Regulation No. 58-01

Name:Regulation No. 58-01
Description:Underrun Device - Rear.
Official Title:Uniform Provisions Concerning the Approval of: I. Rear Underrun Protective Devices (RUPDs); II. Vehicles with Regard to the Installation of an RUPD of an Approved Type; III. Vehicles with Regard to their Rear Underrun Protection (RUP).
Country:ECE - United Nations
Date of Issue:1983-07-11
Amendment Level:01 Series
Number of Pages:27
Vehicle Types:Component, Heavy Truck, Trailer
Subject Categories:Prior Versions
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Keywords:

approval, vehicle, regulation, type, rupd, rear, test, annex, production, paragraph, approved, granted, requirements, device, part, number, rup, authority, manufacturer, technical, tests, agreement, communication, conformity, service, form, competent, means, extension, underrun, protective, vehicles, application, regard, parties, mark, conducting, responsible, applying, pursuant, position, maximum, ensure, applied, type-approval, points, force, administrative, model, installation

Text Extract:

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E/ECE/324 )
E/ECE/TRANS/505 ) Rev.1/Add.57/Rev.1
May 9, 1998
STATUS OF UNITED NATIONS REGULATION
ECE 58
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
I. REAR UNDERRUN PROTECTIVE DEVICES (RUPDs)
II.
III.
VEHICLES WITH REGARD TO THE INSTALLATION OF AN RUPD OF AN
APPROVED TYPE
VEHICLES WITH REGARD TO THEIR REAR UNDERRUN PROTECTION (RUP)
Incorporating:
01 series of amendments Date of Entry into Force: 25.03.89

REGULATION NO. 58
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
I. REAR UNDERRUN PROTECTIVE DEVICES (RUPDs)
II.
III.
VEHICLES WITH REGARD TO THE INSTALLATION OF AN RUPD OF AN APPROVED
TYPE
VEHICLES WITH REGARD TO THEIR REAR UNDERRUN PROTECTION (RUP)
CONTENTS
REGULATION
1.
Scope
2.
Purpose
3.
Definitions common to Parts I, II and III
PART I
APPROVAL OF RUPDs
4.
Definitions
5.
Application for approval
6.
Approval
7.
Requirements
8.
Conformity of production
9.
Penalties for non-conformity of production
10.
Modification and extension of approval of an RUPD type
11.
Production definitely discontinued
12.
Names and addresses of technical services responsible for conducting approval tests, and
of administrative departments
PART II
APPROVAL OF A VEHICLE WITH REGARD TO THE INSTALLATION OF
AN RUPD OF AN APPROVED TYPE
13.
Definitions
14.
Application for approval
15.
Approval
16.
Requirements for installation of an approved RUPD
17.
Conformity of production
18.
Penalties for non-conformity of production
19.
Modification and extension of approval of a vehicle type
20.
Production definitely discontinued
21.
Names and addresses of technical services responsible for conducting approval tests, and
of administrative departments

REGULATION NO. 58
UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
I. REAR UNDERRUN PROTECTIVE DEVICES (RUPDs)
II.
III.
VEHICLES WITH REGARD TO THE INSTALLATION OF AN RUPD OF AN APPROVED
TYPE
VEHICLES WITH REGARD TO THEIR REAR UNDERRUN PROTECTION (RUP)
1. SCOPE
1.1. This Regulation applies to:
1.1.1. PART I: the RUPDs which are intended to be fitted to vehicles of Categories N , N , 0 and
0 .;
1.1.2.
PART II: the installation on vehicles of Categories N , N , O and O
of RUPDs which
have been type-approved to Part I of this Regulation;
1.1.3. PART III: vehicles of Categories N , N , O and O equipped with an RUPD which has
not been separately approved according to Part I of this Regulation or so designed and/or
equipped that its component parts can be regarded as totally or partially fulfilling the function
of the RUPD.
1.2. This Regulation does not apply to:
1.2.1. Tractive units for articulated vehicles;
1.2.2. Trailers specially designed and constructed for the carriage of very long loads of indivisible
length, such as timber, steel bars, etc.;
1.2.3. Vehicles where any RUPD is incompatible with their use.
2. PURPOSE
The purpose of this Regulation is to offer effective protection against underrunning of
vehicles mentioned in paragraph 1 of this Regulation in the event of rear collision with
vehicles of Category M and N .
3. DEFINITIONS COMMON TO PARTS I, II AND III
3.1. For the purposes of this Regulation:
3.1.1. "Unladen mass" means the mass of the vehicle in running order, unoccupied and unladen
but complete with fuel, coolant, lubricant, tools and a spare wheel (if provided as standard
equipment by the vehicle manufacturer);

