Regulation No. 55-01 Proposed Supplement 5

Name:Regulation No. 55-01 Proposed Supplement 5
Description:Towing Couplings, Forks, Eyes, Fifth Wheels etc. Proposed Supplement 5 to the 01 Series.
Official Title:Proposal for Supplement 5 to the 01 Series of Amendments to Regulation No.55 (Mechanical Couplings).
Country:ECE - United Nations
Date of Issue:2015-12-23
Amendment Level:Original
Number of Pages:12
Vehicle Types:Bus, Car, Component, Heavy Truck, Light Truck, Trailer
Subject Categories:Drafts and Proposals (Historical)
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Keywords:

coupling, vehicle, paragraph, annex, read, device, type, amend, devices, class, component, towing, manufacturer, hook, mechanical, couplings, appendix, drawbar, regulation, components, approval, vehicles, ball, mounting, attachment, maximum, remote, authority, test, trailers, height, brackets, indication, points, horizontal, service, toroidal, eyes, technical, permissible, series, point, trailer, amendments, case, installation, position, supplement, fixing, intended

Text Extract:

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ECE/TRANS/WP.29/2016/5
PROPOSAL FOR SUPPLEMENT 5 TO THE 01 SERIES OF
AMENDMENTS TO
REGULATION NO. 55
(MECHANICAL COUPLINGS)
ADOPTED AT THE 168 SESSION – MARCH 2016
PROVISIONAL DATE OF ENTRY INTO FORCE: OCTOBER 8, 2016

Paragraph 5.1., amend to read:
"5.1. Where a vehicle manufacturer applies for approval of a vehicle fitted with a mechanical
coupling device or component or authorizes the use of a vehicle for towing any form of
trailer, then, at the request of a bona fide applicant for possible type approval for a
mechanical coupling device or component, or of the type approval authority or technical
service of a Contracting Party, the vehicle manufacturer shall readily make available to that
inquirer or authority or technical service, such information as required in Annex 2,
Appendix 1, to enable a manufacturer of a coupling device or component to properly design
and manufacture a mechanical coupling device or component for that vehicle. At the request
of a bona fide applicant for possible type approval for a mechanical coupling device or
component, any information given in Annex 2, Appendix 1 which is held by the type
approval authority shall be released to that applicant."
Paragraph 5.3., amend to read:
"5.3. It shall be accompanied by the following information to enable the type approval authority to
complete the communication form given in Annex 2.
5.3.1. A detailed description of the vehicle type according to Annex 2, Appendix 1 and of the
mechanical coupling device or component and, at the request of the type approval authority
or technical service, a copy of the approval form for the device or component;"
Paragraphs 5.3.2. and 5.3.2.1. shall be deleted and replaced by the following:
"5.3.2. Deleted
5.3.2.1. Deleted"
Paragraph 13., amend to read:
"13.1. Until the United Nations Secretary-General is notified otherwise, Contracting Parties
applying this Regulation that are Member States of the European Union declare that, in
relation to mechanical coupling devices and components, they will only be bound by the
obligations of the Agreement to which this Regulation is annexed with respect to such
devices and components intended for vehicles of categories other than M .
13.2. As from the official date of entry into force of Supplement 5 to the 01 series of amendments
to this Regulation, no Contracting Party applying this Regulation shall refuse to grant or
refuse to accept type approvals according to Supplement 5 to the 01 series of amendments.
13.3. Until twelve months after the date of entry into force of the Supplement 5 to the 01 series of
amendments, Contracting Parties applying this Regulation can continue to grant type
approvals according to the 01 series of amendments to this Regulation without taking into
account the provisions of Supplement 5."

Insert new Appendix 1, to read:
"ANNEX 2 – APPENDIX 1
LIST OF INSTALLATION DATA FOR A MECHANICAL COUPLING DEVICE OR A COMPONENT
DESIGNED FOR A SPECIFIC VEHICLE TYPE
1. Description of the vehicle type:
1.1. Trade name or mark of the vehicle;
1.2. Models or trade names of vehicles constituting the vehicle type, if available.
2. Masses of the towing and towed vehicles:
2.1. Maximum permissible masses of the towing and towed vehicles;
2.2. The distribution of the maximum permissible mass of the towing vehicle between the axles;
2.3. The maximum permissible vertical loading to be imposed on the coupling ball/hook of the
towing vehicle;
2.4. The loading condition at which the height of the tow ball of M Category vehicles is to be
measured – see Paragraph 2. of Annex 7, Appendix 1.
3. Specification of fixing points:
3.1. Details and/or drawings of the installation mounting points for the device or component and
of any additional reinforcing plates, support brackets and so on, necessary for reliable
attachment of the mechanical coupling device or component to the towing vehicle;
3.2. The vehicle manufacturer shall specify:
(a)
(b)
The number and location of the fixing points of the coupling device on the motor
vehicle;
The maximum permissible overhang of the coupling point;
(c) The height of the coupling point above the road surface as specified in Annex 7,
Paragraph 1.1.1. and the height of the coupling point in relation to the fixing points of
the coupling.

