Regulation No. 141-00 Proposal

Name:Regulation No. 141-00 Proposal
Description:Regulation on Tyre Pressure Monitoring Systems (TPMS) - Proposal.
Official Title:Uniform Provisions Concerning the Approval of Vehicles with Regard to their Tyre Pressure Monitoring Systems (TPMS) - Proposal.
Country:ECE - United Nations
Date of Issue:2016-04-07
Amendment Level:Original
Number of Pages:15
Information:Published as Regulation No. 141-00
Vehicle Types:Car, Light Truck
Subject Categories:Drafts and Proposals (Historical)
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Keywords:

vehicle, approval, pressure, tyre, regulation, test, paragraph, system, type, tpms, monitoring, malfunction, minutes, warning, time, position, means, annex, tyres, tell-tale, granted, signal, manufacturer, ignition, tests, production, extension, requirements, number, accordance, maximum, procedure, run, drive, authority, technical, axle, speed, locking, information, contracting, cumulative, parties, agreement, mass, low, inflation, approved, total, service

Text Extract:

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ECE/TRANS/WP.29/2016/63
PROPOSAL FOR A NEW REGULATION ON TYRE PRESSURE
MONITORING SYSTEMS (TPMS)
(ECE 141-00)
ADOPTED AT THE 169 SESSION – JUNE 2016
PROVISIONAL DATE OF ENTRY INTO FORCE: JANUARY 22, 2017

PROPOSAL FOR A NEW REGULATION ON
TYRE PRESSURE MONITORING SYSTEMS
(TPMS)
(ECE 141-00)
1. SCOPE
1. This Regulation applies to the approval of vehicles of Category M up to a maximum mass of
3,500kg and N when equipped with a tyre pressure monitoring system, except for vehicles
fitted with dual wheels on an axle.
2. DEFINITIONS
For the purposes of this Regulation:
2.1. "Approval of a vehicle" means the approval of a vehicle type with regard to its tyre pressure
monitoring system.
2.2. "Vehicle type" means vehicles which do not differ significantly in such essential aspects as:
(a)
(b)
(c)
The manufacturer’s trade name or mark;
Vehicle features which significantly influence the performances of the tyre pressure
monitoring system;
The design of the tyre pressure monitoring system.
2.3. "Wheel" means a complete wheel consisting of a rim and a wheel disc;
2.4. "Tyre" means a pneumatic tyre, being a reinforced flexible envelope that is provided with, or
forms in conjunction with the wheel on which it is mounted, a continuous, essentially toroidal,
closed chamber containing a gas (usually air) or a gas and liquid, that is intended normally to
be used at a pressure greater than atmospheric pressure;
2.5. "Maximum mass" means the maximum value of the vehicle stated by the manufacturer to be
technically permissible (this mass may be higher than the "permissible maximum mass" laid
down by the national administration);
2.6. "Maximum axle load" means the maximum value, as indicated by the manufacturer, of the
total vertical force between the contact surfaces of the tyres or tracks of one axle and the
ground and resulting from the part of the vehicle mass supported by that axle; this load may be
higher than the "authorized axle load" laid down by the national administration. The sum of the
axle loads may be greater than the value corresponding to the total mass of the vehicle;
2.7. "Tyre Pressure Monitoring System (TPMS)" means a system fitted on a vehicle, able to
perform a function to evaluate the inflation pressure of the tyres or the variation of this inflation
pressure over time and to transmit corresponding information to the user while the vehicle is
running;