6.3. Notice of approval, or of extension or of refusal of a approval of type of RUPD pursuant to
this Regulation shall be communicated to the Parties to the 1958 Agreement which apply
this Regulation, by means of a form conforming to the model in Annex 1 to this Regulation.
6.4. There shall be affixed, conspicuously and in a readily accessible place specified on the
approval form, to every RUPD conforming to a type of RUPD approved under this
Regulation an International approval mark consisting of:
6.4.1. A circle surrounding the letter "E" followed by the distinguishing number of the country which
has granted approval;
6.4.2. The number of this Regulation, followed by the letter "R", a dash and the approval number
to the right of the circle prescribed in Paragraph 6.4.1.
6.5. The approval mark shall be clearly legible and be indelible.
6.6. Annex 4 to this Regulation gives examples of arrangements of approval marks.
7. REQUIREMENTS
7.1. The section height of the cross-member must not be less than 100 mm. The lateral
extremities of the cross-member must not bend to the rear or have a sharp outer edge; this
condition is fulfilled when the lateral extremities of the cross-member are rounded on the
outside and have a radius of curvature of not less than 2.5 mm.
7.2. The RUPD may be so designed to have several positions at the rear of the vehicle. In this
event, there must be a guaranteed method of securing it in the service position so that any
unintentional change of position is precluded. The force applied by the operator to vary the
position of the device must not exceed 40 daN.
7.3. The RUPD must offer adequate resistance to forces applied parallel to the longitudinal axis
of the vehicle. (This shall be demonstrated in accordance with the test procedure and test
conditions specified in Annex 5 to this Regulation). The maximum horizontal deflection of
the RUPD observed during and after the application of the test forces specified in Annex 5
shall be recorded on the type-approval communication (Annex 1, item 8).
8. CONFORMITY OF PRODUCTION
8.1. Every rear underrun protective device approved under this Regulation shall be so
manufactured as to conform to the type-approved by meeting the requirements set out in
Paragraph 7 above.
8.2. In order to verify that the requirements of Paragraph 8.1 are met, suitable checks of the
production shall be carried out.

10. MODIFICATION AND EXTENSION OF APPROVAL OF AN RUPD TYPE
10.1. Every modification of the RUPD type shall be notified to the administrative department
which approved the RUPD type. The department may then either:
10.1.1. Consider that the modifications made are unlikely to have an appreciable adverse effect and
that in any case the RUPD still complies with the requirements; or
10.1.2. Require a further test report from the technical service responsible for conducting the tests.
10.2. Confirmation or refusal of approval, specifying the alterations shall be communicated by the
procedure specified in Paragraph 6.3 above to the Parties to the Agreement applying this
Regulation.
10.3. The competent authority issuing the extension of approval shall assign a series number of
such an extension and inform thereof the other Parties to the 1958 Agreement applying this
Regulation by means of a communication form conforming to the model in Annex 1 to this
Regulation.
11. PRODUCTION DEFINITELY DISCONTINUED
If the holder of the approval completely ceases to manufacture a type of rear underrun
protective device 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 Parties to the 1958 Agreement applying this
Regulation by means of a communication form conforming to the model in Annex 1 to this
Regulation.
12. NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR
CONDUCTING APPROVAL TESTS, AND OF ADMINISTRATIVE DEPARTMENTS
The Parties to the 1958 Agreement applying this Regulation shall communicate to the
United Nations Secretariat the names and addresses of the technical services responsible
for conducting approval tests and of the administrative departments which grant approval
and to which forms certifying approval or extension or refusal or withdrawal of approval,
issued in other countries, are to be sent.
PART II
APPROVAL OF A VEHICLE WITH REGARD TO THE INSTALLATION
OF AN RUPD OF AN APPROVED TYPE
13. DEFINITIONS
13.1. For the purposes of Part II of this Regulation:
13.1.1. "Approval of a vehicle" means the approval of a vehicle type with regard to the
installation of an RUPD of an approved type according to Part I of this Regulation;

