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This Regulation applies to the behaviour of the steering mechanism of motor vehicles of category M1, and vehicles of category N1, with the maximum. ECE UNIFORM PROVISIONS CONCERNING THE APPROVAL OF: VEHICLES WITH REGARD TO STEERING EQUIPMENT Incorporating: Supplement 1. Regulation No 79 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of vehicles with.

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However, technologies have advanced to the point where automated systems propose to replace the driver in controlling various aspects of vehicle behavior. This submission is related to the following document s: The measurement of steering efforts on motor vehicles with a failure in the steering equipment.

– Transport – UNECE

A general cut-off of the ASE electrical or hydraulic control. The approval authority issuing the extension of approval shall assign a series number for such an extension and inform thereof the other Parties to the Agreement applying this Regulation by means of a communication form conforming to the model in Annex 1 to this Regulation. Advanced driver assistance steering systems shall only be approved in accordance with this Regulation where the function does not cause any deterioration in the performance of the basic steering system.

The approval mark shall be placed close to or on the vehicle data plate affixed by the manufacturer. Annex 2 to this Regulation gives examples of arrangements of approval marks. Priorities of signals on multiplexed data paths shall be stated wherever priority may be an issue affecting performance or safety as far as this Regulation is concerned.

In the case of tractors for semi-trailers, the mass may be repositioned approximately half way between the kingpin position resulting from the above loading conditions and the centreline of the rear axle s.

If alignment is not retained automatically, the trailer must be equipped with a suitable adjustment facility for maintenance.

Notice of approval or of extension or refusal of approval of a vehicle type pursuant to this Regulation shall be communicated to the Parties to the Agreement which apply this Regulation, by means of a form conforming to the model in Annex 1 to this Regulation. If the chosen provision selects a partial performance mode of operation under certain fault conditions, then these conditions shall be stated and the resulting limits of effectiveness defined. However for trailers with self-tracking steering equipment, the axle load ratio between unsteered or articulated steered axles and friction-steered axles shall be at least 1 under all loading conditions.


The marking shall be indelible and positioned so that it is visible when connecting the electrical interface referenced in Paragraph 2. Each unit shall be clearly and unambiguously identifiable e. The documentation shall be supported, by an analysis which shows, in overall terms, how the system will behave on the occurrence of any one of those specified faults which will have a bearing on vehicle control performance or safety.

Where provision is made for several arrangements of the mass on the axles, the distribution of the maximum mass between the axles shall be such that the mass on each axle is proportional to the maximum permissible mass for each axle.

Autonomous Steering Systems as defined in Paragraph 2.

EUR-Lex – X(01) – EN – EUR-Lex

This Regulation does not apply to: Trailers equipped with hydraulic steering transmissions shall comply also with Annex 5. Names and addresses of technical services responsible for conducting approval tests and of administrative departments.

Where functions are combined within a single unit or indeed within a single computer, but shown in multiple blocks in the block diagram for clarity and ease of explanation, only a single hardware identification marking shall be used. Except for parts of ASE r7 considered susceptible to breakdown as specified in Paragraph 5.

When a failure occurs, a change in the average steering ratio is permissible if the steering effort given in paragraph 6. In case of a failure, the driver shall be warned for example by warning signal or message display.

It is anticipated that future technology will also allow ec to be influenced or controlled by sensors and signals generated either on or off-board the vehicle.

An outline schematic showing these units in combination, shall be provided with both the equipment dce and the interconnections made clear. In the event of a failure within the energy transmission, with the exception of those parts wce in Paragraph 5. The application for approval of a ecd type with regard to the steering equipment shall be submitted by the vehicle manufacturer or by 7r9 duly accredited representative.

With the vehicle stationary, the steering system shall verify that none of the specified failures or defects is present before extinguishing the signal.

Provisions for the periodic technical inspection of steering equipment. The holder of the approval must ensure that results of the conformity of production tests are recorded and that the annexed documents remain available for a period determined in agreement with the approval authority or technical service.

This period must not exceed 10 years counted from the time when production is definitely discontinued. Adjustment devices for steering geometry must be such that after adjustment a positive connection can be established between the adjustable components by appropriate locking devices.


Steering equipment in which the steering forces result solely from one or more energy supplies when the equipment is intact, but in which the steering forces can be provided by the muscular effort of the driver alone if there is a fault in the steering integrated power systemsis also considered to be power assisted steering equipment; 2. ANNEX 3 Braking performance for vehicles using the same energy source to supply steering equipment and braking device 1. Application for approval 4. GRSP is expected to consider an informal proposal, addressing all issues, including a draft Addendum 1 to the M.

There shall not be any increase in the outer radius of the swept ecr width. The marking shall be in indelible form and positioned so that it is visible when connecting to the electrical interface referenced in Paragraph 3.

EUR-Lex Access to European Union law

See more related meetings. The type approval authority or technical service which has granted type approval may at any time verify the conformity control methods applied in each production facility. In this case paragraph 5. Provisions for motor vehicles 6. However, in the case where any mechanical part of the transmission is designed only to give eece feedback and is too weak to transmit the total sum of the steering forces, this system shall be considered to be purely hydraulic or purely electric steering transmission.

Provisions for Motor Vehicles 6.

The approval authority may then either:. There shall be a clear correspondence between these transmission links and the signals carried between Units. In the case of trailers the requirements of paragraphs 5. Depending on the arrangement of the steered wheels, the following types of steering equipment are distinguished: Penalties for Non-conformity of Production 9. Autonomous Steering Systems as e79 in paragraph 2.

Trailers equipped with a connector for the supply of electrical energy to the trailer steering system shall be marked r9 include the following information: In the case of any systems that use electrical energy for part or all of the energy supply, all performance tests shall be carried out under conditions of actual or simulated ecr load of all essential systems or systems components which share the same energy supply.