Accueil | Table des matières | Remonter
Projet de norme pour les limiteurs de vitesse pour la session du 26/29 juin 2001
Source : site des Nations Unies Genève
http://www.unece.org/trans/main/welcwp29.htm (cette page n'est plus accessible sur le site des Nations Unies)
INLAND TRANSPORT COMMITTEE
(One-hundred-and-twenty-fourth session,
26-29 June 2001, agenda item 4.2.14.)
PROPOSAL FOR DRAFT SUPPLEMENT 1 TO REGULATION No. 89
(Speed limitation devices)
Transmitted by the Working Party on Brakes and Running Gear (GRRF)
: The text reproduced below was adopted by GRRF at its forty-ninth session, and is transmitted for consideration to WP.29 and to AC.1. It is based on document TRANS/WP.29/GRRF/2000/26/Rev.1, as amended (TRANS/WP.29/GRRF/49, para. 57 and annex 4).
This document is a working document circulated for discussion and comments. The use of this document for other purposes is the entire responsibility of the user.+ Documents are also available via the INTERNET: http://www.unece.org/trans/main/welcwp29.htm |
, amend to read:
UNIFORM PRESCRIPTIONS FOR APPROVAL OF:
I.
... maximum speed or their adjustable speed limitation function.
II. ... speed
limiting device (SLD) or adjustable speed limitation device (ASLD) of an
approved type.
III. ... (SLD) and adjustable speed
limitation device (ASLD)."
The table of contents, insert a new annex 6, to read:
"Annex 6: Tests and performance requirements for adjustable speed limitation
devices (ASLD)"
Text of the Regulation,
Paragraph 1.1.1. and its footnote2/,amend to read:
"1.1.1.Part I:... SLD and to vehicles of categories M and N equipped with an
adjustable speed limitation device ASLD which have not been separately approved
... fulfilling the function of an SLD or ASLD, as appropriate.
2/It is recommended to apply this Regulation with respect to SLDs to vehicles
over10 tonnes for which the limitation speed is less than the general speed
limitation."
Paragraphs1.1.2. and 1.1.3, amend to read:
"1.1.2.Part II:...N2and N3of SLDs and installation on vehicles of categories M
and N of ASLD which have been type approved to Part III of this Regulation."
1.1.3.Part III:.. . and ASLD which are intended to be fitted to vehicles of
categories M and N."
Paragraph1.2.,amend to read.
"1.2.Purpose
The purpose of this Regulation is to limit the road speed of vehicles by means
of a vehicle system which has the primary function of controlling the fuel feed
to the engine or via the engine management."
Insert new paragraphs 1.2.1. to 1.2.3., to read:
1.2.1.Vehicles of categories M3, N2and N3shall be limited to a maximum speed
achieved by a speed limitation device (SLD)or function (SLF).
1.2.2.Vehicles of categories M1, N1andM2shall be limited to a speed voluntarily
set by the driver by means of an adjustable speed limitation device (ASLD) or
function (ASLF), when it is activated.
1.2.3.Vehicles of categories M3, N2andN3may in addition be equipped with a ASLD
or a ASLF.
Insert new paragraphs 2.1.5. to 2.1.7., to read:
2.1.5.Adjustable limit speed Vadj means the speed voluntarily set by the driver.
2.1.6.Adjustable speed limitation function ASLF, means a function which allows
the driver to set a vehicle speed Vadj, and when activated limits the vehicle
automatically to that speed.
2.1.7.Speed limitation function, means a function to control the fuel feed of
the vehicle or engine management in order to limit the vehicle speed to a fixed
maximum value.
PART I,
Paragraph5.1.,amend to read:
"5.1. Requirements for vehicles of categories M3, N2and N3equipped with SLF."
Insert new paragraphs 5.2. to 5.2.7.3., to read:
"5.2.Requirements for vehicles equipped with ASLF
5.2.1.TheASLF must be such that the vehicle in normal use, despite the
vibrations towhich it may be subjected, complies with the provisions of Part I
of this Regulation.
