) or other type of disposal container which is attached to
the machine by either mechanical or pneumatic means, or a combination of both.
Note 2 to entry: Combinations of these
...