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and share experiences on ECE Regulation implementation with a continuing support from many Meeting on UN/ECE R13H, Braking for Passenger Vehicles . Regulation No H of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of passenger cars. ECE Regulation 90 (abbreviated “ECE R90”) is an ECE Regulation specifying design, construction, and performance requirements and test protocols for.

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This calculation shall be made for each axle having at least one directly controlled wheel. Auxiliary equipment may be supplied with energy from the electric transmission of the parking braking system provided that the supply of energy is sufficient to allow the actuation of the parking braking system in addition to the vehicle electrical load under non-fault conditions. EU case law Case law Digital reports Directory of case law.

If these latter conditions are not fulfilled, the red warning signal specified in paragraph 5.

ECE Regulation 90

Hydraulic braking systems with stored energy. Performance on differing adhesion surfaces.

A break in the wiring within the electrical transmission, or an electrical failure in the control of the parking braking system shall be signalled to the driver by the yellow warning signal specified in paragraph 5. In addition to the requirements of this annex, Brake Assist Systems shall also be subject to any relevant requirements contained elsewhere within this Regulation. Alternatively, a sensing device per wheel twin wheels are considered as a single wheelwhich will warn the driver at his driving position when lining replacement is necessary, is acceptable.

A vehicle equipped with a category 2 anti-lock system shall meet all the requirements of this annex, except those of paragraph 5. The computation of lateral displacement is performed using double integration with respect to time of the measurement of lateral acceleration at the vehicle centre of gravity, as expressed by the formula:.

Inertia dynamometer test method for brake linings 8. This shall be measured as the brake pedal force is increasing. The tests may be conducted without a regenerative braking component. If any 0,5 A increment, up to 6,5 A, is greater than degrees, the steering amplitude of the final run shall be degrees.

The coefficient of adhesion of the road surface shall be measured with the vehicle under test, by the method described in paragraph 1. For the approval of any vehicle, the braking performance shall be measured during road tests conducted in the following conditions:.


As from the date of entry into force of Supplement 16 to this Regulation no Contracting Party applying this Regulation shall refuse to grant or refuse to accept Type Approvals to this Regulation as amended by Supplement The second peak yaw rate is defined as the first local yaw rate peak produced by the reversal of the steering wheel.

Phase shifts are especially significant when measured variables are multiplied together to form new variables, because while amplitudes multiply, phase shifts and associated time delays add. For vehicles equipped with an electrical regenerative braking system of category B, the recovery test efe be made with no regenerative braking component, i.

In ecf case where the failure condition causes the electric component to deliver its maximum braking force. The secondary braking system shall give a stopping distance not exceeding the following value:. The set of braking systems with which a vehicle is equipped shall satisfy the requirements laid down for service, secondary and parking braking systems.

– Transport – UNECE

The dynamic load on the axle shall be that given by the formulae in Annex 5 to this Regulation. Checking the wear of the service brake friction components 5. This annex defines the required braking performance for road vehicles fitted with anti-lock systems.

The road shall have a surface affording good adhesion, unless specified otherwise in the relevant annexes. With the parking brake released, the service braking system shall be able to fulfil the following requirements:. All ballast shall be secured in a way that prevents it from becoming dislodged during testing. Additional requirements for vehicles equipped with electric regenerative braking systems. For vehicles fitted with an electric regenerative braking system of either category, all the relevant prescriptions shall apply except paragraph 5.

Functions of the braking equipment The braking equipment defined in paragraph 2. Disconnection of the braking surfaces of the parking braking system shall be permitted only on condition that the disconnection is controlled exclusively by the driver from his driving seat, by a system incapable of being brought into action by a leak.

Any separate electric regenerative braking control which is provided, shall not be used during the Type-0 tests. The temperature of the cooling air shall be the ambient temperature. Characteristics of braking systems 5.


The combination performance shall be verified by calculations referring to the maximum braking performance actually achieved by the motor vehicle alone laden during the Type-0 test with the engine disconnected, using the following formula no practical tests with a coupled unbraked trailer are required:.

ECE Regulation 90 – Wikipedia

The manufacturer shall notify the Technical Service of the required brake pedal input at the time of submission of the application for type-approval. The secondary braking system r13y make it possible by application of the service brake control to halt the vehicle within a reasonable distance in the event of failure of the service braking system.

Minimum mass of vehicle: The absolute value of the six A values calculated is averaged and cee to the nearest 0,1 degrees to produce the final quantity, A, used below.

Brake linings tested to all relevant prescriptions of Annex 3 … 2. An approval number shall be assigned to each type approved, its first two digits 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. This requirement shall not apply to a parking brake control when it is mechanically locked in an applied position.

The following conditions may also be used: This documentation shall itemise the parameters being monitored and shall set out, for each fault condition of the type defined in paragraph 3. This document is an excerpt from the EUR-Lex website. The test vehicle is driven around a circle 30 meters in diameter at a speed that produces a lateral acceleration of approximately 0,5 to 0,6 g for three clockwise laps followed by three anticlockwise laps.

The driver shall be able to achieve this braking action from his driving seat without removing his hands from the steering control. The vehicle shall be driven at the test speed in a straight line. Expand all Collapse all. At the end of the Type-I test described in paragraph 1.