5.2.1.1.In particular, the device and all components supporting the ASLF must be
so designed, constructed and assembled as to resist corrosion and ageing
phenomena to which it may be exposed.
5.2.2.The ASLF shall operate satisfactorily in its electromagnetic environment
and conform to the technical prescriptions of Regulation No. 10 to the latest
level of amendments in force at the time of type approval.
5.2.3.No malfunction or unauthorized interference with the system shall result
in an increase in engine power above that demanded by the position of the
driver's accelerator.
5.2.4.The Vadj value shall be permanently indicated to the driver and visible
from the driver seat. This does not preclude temporary interruption of the
indication for safety reasons or drivers demand.
5.2.5.The ASLF must satisfy the following requirements:
5.2.5.1.The ASLF shall not actuate the vehicle's service braking system except
for vehicles of categories M1and N1, where the vehicle's service braking system
may be actuated.
5.2.5.2.The ASLF must be effective whichever the engine type or transmission is
used.
5.2.5.3.The vehicle speed shall be limited to Vadj.
5.2.5.4.It shall still be possible to exceed Vadj when tested in accordance with
paragraph 5.3.
5.2.5.4.1.To exceed Vadj a positive action will be required.*/
5.2.5.4.2.Whenever the vehicle speed is exceeding Vadj the driver must be
informed by means of a suitable or warning signal other than the speedometer.
5.2.5.4.3.Compliance with paragraph 5.2.5.4.2. shall be demonstrated by
conducting the tests according to paragraph 5.3.
5.2.6.Setting of Vadj:
5.2.6.1.It shall be possible to set Vadj value bysteps not greater than
10km/hbetween30 km/h and the maximum design speed of the vehicle.
5.2.6.2.In the case of vehicles manufactured for sale in any country where
imperial units are used, it shall be possible to set Vadj value by steps not
greater than 5 mph between 20 mph and the maximum design speed of the vehicle.
5.2.6.3.This shall be achieved by a control device operated directly by the
driver.
5.2.7.Activation / de-activation:
5.2.7.1.The ASLF must be capable of being activated/de-activated at any time.
5.2.7.2.The ASLF must be de-activated each time the engine is stopped by a
deliberate action of the driver.
5.2.7.3.When the ASLF is activated the initial setting of Vadj shall not be less
than the current vehicle speed
*/e.g. kick down
Paragraph5.2. (former), renumber as paragraph 5.3., and amend to read:
"5.3.Tests
5.3.1.The speed limitation tests (retain former paragraph of the current
regulation for SLD)
5.3.2.The adjustable speed limitation tests to which the vehicle presented for
approval are submitted are described in annex 6 of this Regulation.
5.3.2.1.Three different speeds will be chosen for the tests at the discretion of
the technical service.
PART II,
Paragraphs13. and 13.1., amend to read:
"13.REQUIREMENTS"
13.1.Requirements concerning the installation of an approved SLD."
Insertnew paragraphs 13.2. and 13.2.1.. to read:
"13.2.Requirements concerning the installation of an approved ASLD.
13.2.1.The vehicle on which the approved ASLD has been installed shall meet all
requirements of paragraphs 5.2.2., 5.2.4., 5.2.5.4.,5.2.6. and 5.2.7.
PART III,
Paragraphs21.2. and 21.2.1., amend to read:
"21.2.Requirements for ASLDs
21.2.1.The adjustable speed limitation device ASLD must be such that the vehicle
in normal use, despite the vibrations to which it may be subjected, complies
with the provisions of Part III of this Regulation."
Insertnew paragraphs 21.2.1.1. to 21.3.2.1., to read:
"21.2.1.1.In particular, the ASLF must be so designed, constructed and assembled
as to resist corrosion and ageing phenomena to which it may be exposed.
21.2.2.The speed limitation function shall operate satisfactorily in its
electromagnetic environment, in accordance with prescriptions of Regulation No.
10 to the latest level of amendments in force at the time of type approval.