15.2. An approval number shall be assigned to each type-approved. Its first two digits (at present
01 corresponding to the 01 series of amendments which entered into force on
March 25, 1989) shall indicate the series of amendments incorporating the most recent
major technical amendments made to the Regulation at the time of issue of the approval.
The same Contracting Party may not assign the same number to another vehicle type.
15.3. Notice of approval or of extension or of refusal of approval of a vehicle type pursuant to this
Regulation shall be communicated to the Parties to the 1958 Agreement which apply this
Regulation, by means of a form conforming to the model in Annex 2 to this Regulation.
15.4. There shall be affixed, conspicuously and in a readily accessible place specified on the
approval form, to every vehicle conforming to a vehicle type-approved under this Regulation
an international approval mark consisting of:
15.4.1. A circle surrounding the letter "E" followed by the distinguishing number of the country which
has granted approval;
15.4.2. The number of this Regulation, followed by the letter "R", a dash and the approval number
to the right of the circle prescribed in Paragraph 15.4.1.
15.5. If the vehicle conforms to a vehicle type-approved, under one or more other Regulations
annexed to the Agreement, in the country which has granted approval under this
Regulation, the symbol prescribed in Paragraph 15.4.1 need not be repeated; in such a
case the Regulation and approval numbers and the additional symbols of all the Regulations
under which approval has been granted in the country which has granted approval under
this Regulation shall be placed in vertical columns to the right of the symbol prescribed in
Paragraph 15.4.1.
15.6. The approval mark shall be clearly legible and be indelible.
15.7. The approval mark shall be placed close to or on the vehicle data plate affixed by the
manufacturer.
15.8. Annex 4 to this Regulation gives examples of arrangements of approval marks.
16. REQUIREMENTS FOR INSTALLATION OF AN APPROVED RUPD
16.1. The ground clearance with respect to the underside of the protective device, even when the
vehicle is unladen, must not exceed 550 mm over its entire width and shall be such that the
height above the ground of the points of application of the test forces applied to the device
according to Part I of this Regulation and recorded in the type-approval communication form
(Annex 1, item 7) does not exceed 600 mm.

17.6. The normal frequency of inspections authorised by the competent authority shall be one
every year. In cases where unsatisfactory results are found during one of these inspections,
the competent authority shall ensure that all necessary steps are taken to restore conformity
of production as rapidly as possible.
18. PENALTIES FOR NON-CONFORMITY OF PRODUCTION
18.1. The approval granted in respect of a vehicle type pursuant to this Regulation may be
withdrawn if the requirements set forth above are not met.
18.2. If a Contracting Party to the Agreement applying 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 communication form conforming to the model in Annex 2 to this
Regulation.
19. MODIFICATION AND EXTENSION OF APPROVAL OF A VEHICLE TYPE
19.1. Every modification of the vehicle type shall be notified to the administrative department
which approved the vehicle type. The department may then either:
19.1.1. Consider that the modifications made are unlikely to have an appreciable adverse effect and
that in any case the vehicle still complies with the requirements; or
19.1.2. Require a further test report from the technical service responsible for conducting the tests.
19.2. Confirmation or refusal of approval, specifying the alteration, shall be communicated by the
procedure specified in Paragraph 15.3 above to the Parties to the Agreement applying this
Regulation.
19.3. The competent authority issuing the extension of approval shall assign a series number for
such an extension and inform thereof the other Parties to the 1958 Agreement applying this
Regulation by means of a communication form conforming to the model in Annex 2 to this
Regulation.
20. PRODUCTION DEFINITELY DISCONTINUED
If the holder of the approval completely ceases to manufacturer a type 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 Parties to the 1958 Agreement applying this Regulation by means of a communication
form conforming to the model in Annex 2 to this Regulation.
21. NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR
CONDUCTING APPROVAL TESTS, AND OF ADMINISTRATIVE DEPARTMENTS
The Parties to the 1958 Agreement applying this Regulation shall communicate to the
United Nations Secretariat the names and addresses of the technical services responsible
for conducting approval tests and of the administrative departments which grant approval
and to which forms certifying approval or extension or refusal or withdrawal of approval,
issued in other countries, are to be sent.

