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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The hydraulic lines of hydraulic transmission shall be capable of a burst pressure at least four times the maximum normal service pressure T specified by the vehicle manufacturer. The approval number indicates that the approval was granted in accordance with the requirements of Regulation No.
– Transport – UNECE
The manufacturer shall, by the use of this identification, affirm that the equipment supplied conforms to the corresponding document. The steering control, The steering transmission, The steered wheels, The energy supply, if any.
It r9 be possible to travel along a straight section of road without unusual steering correction by the driver and without unusual vibration in the steering system at the maximum design speed of the vehicle.
Steering effort required to achieve a turning circle of 12m radius with an intact system and 20m radius with a system in the failed condition 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.
Ecr intention of the Regulation is to establish uniform ecr for the layout and performance of steering systems fitted to vehicles used on the road. Provisions for the periodic eec inspection of steering equipment.
After any failure in the steering equipment, or the energy supply, it shall be possible after eight full stroke actuations of the service brake control, to achieve at the ninth application, at least the performance prescribed for the secondary emergency braking system See table below. It r97 the electrical wiring and connector and includes the parts for data communication and the electrical energy supply for the trailer control transmission.
In the event of a failure within the energy transmission, with the exception of those parts listed in paragraph 5. It shall be accompanied d79 the undermentioned documents in triplicate, and by the following particulars:. 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 efe 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.
Power-driven vehicles shall be capable of providing steering failure and defect warning signals, as follows:. Conformity of production 8. The energy level to be used for the tests referred to in paragraphs 5. Aimed particularly at reducing injuries to the elderly, the test sets a 42 mm ThCC threshold that will be strengthened to 34 mm for the HIII 5F in via the 01 series amendments.
The steering effort shall be measured until the position of the steering control r799 to the turning radius given in the table below for the particular category of vehicle with a failure in the steering equipment. With the vehicle stationary, the steering system shall verify that none of the specified failures or defects is present before extinguishing the signal.
Should the engine stop or a part of the transmission fail, with the exception of those parts listed in paragraph 5. Malfunction or failure of any part of the ASE except for parts not considered to the susceptible to breakdown as specified in paragraph 5. Alternatively this protection requirement is fulfilled when a secondary means of checking the correct operational status is available.
In the case of trailers the requirements of paragraphs 5. Mechanical steering transmissions Paragraph 5. Model B See Paragraph 4. Proposal for amendments Document Reference Number: As far as practicable and subject to agreement between the vehicle manufacturer and the type approval authority, the steering equipment and its installation shall be so designed that, without disassembly, its operation can be checked with, if necessary, commonly used measuring instruments, methods or test equipment.
In addition the braking performance on the first subsequent application shall comply with the prescriptions of paragraph 3. It must be possible to verify in a simple way the correct operational status of those Electronic Systems, which have control over steering.
Where applicable, a yellow warning signal indicating an electrically detected defect within the steering equipment, which is not indicated by the red warning signal. This shall be verified by the following tests: Brief description of the steering equipment: 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 4.
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This looked at whether such vehicles could be tested in the UK and which areas of legislation would need to be changed prior to everyday use of driverless cars.
Any failure in a transmission other than purely mechanical must clearly be brought to the attention of the vehicle driver as given in paragraph 5. In the event of a failure within the energy transmission, with the exception of those parts listed in Paragraph 5.
This document concerns UN Regulation No. The nominal operating voltage is 24V.
EUR-Lex Access to European Union law
If such systems are ecee, they shall not be deactivated during type approval testing of the steering system. The steering equipment shall be designed, constructed and fitted in such a way that eec is capable of withstanding the stresses arising during normal operation of the vehicle, or combination of vehicles.
This requirement must be met e79 the point the tangent meets the circle to a point 40m along the tangent. Warning Signals in Case of Failure 2. Types of steering transmission Depending on the way the steering forces are transmitted, the following types of steering transmission are distinguished: A4 x mm issued by: See more related meetings. In case of a failure within the control transmission, with the exception of those parts listed in paragraph 5.
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. However in the case of a failure in any system which shares the same energy supply steering shall be ensured in accordance with the relevant failure conditions of Paragraph 5.