Annex 5,
Paragraph 1.2., amend to read:
"1.2. The shape and dimensions of towing brackets shall meet the requirements of the vehicle
manufacturer concerning the attachment points and additional mounting devices or
components, see Annex 2, Appendix 1."
Insert new Paragraph 12., to read:
"12. DRAWBAR TYPE COUPLINGS – CLASS W
12.1.1. Class W couplings shall as part of an automated sequence of actions automatically
mechanically connect the two vehicles and establish the electric and pneumatic braking
transmission connection.
12.1.2. Class W couplings shall, as part of an automated sequence of actions, automatically break
the electric and pneumatic braking transmission connection and mechanically disconnect
the two vehicles.
12.2. Class W couplings shall satisfy the relevant test requirements given in Annex 6,
Paragraph 3.3., with the exception of Paragraph 3.3.4. The closure and any locking devices
shall be tested by means of a static force of 0.25D acting in the direction of opening. The
test shall not cause the closure to open. The locking device shall be fully functional after the
test. A test force of 0.1D is sufficient in the case of cylindrical coupling pins.
12.3. The following minimum and simultaneous angles of articulation shall be possible with the
coupling not fitted to a vehicle but assembled, coupled, and in the same normal position as
when fitted to a vehicle:
12.3.1. ±90° horizontally about the vertical axis;
12.3.2. ±20° vertically about the horizontal transverse axis;
12.3.3. ±25° axial rotation about the horizontal longitudinal axis.
12.4. Class W coupling equipped with a remote control shall fulfil requirements of Paragraph 13.
of this Annex.
12.5. Class W coupling shall have a remote indication according to Paragraph 13. of this Annex."
Renumber former Paragraphs 12. to 12.3.7. as 13. to 13.3.7.
Renumbered Paragraph 13.2.1., amend to read:
"13.2.1. For an automatic coupling procedure, remote indication devices shall indicate the closed
and doubly locked position of the coupling in an optical manner according to
Paragraph 13.2.2. Additionally the open position may be indicated. In this case, the
indication shall be performed as in Paragraph 13.2.3.
The remote indication device shall be automatically activated and reset during every
opening and closing of the coupling."

Paragraph 3.5.2., amend to read (including the deletion of the formula for F ):
"3.5.2. Dynamic Test:
3.5.2.1. The dynamic test shall be a pulsating test using a Class L toroidal eye and with the coupling
mounted as it would be on a vehicle and with all of the necessary parts for vehicle
installation. However, any flexible components may be neutralized with the agreement of the
Type Approval Authority or Technical Service;
3.5.2.2. Hook type couplings intended for use with hinged drawbar trailers - where the imposed
vertical load on the coupling S is zero – shall be tested in the same manner as described in
Paragraph 3.3.2.
3.5.2.3. Hook type couplings intended for use with center axle trailers (S>0):
3.5.2.3.1. Hook type couplings intended for use with centre axle trailers ≤3.5t shall be tested in the
same way as described in 3.1 of this Annex.
3.5.2.3.2. Hook type couplings intended for use with centre axle trailers above 3.5t shall be tested in
the same way as described in Paragraph 3.3.3.2 of this Annex."
Delete Paragraph 3.5.2.4.
Paragraph 3.6.3., amend to read:
"3.6.3. In the case of steered axles, the resistance to bending shall be verified by theoretical
calculations or by a bending test. A horizontal, lateral static force shall be applied in the
center of the coupling point. The magnitude of this force shall be chosen so that a moment
of 0.6 × Av × g (kNm) is exerted about the front axle center. The permissible stresses shall
be in accordance with Paragraph 5.3. of ISO 7641/1:1983."

1.1.4. When the trailer is not coupled to the towing vehicle, the mounted towing bracket and
coupling ball/hook coupling shall not obscure the mounting space provided for the rear
registration plate or affect the visibility of the rear registration/ license plate of the towing
vehicle. If the coupling ball/hook coupling or other items do obscure the rear registration
plate they shall be removable or repositionable without the use of tools except, for example,
an easily operated (i.e. an effort not exceeding 20Nm) release key which is carried in the
vehicle.
"
Figure 25 a
Figure 25 b

Towing Couplings, Forks, Eyes, Fifth Wheels etc. Proposed Supplement 5 to the 01 Series.