23.4. The competent authority shall verify the existence of satisfactory arrangements for ensuring
effective checks on conformity of production before type-approval is granted.
24. APPROVAL
24.1. If the vehicle submitted for approval pursuant to this Regulation meets the requirements of
Paragraph 25 below, approval of that vehicle type shall be granted.
24.2. An approval number shall be assigned to each type-approved. Its first two digits (at present
01 corresponding to the 01 series of amendments which entered into force on
March 25, 1989) shall indicate the series of amendments incorporating the most recent
major technical amendments made to the Regulation at the time of issue of the approval.
The same Contracting Party may not assign the same number to another vehicle type.
24.3. Notice of approval or of extension or of refusal of approval of a vehicle type pursuant to this
Regulation shall be communicated to the Parties to the 1958 Agreement which apply this
Regulation, by means of a form conforming to the model in Annex 3 to this Regulation.
24.4. There shall be affixed, conspicuously and in a readily accessible place specified on the
approval form, to every vehicle conforming to a vehicle type-approved under this Regulation
an international approval mark consisting of:
24.4.1. A circle surrounding the letter "E" followed by the distinguishing number of the country which
has granted approval;
24.4.2. The number of this Regulation, followed by the letter "R", a dash and the approval number
to the right of the circle prescribed in Paragraph 24.4.1.
24.5. If the vehicle conforms to a vehicle type-approved, under one or more other Regulations
annexed to the Agreement, in the country which has granted approval under this
Regulation, the symbol prescribed in Paragraph 24.4.1 need not be repeated; in such a
case the Regulation and approval numbers and the additional symbols of all the Regulations
under which approval has been granted in the country which has granted approval under
this Regulation shall be placed in vertical columns to the right of the symbol prescribed in
Paragraph 24.4.1.
24.6. The approval mark shall be clearly legible and be indelible.
24.7. The approval mark shall be placed close to or on the vehicle data plate affixed by the
manufacturer.
24.8. Annex 4 to this Regulation gives examples of arrangements of approval marks.

26.3.3. Ensure that test result data are recorded and that the annexed documents remain available
for a period to be determined in agreement with the administrative service;
26.3.4. Analyse the results of each type of test, in order to verify and ensure the consistency of
characteristics of the RUP, making allowance for permissible variations in industrial
production;
26.3.5. Ensure that for each type of vehicle sufficient checks and tests are carried out regarding the
dimensions, materials and performance of the components, which fulfil the function of the
RUP and of those used for the installation on the vehicle;
26.3.6. Ensure that any set of samples or test pieces giving evidence of non-conformity in the type
of test in question shall give rise to a further sampling and test. All necessary steps shall be
taken to restore conformity of the corresponding production.
26.4. The competent authority which has granted type-approval may at any time verify the
conformity control methods applied in each production unit.
26.4.1. At every inspection, the test records and production records shall be presented to the
visiting inspector.
26.4.2. The inspector may select samples at random to be tested in the manufacturer's laboratory.
The minimum number of samples may be determined according to the results of the
manufacturers' own checks.
26.4.3. Where the quality level appears unsatisfactory or it seems necessary to verify the validity of
the tests carried out in application of Paragraph 26.4.2, the inspector shall select samples to
be sent to the technical service which conducted the type-approval tests.
26.4.4. The competent authority may carry out any test prescribed in this Regulation.
26.4.5. The normal frequency of inspections authorized by the competent authority shall be one
every two years. In cases where unsatisfactory results are found during one of these
inspections, the competent authority shall ensure that all necessary steps are taken to
restore conformity of production as rapidly as possible.
27. PENALTIES FOR NON–CONFORMITY OF PRODUCTION
27.1. The approval granted in respect of a vehicle type pursuant to this Regulation may be
withdrawn if the requirements set forth above are not met or if the vehicle has failed to pass
the test prescribed in Annex 5.
27.2. If a Contracting Party to the Agreement applying 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 communication form conforming to the model in Annex 3 to this
Regulation.

ANNEX 1
(Maximum format: A4 (210 x 297 mm))
COMMUNICATION
issued by:
Name of administration:
.............................................
.............................................
.............................................
concerning:
APPROVAL GRANTED
APPROVAL EXTENDED
APPROVAL REFUSED
APPROVAL WITHDRAWN
PRODUCTION DEFINITELY DISCONTINUED
of a type of: rear underrun protective device (RUPD)
pursuant to Regulation No. 58
Approval No .............................. Extension No. ................................
1. Trade name or mark of device ...................................................................................................
2. Type of device............................................................................................................................
3. Name and address of manufacturer ..........................................................................................
...................................................................................................................................................
4. If applicable, name and address of manufacturer's representative ...........................................
...................................................................................................................................................
5. Characteristics of the device (dimensions and its fixing elements) ...........................................
...................................................................................................................................................
6. Test conducted on a rigid bench/on a vehicle/on a representative part of the chassis of a
vehicle