21.2.3.No malfunction or unauthorized interference shall result in an increase
in engine power above that demanded by the position of the driver's accelerator.
21.2.4.The Vadjvalue shall be permanently indicated to the driver by a visual
display. This does not preclude temporary interruption of the display for safety
reasons.
21.2.5.The ASLD must respect the following requirements:
21.2.5.1.The adjustable speed limitation device shall not actuate the vehicle's
braking system except for vehicles of categories M1and N1,where the vehicle's
service braking system may be actuated.
21.2.5.2.The method used to limit speed when reaching Vadj must be possible
whichever transmission type (automatic or manual) of the vehicle.
21.2.5.3.The vehicle speed shall be limited to Vadj.
21.2.5.4.It shall still be possible to exceed speed Vadj.
21.2.5.4.1.To exceed Vadj a positive action will be required.*/
21.2.5.4.2.Whenever the vehicle speed exceeds Vadj the driver must be informed
by means of a suitable or warning signal other thanthe speedometer.
21.2.5.4.3.Compliance with paragraph 21.2.5.4.2. shall be demonstrated with
paragraph 21.3.
21.2.5.5.The speed limitation function shall permit a normal use of the
accelerator control for gear selection.
21.2.6.Setting of Vadj:
21.2.6.1.It shall be possible to set Vadj value by steps no greater than10km/h
(5 mph) between 30 km/h (20 mph) and the maximum design max speed of the vehicle.
21.2.6.2.In the case of vehicles manufactured for sale in any country where
imperial units are used, it shall be possible to set Vadj value by steps not
greater than 5 mph between 20 mph and the maximum design speed of the vehicle.
21.2.6.3.This shall be achieved by a control device operated bythe driver.
21.2.7.Activation / de-activation
21.2.7.1.When Vadjis set by the driver it shall not capable of being modified by
any means other than the designated control device.
21.2.7.2.The ASLD must be capable to be activated / de-activated at any time.
21.2.7.3.The ASLD must be de-activated at each engine stop and the key removed.
21.3.Tests
21.3.1.The speed limitation tests to which the SLD presented for approval is
submitted as well as the performances required are described in annex 5 to this
Regulation.
*/e.g. kick down
End note3/, pertinent to paragraphs 4.4.1., 12.4.1. and 20.4.1., amend to read:
"3/1for Germany, ... 8 for the Czech Republic, .... 23 for Greece, 24 for
Ireland,25 for Croatia, 26 for Slovenia, 27 for Slovakia, 28 for Belarus,
29forEstonia, 30 (vacant), 31 for Bosnia and Herzegovina, 32 for Latvia,33(vacant),
34 for Bulgaria, 35-36 (vacant), 37 for Turkey, 38-39(vacant), 40 for The former
Yugoslav Republic of Macedonia, 41 (vacant), 42for the European Community (Approvals
are granted by its Member States using their respective ECE symbol), 43 for
Japan, 44 (vacant), 45 for Australia and46 for Ukraine. Subsequent numbers
....."
21.3.2.The adjustable speed limitation tests to which the ASLD presented for
approval are submitted are described in annex 6 of this Regulation.
21.3.2.1.Three different speeds will be chosen for the tests at the discretion
of the technical service.
Annex 1, annex 2 and annex 3,replace in all cases the following terms:
"speed limiting function " by " speed limiting function / adjustable speed
limitation function",
"speed limitation device " by " speed limitation device / adjustable speed
limitation device", and
"SLD" by "SLD/ASLD".
Insert a new annex 6, to read:
"Annex6
TESTSAND PERFORMANCE REQUIREMENTS FOR ASLD
1.TESTSOF ADJUSTABLE SPEED LIMITATION SYSTEM
1.1.Preparation of the vehicle
1.1.1.A vehicle representative of the vehicle type to be approved or an ASLD
representative of the type of ASLD, as appropriate, shall be submitted to the
technical service.
