projet290100
Texte révisé proposé par le représentant de la France pour la réunion du 29 janvier/3 février 2001
Source : site internet des Nations Unies de Genève
ECONOMIC
COMMISSION FOR EUROPE
INLAND
TRANSPORT COMMITTEE
Working
Party on Brakes and Running Gear (GRRF)
(Forty-ninth
session, 29 January-2 February 2001,
agenda
item 5.)
(Speed
limitation devices)
Revision 1
Note: The text reproduced below was prepared by the expert from France on behalf of the drafting group in charge of updating Regulation No. 89 (TRANS/WP.29/GRRF/48, para.
Note:
This document is distributed to the Experts on Brakes and Running Gear only.
Amend
the title, to
read:
"UNIFORM
PRESCRIPTIONS FOR APPROVAL OF:
I.
... maximum speed or their
speed self-control function.
II.
... speed limiting device (SLD)
or speed self-control device (SSCD) of an approved type.
III.
... (SLD) and speed
self-control device (SSCD)."
The table of contents, insert
a new annex 6, to read:
"Annex 6
Tests and performance requirements for speed self-control devices (SSCD)"
Paragraphs
1.1.1 to 1.1.3.,
amend to read:
"1.1.1.
Part I: ... SLD and
to vehicles of categories M and N equipped with a speed self-control device
SSCD which have not been separately approved ... fulfilling the function of an
SLD or SSCD, as appropriate.
1.1.2.
Part II: .............. N2
and N3 of SLDs and installation on vehicles of categories M and N of SSCD
which have been type approved to Part III of this Regulation."
1.1.3.
Part III: ............ .
and SSCD which are intended to be fitted to vehicles of categories M and
N."
Paragraph
1.2., 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, N2 and N3 shall be limited to a maximum
speed achieved by a speed limitation device (SLD) or function (SLF).
1.2.2.
Vehicles of categories M1,
N1 and M2 shall be limited to a speed voluntarily set by the driver by means
of a speed self-control device (SSCD) or function (SSCF).
1.2.3.
Vehicles of categories M3,
N2 and M3 may in addition be equipped with a SSCD or a SSCF.”
Insert
new paragraphs 2.1.5. to 2.1.7.,
to read:
“2.1.5.
“Adjustable speed Vadj” means the speed voluntarily set by
the driver.
2.1.6.
“Speed self-control
function SSCF”, means a variable speed limitation function which allows
the driver to set a vehicle speed Vadj and when activated for the vehicle to
be automatically limited 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.”
Paragraph
5.1., amend to
read:
"5.1.
Requirements for vehicles of categories M3, N2 and N3 equipped with SLF."
Insert
new paragraphs 5.2. to 5.2.7.3.,
to read:
"5.2.
Requirements for vehicles equipped with SSCF.
5.2.1.
................. The SSCF must be such that the vehicle in
normal use, despite the vibrations to which 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 SSCF must be so
designed, constructed and assembled as to resist corrosion and ageing
phenomena to which it may be exposed.
5.2.2................... The SSCF shall operate satisfactorily in its
electromagnetic environment and
conform to the technical prescriptions of regulation 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 driver’s demand.
5.2.5.
The SSCF must satisfy the following requirements:
5.2.5.1................ The SSCF shall not actuate the vehicle's
service braking systems except for vehicles of categories M1 and N1.
5.2.5.2................ The SSCF 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 by steps not greater than 10 km/h
(5 mph) between 30 km/h (20 mph) and the maximum design speed of the
vehicle.
5.2.6.2.
This shall be achieved by a
control device operated directly by the driver.
5.2.7................... Activation / de-activation:
5.2.7.1.
The SSCF must be capable of
being activated/de-activated at any time.
5.2.7.2.
The SSCF must be
de-activated each time the engine is stopped by a deliberate action of the
driver.
5.2.7.3.
When the SSCF is activated
the initial setting of Vadj shall not be less than the current vehicle speed.”
Paragraph
5.2. (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 speed self-control
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,
Paragraphs
13. and 13.1.,
amend to read:
"13.
REQUIREMENT"
13.1.
Requirements concerning the installation of an approved SLD."
Insert
new paragraphs 13.2. and 13.2.1..
to read:
"13.2.
Requirements concerning the installation of an approved SSCD.
13.2.1.
The vehicle on which the
approved SSCD has been installed shall meet all requirements of paragraphs
5.2.2., 5.2.4., 5.2.5.4., 5.2.6., 5.2.7.”
PART
III,
Paragraphs
21.2. and 21.2.1.,
amend to read:
"21.2.
Miscellaneous for SSCDs
21.2.1.
The speed self-control
device SSCD 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."
Insert
new paragraphs 21.2.1.1. to 21.3.2.1.,
to read:
"21.2.1.1.
In particular, the SSCF 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 ECE regulation 10.02.
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 Vadj value 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 SSCD must respect the
following requirements:
21.2.5.1.
The self speed limitation
device shall not actuate the vehicle's braking systems except for vehicles of
categories M1 and N1.
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 than the 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 than 10 km/h (5 mph) between 30 km/h (20
mph) and the maximum design max speed of the vehicle.
21.2.6.2.
This shall be achieved by a
control device operated by the driver.
21.2.7.
Activation / de-activation
21.2.7.1.
When Vadj is 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 SSCD must be capable to
be activated/de-activated at any time.
21.2.7.3.
The SSCD 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.
21.3.2.
The speed self-control
tests to which the SSCD 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.”
Insert
a new annex 6,
to read:
"Annex
6
TESTS
AND PERFORMANCE REQUIREMENTS FOR SSCD
1. TESTS OF SPEED SELF-CONTROL SYSTEM
1.1.
Preparation of the vehicle
1.1.1.
A vehicle representative of
the vehicle type to be approved or an SSCD representative of the type of SSCD,
as appropriate, shall be submitted to the technical service.
1.1.1.1.
Where an SSCD 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 1 m above the ground shall be less than 6 m/s
with gusts not exceeding 10 m/s.
1.4.
Test for the driver
being informed that Vadj is being exceeded
1.4.1.
The positive action (as
referred to in paragraphs 5.2.5.4.1. and 21.2.5.4.1) 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 least 10 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 of ±
1 per cent.
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 speed
self-control function/device.
1.5.1.
With the SSCF/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 SSCF/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 SSCF/D as appropriate.
The accuracy of the speed measurement shall be ±
1 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.
Vmax shall 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/s2 when 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/s2 when measured over a period greater than
0.1 s;
1.5.4.1.2.3.
Vstab is 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.”