ANNEX 2
(Maximum format: A4 (210 x 297 mm))
COMMUNICATION
Issued by:
Name of administration:
.............................................
.............................................
.............................................
concerning:
APPROVAL GRANTED
APPROVAL EXTENDED
APPROVAL REFUSED
APPROVAL WITHDRAWN
PRODUCTION DEFINITELY DISCONTINUED
of a type of:
a vehicle type with regard to the installation of a rear underrun protective device
(RUPD) of an approved type
pursuant to Part II of Regulation No. 58
Approval No .............................. Extension No .................................
1. Trade name or mark of the vehicle ............................................................................................
2. Vehicle type................................................................................................................................
3. Manufacturer's name and address ............................................................................................
...................................................................................................................................................
4. If applicable, name and address of manufacturer's representative ...........................................
...................................................................................................................................................
5. Brief description of the vehicle type as regards its dimensions and lines..................................
...................................................................................................................................................
6. Trade name or mark of the RUPD(s) and its/their approval number(s).....................................
...................................................................................................................................................
7. Maximum mass of vehicle..........................................................................................................

ANNEX 3
(Maximum format: A4 (210 x 297 mm)
COMMUNICATION
issued by:
Name of administration:
.............................................
.............................................
.............................................
concerning:
APPROVAL GRANTED
APPROVAL EXTENDED
APPROVAL REFUSED
APPROVAL WITHDRAWN
PRODUCTION DEFINITELY DISCONTINUED
of a type of: a vehicle with regard to its rear underrun protection (RUP)
pursuant to Part III of Regulation No. 58
Approval No .............................. Extension No .................................
1. Trade name or mark of the vehicle ............................................................................................
2. Vehicle type................................................................................................................................
3. Manufacturer's name and address ............................................................................................
4. If applicable, name and address of manufacturer's representative ...........................................
5. Brief description of the vehicle type as regards its structure, dimension, lines and any fixing
elements.....................................................................................................................................
...................................................................................................................................................
6. Brief description of the RUP, as regards its dimensions and constituent materials ..................
7. Maximum mass of vehicle..........................................................................................................
8. Value of force applied in test......................................................................................................

ANNEX 4
ARRANGEMENTS OF APPROVAL MARKS
Model A
(see Paragraphs 6.4, 15.4, 24.4 of this Regulation)
The above approval mark affixed to a vehicle or to an RUPD shows that the vehicle type or RUPD type
concerned has, with regard to the rear underrun protection in the event of a collision, been approved in
the Netherlands (E4) pursuant to Regulation No. 58 under approval number 012439. The first two digits
of the approval number indicate that the approval was granted in accordance with the requirements of
Regulation No. 58 as amended by the 01 series of amendments.
Model B
(see Paragraphs 6.5, 15.5, 24.5 of this Regulation)
The above approval mark affixed to a vehicle shows that the vehicle type concerned has been approved
in the Netherlands (E4) pursuant to Regulations Nos. 58 and 31. The approval numbers indicate that,
at the dates when the respective approvals were given, Regulations No. 58 included the 01 series of
amendments and Regulation No. 31 was still in its original form.

3.1.1. A horizonal force of 100 kN or 50% of the force generated by the maximum mass of the
vehicle, whichever is the lesser, shall be applied consecutively to two points situated
symmetrically about the centre line of the device or of the vehicle whichever is applicable at
a minimum distance apart of 700 mm and a maximum of 1 m. The exact location of the
points of application shall be specified by the manufacturer.
3.1.2. In the cases defined in Paragraphs 1.1.1 and 1.1.2 of this Annex a horizontal force of 25 kN
or 12.5% of the force generated by the maximum mass of the vehicle, whichever is the
lesser, shall be applied consecutively to two points located 300 ± 25 mm from the
longitudinal planes tangential to the outer edges of the wheels on the rear axle and to a third
point located on the line joining these two points, in the median vertical plane of the vehicle.
3.1.3. In the cases defined in Paragraph 1.1.3 of this Annex a horizontal force of 25 kN or 12.5%
of the force generated by the maximum mass of the vehicle for which the device is intended,
whichever is the lesser, shall be applied consecutively to two points located at the discretion
of the manufacturer of the rear underrun protective device and to a third point located on the
line joining these two points, in the median vertical plane of the device.
Underrun Device - Rear.