4.5. If the vehicle conforms to a vehicle type approved, under one or more regulations annexed to
the Agreement, in the country which granted approval under this Regulation, the symbol
prescribed in Paragraph 4.4.1. need not be repeated; in such a case, the regulation and
approval numbers and the additional symbols for all the regulations under which approval has
been granted in the country which granted approval under this Regulation shall be placed in
vertical columns to the right of the symbol prescribed in Paragraph 4.4.1.
4.6. The approval mark shall be clearly legible and be indelible.
4.7. The approval mark shall be placed close to or on the vehicle data plate affixed by the
manufacturer.
4.8. Annex 2 to this Regulation gives examples of approval marks.
5. SPECIFICATIONS AND TESTS
5.1. General
5.1.1. Any vehicle of Categories M up to 3,500kg and N , in both cases with all axles equipped with
single tyres, and fitted with a tyre pressure monitoring system complying with the definition of
Paragraph 2.7. shall meet the performance requirements contained in Paragraphs 5.1.2. to
5.5.5. of this Regulation over a wide range of road and environmental conditions encountered
within the territory of the Contacting Parties.
5.1.2. The effectiveness of the tyre pressure monitoring system fitted on a vehicle shall not be
adversely affected by magnetic or electrical fields. This shall be demonstrated by fulfilling the
technical requirements and respecting the transitional provisions of Regulation No. 10 by
applying:
(a)
(b)
The 03 series of amendments for vehicles without a coupling system for charging the
Rechargeable Electric Energy Storage System (traction batteries);
The 04 series of amendments for vehicles with a coupling system for charging the
Rechargeable Electric Energy Storage System (traction batteries)
5.1.3. The system shall operate from a speed of 40km/h or below, up to the vehicle's maximum
design speed.
5.1.4. The vehicle shall fulfil the tests (puncture, diffusion and malfunction) as specified in Annex 3.
5.2. Tyre Pressure Detection for Incident-Related Pressure Loss.
5.2.1. The TPMS shall illuminate the warning signal described in Paragraph 5.5. within not more than
ten minutes of cumulative driving time after the in service operating pressure in one of the
vehicle's tyres has been reduced by 20% or it is at a minimum pressure of 150kPa, whatever is
higher.
5.3. Detection for a tyre pressure level significantly below the recommended pressure for optimum
performance including fuel consumption and safety.
5.3.1. The TPMS shall illuminate the warning signal described in Paragraph 5.5. within not more than
sixty minutes of cumulative driving time after the in-service operating pressure in any of the
vehicle's tyres, up to a total of four tyres, has been reduced by twenty per cent or it is at a
minimum pressure of 150kPa, whatever is higher.

7. MODIFICATIONS AND EXTENSION OF APPROVAL OF THE VEHICLE TYPE
7.1. Every modification of the vehicle type as defined in Paragraph 2.2. of this Regulation shall be
notified to the Type Approval Authority which approved the vehicle type. The Type Approval
Authority may then either:
7.1.1. Consider that the modifications made do not have an adverse effect on the conditions of the
granting of the approval and grant an extension of approval;
7.1.2. Consider that the modifications made affect the conditions of the granting of the approval and
require further tests or additional checks before granting an extension of approval.
7.2. Confirmation or refusal of approval, specifying the alterations, shall be communicated by the
procedure specified in Paragraph 4.3. above to the Contracting Parties to the Agreement
applying this Regulation.
7.3. The Type Approval Authority shall inform the other Contracting Parties of the extension by
means of the communication form which appears in Annex 1 to this Regulation. It shall assign
a serial number to each extension, to be known as the extension number.
8. CONFORMITY OF PRODUCTION
8.1. The conformity of production procedures shall comply with those set out in Appendix 2 of the
Agreement (E/ECE/324–E/ECE/TRANS/505/Rev.2), with the following requirements:
8.2. The Type Approval Authority which has granted type approval, may at any time verify the
conformity of production in each production facility. The normal frequency of these verifications
shall be at least once per year.
9. PENALTIES FOR NON-CONFORMITY OF PRODUCTION
9.1. The approval granted in respect of a vehicle type pursuant to this Regulation may be withdrawn
if the requirements laid down in Paragraph 8 are not complied with.
9.2. If a Contracting Party to the Agreement, which applies this Regulation, withdraws an approval it
has previously granted, it shall forthwith so notify the other Contracting Parties applying this
Regulation, by means of a copy of the approval form bearing at the end, in large letters, the
signed and dated annotation "APPROVAL WITHDRAWN".
10. PRODUCTION DEFINITIVELY DISCONTINUED
If the holder of the approval completely ceases to manufacture a type of vehicle approved in
accordance with this Regulation, he shall so inform the authority which granted the approval.
Upon receiving the relevant communication that authority shall inform thereof the other
Contracting Parties to the Agreement applying this Regulation by means of a copy of the
approval form bearing at the end, in large letters, the signed and dated annotation
"PRODUCTION DISCONTINUED".

ANNEX 1
COMMUNICATION
(maximum format: A4 (210 × 297mm))
Issued by:
Name of administration
.....................................
.....................................
.....................................
Concerning:
Approval granted
Approval extended
Approval refused
Approval withdrawn
Production definitively discontinued
of a vehicle type with regard to its tyre pressure monitoring system pursuant to Regulation No. XXX.
Approval No.: .......................................................... Extension No.: ....................................................
1. Trade name or mark of the vehicle: ................................................................................................
2 Vehicle type (if applicable, variants that are included): ...................................................................
3. Manufacturer's name and address: ................................................................................................
4. If applicable, name and address of the manufacturer's representative: .........................................
5. Vehicle submitted for approval on: .................................................................................................
6. Technical Service responsible for conducting approval tests: .......................................................
7. Date of test report: .........................................................................................................................
8. Number of test report: .....................................................................................................................