1.1.1.1.Where an ASLD is to be approved it shall be fitted by the manufacturer
to a vehicle which is representative of the type for which the device is
intended.
1.1.2.The settings of the engine of the test vehicle, particularly the fuel feed
(carburettor or injection system), shall conform to the specifications of the
vehicle manufacturer.
1.1.3.The tyres shall be bedded and the pressure shall be as specified by the
manufacturer for the vehicle.
1.1.4.The vehicle mass shall be the minimum kerb weight declared by the
manufacturer.
1.2.Characteristics of the test track
1.2.1.The test surface shall be suitable for enabling stabilised speed to be
maintained and shall be free from uneven patches. Gradients shall not exceed 2
per cent.
1.2.2.The test surface shall be free from standing water, snow or ice.
1.3.Ambient weather conditions
1.3.1.The mean wind speed measured at a height of at least 1m above the ground
shall be less than 6 m/s with gusts not exceeding10m/s.
1.4.Test for the driver being informed that Vadj is being exceeded
1.4.1.The positive action (as referred to in paragraphs5.2.5.4.1. and21.2.5.4.1)
required to enable Vadj to be exceeded shall be applied when the vehicle is
running at a speed 10 km/h below Vadj.
1.4.2.The vehicle shall be accelerated up to a speed at least10 km/h greater
than Vadj.
1.4.3.This speed shall be maintained for at least 30 seconds.
1.4.4.Instantaneous vehicle speed shall be recorded during the test and measured
with an accuracy of1 percent.
1.4.5.The test shall be considered satisfactory if the following conditions are
met:
1.4.5.1.The driver is informed by a warning signal when the actual speed of the
vehicle is exceeding Vadj by more than 3 km/h.
1.4.5.2.The driver continues to be informed for the duration of the time that
Vadj is exceeded by more than 3 km/h.
1.5.Test of the adjustable speed limitation function/device.
1.5.1.With the ASLF/D deactivated, for each gear ratio selected for the chosen
test speed Vadj, the technical service shall measure the forces required on the
accelerator control to maintain Vadj and a speed (Vadj*), which is 20 per cent
or 20 km/h (whichever is the greater) faster than Vadj.
1.5.2.With the ASLF/D activated and set at Vadj, the vehicle shall be run at a
speed of 10 km/h below Vadj. The vehicle shall then be accelerated by increasing
the force on the accelerator control over a period of 1 s 0.2 s to that required
to attain Vadj*.This force shall then be maintained for a period of at least 30
seconds, after the vehicle speed has stabilised.
1.5.3.The instantaneous vehicle speed shall be recorded during the test in order
to establish the curve of the speed versus the time and during the operation of
the ASLF/D as appropriate. The accuracy of the speed measurement shall be1 per
cent. The accuracy of the time measurement shall be less than 0.1 s.
1.5.4.The test shall be considered satisfactory if the following conditions are
met:
1.5.4.1.The stabilized speed (Vstab) reached by the vehicle shall not exceed
Vadj by more than 3 km/h
1.5.4.1.1.After Vstab is reached for the first time:
1.5.4.1.1.1.Vmaxshall not exceed Vstab by more than 5 per cent;
1.5.4.1.1.2.the rate of change of speed shall not exceed 0.5 m/s2when measured
over a period greater than 0.1 s;
1.5.4.1.1.3.the stabilized speed conditions specified in 1.5.4.1.1.shall be
attained within 10 s of first reaching Vstab;
1.5.4.1.2.When stable speed control has been achieved:
1.5.4.1.2.1.speed shall not vary by more than 3 km/h of Vadj;
1.5.4.1.2.2.the rate of change of speed shall not exceed 0.2 m/s2when measured
over a period greater than 0.1 s;
1.5.4.1.2.3.Vstabis the average speed calculated for a minimum time interval of
20 seconds beginning 10 seconds after first reaching Vstab;
1.5.4.1.3.Tests in acceleration shall be carried out and the acceptance criteria
verified for each gear ratio allowing in theory Vadj* to be achieved.