ANNEX 2
ARRANGEMENTS OF APPROVAL MARKS
(See Paragraph 4.4. of this Regulation)
a = 8mm min.
The above approval mark affixed to a vehicle shows that the vehicle type concerned has, with regard to
the equipment of a tyre pressure monitoring system, been approved in the Netherlands (E 4), pursuant to
Regulation No. [XXX] under approval number 002439. The approval number indicates that the approval
was granted in accordance with the requirements of Regulation No. [XXX] in its original form.

1.4.4. Stationary Location.
When the vehicle is parked, the vehicle's tyres shall be shaded from direct sun. The location
shall be shielded from any wind that may affect the results.
1.4.5. Brake Pedal Application.
1.4.6. Tyres.
Driving time shall not accumulate during service brake application while the vehicle is moving.
The vehicle shall be tested with the tyres installed on the vehicle according to the vehicle
manufacturer's recommendation. However, the spare tyre may be utilised for testing TPMS
malfunction.
1.5. Accuracy of Pressure Measurement Equipment.
Pressure measurement equipment to be used for the tests contained in this annex shall be
accurate to at least +/-3kPa.
2. TEST PROCEDURE
The test shall be performed at a test speed within the range in accordance with
Paragraph 1.4.2. to this annex, at least once for the test case according to Paragraph 2.6.1. to
this Annex ("puncture test"), and at least once for each test case according to Paragraph 2.6.2.
to this annex ("diffusion test").
2.1. Before inflating the vehicle's tyres, leave the vehicle stationary outside at ambient temperature
with the engine off shaded from direct sunlight and not exposed to wind or other heating or
chilling influences for at least one hour. Inflate the vehicle's tyres to the vehicle manufacturer's
recommended cold inflation pressure (P ), in accordance with the vehicle manufacturer's
recommendation for the speed and load conditions, and tyre positions. All pressure
measurements shall be carried out using the same test equipment.
2.2. With the vehicle stationary and the ignition locking system in the "Lock" or "Off" position,
activate the ignition locking system to the "On" or "Run" position. The tyre pressure monitoring
system shall perform a check of lamp function for the low tyre pressure tell-tale as specified in
Paragraph 5.5.2. of this Regulation. This last requirement does not apply to tell-tales shown in
a common space.
2.3. If applicable, set or reset the tyre pressure monitoring system in accordance with the vehicle
manufacturer's recommendations.
2.4. Learning Phase.
2.4.1. Drive the vehicle for a minimum of twenty minutes within the speed range in Paragraph 1.4.2.
to this Annex, and with an average speed of 80km/h (±10km/h). It is allowed to be outside the
speed range for a maximum cumulative time of two minutes during the learning phase.
2.4.2. At the discretion of the Technical Service, where the driving test is undertaken on a track
(circle/oval) with only turns in a single direction, then the driving test in Paragraph 2.4.1. above
should be equally split (±2min) in both directions.

2.9. Repetition of the Deflation Phase.
The test may be repeated, at the same or different loads, using the relevant test procedures in
Paragraphs 2.1. to 2.8. above, with the relevant tyre(s) on the vehicle under-inflated, in
accordance with the provisions of Paragraph 5.2. or 5.3. to this Regulation, whichever is
relevant.
3. TPMS MALFUNCTION DETECTION
3.1. Simulate a TPMS malfunction, for example, by disconnecting the power source to any TPMS
component, disconnecting any electrical connection between TPMS components, or installing a
tyre or wheel on the vehicle that is incompatible with the TPMS. When simulating a TPMS
malfunction, the electrical connections for the tell-tale lamps shall not be disconnected.
3.2. Drive the vehicle for up to ten minutes of cumulative time (not necessarily continuously) along
any portion of the test course.
3.3. The sum of the total cumulative drive time under Paragraph 3.2. shall be the lesser of ten
minutes or the time at which the TPMS malfunction tell-tale illuminates.
3.4. If the TPMS malfunction indicator did not illuminate in accordance with Paragraph 5.4. to this
Regulation, as required, discontinue the test.
3.5. If the TPMS malfunction indicator is illuminated or illuminates during the procedure in
Paragraphs 3.1 to 3.3 above, deactivate the ignition locking system to the ''Off'' or ''Lock''
position. After five minutes, reactivate the vehicle's ignition locking system to the ''On'' (''Run'')
position. The TPMS malfunction indicator shall again signal a malfunction and remain
illuminated as long as the ignition locking system is in the ''On'' (''Run'') position.
3.6. Restore the TPMS to normal operation. If necessary, drive the vehicle until the warning signal
has extinguished. If the warning lamp has not extinguished, discontinue the test.
3.7. The test may be repeated using the test procedures in Paragraphs 3.1. to 3.6. above, with each
such test limited to simulation of a single malfunction.
Regulation on Tyre Pressure Monitoring Systems (TPMS) - Proposal.