Particular Specifications. In addition to the general specifications prescribed in paragraph 5.2, the device to prevent unauthorized use shall meet the particular conditions prescribed below: 5.3.1. Devices to prevent unauthorized use acting on the steering 5.3.1.1. A device to prevent unauthorized use acting on the steering shall render the steering inoperative. Before the engine can be started, the normal steering operation must be restored. 5.3.1.2. When the device to prevent unauthorized use is set to act, it shall not be possible to prevent the device from functioning. 5.3.1.3. The device to prevent unauthorized use must continue to meet the requirements of paragraphs 5.2.11., 5.3.1.1., 5.3.1.2. and 5.3.1.4. after it has undergone 2,500 locking cycles in each direction of the wear producing test specified in Part 1 of Annex 4 to this Regulation. 5.3.1.4. The device to prevent unauthorized use shall, in its activated position, satisfy one of the following criteria: 5.3.1.4.1. It shall be strong enough to withstand, without damage to the steering mechanism likely to compromise safety, the application of a torque of 300 Nm about the axis of the steering spindle in both directions under static conditions. 5.3.1.4.2. It shall incorporate a mechanism designed to yield or slip, such that the system will withstand, either continuously or intermittently, the application of a torque of at least 100 Nm. The locking system must still withstand the application of this torque after the test specified in Part 2 of Annex 4 to this Regulation. 5.3.1.4.3. It shall incorporate a mechanism designed to permit the steering wheel to rotate freely on the blocked steering spindle. The blocking mechanism shall be strong enough to withstand the application of a torque of 200 Nm about the axis of the steering spindle in both directions under static conditions. 5.3.1.5. If the device to prevent unauthorized use is such that the key can be removed in a position other than the position in which the steering is inoperative, it shall be so designed that the manoeuvre required to reach that position and remove the key cannot be effected inadvertently. 5.3.1.6. If a component fails such that the torque requirements specified in paragraphs 5.3.1.4.1., 5.3.1.4.2. and 5.3.1.4.3. cannot be easily applied, yet the steering system remains blocked, the system shall satisfy the requirements. 5.3.2. Devices to prevent unauthorized use by acting on the transmission or on brakes. 5.3.2.1. A device to prevent unauthorized use acting on the transmission shall prevent the rotation of the vehicle's driving wheels. 5.3.2.2. A device to prevent unauthorized use by acting on brakes shall brake at least one wheel on each side of at least one axle 5.3.2.3. When the device to prevent unauthorized use is set to act, it shall not be possible to prevent the device from functioning. 5.3.2.4. It shall not be possible for the transmission or brakes to be blocked inadvertently when the key is in the lock of the device to prevent unauthorized use, even if the device preventing starting of the engine has come into action or been set to act. This does not apply wherever the requirements of paragraph
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Particular Specifications. In addition to the general specifications prescribed in paragraph 5.2, the device to prevent unauthorized use shall meet the particular conditions prescribed below:
5.3.1. Devices to prevent unauthorized use acting on the steering
5.3.1.1. A device to prevent unauthorized use acting on the steering shall render the steering inoperative. Before the engine can be started, the normal steering operation must be restored.
5.3.1.2. When the device to prevent unauthorized use is set to act, it shall not be possible to prevent the device from functioning.
5.3.1.3. The device to prevent unauthorized use must continue to meet the requirements of paragraphs 5.2.11., 5.3.1.1., 5.3.1.2. and 5.3.1.4. after it has undergone 2,500 locking cycles in each direction of the wear producing test specified in Part 1 of Annex 4 to this Regulation.
5.3.1.4. The device to prevent unauthorized use shall, in its activated position, satisfy one of the following criteria:
5.3.1.4.1. It shall be strong enough to withstand, without damage to the steering mechanism likely to compromise safety, the application of a torque of 300 Nm about the axis of the steering spindle in both directions under static conditions.
5.3.1.4.2. It shall incorporate a mechanism designed to yield or slip, such that the system will withstand, either continuously or intermittently, the application of a torque of at least 100 Nm. The locking system must still withstand the application of this torque after the test specified in Part 2 of Annex 4 to this Regulation.
5.3.1.4.3. It shall incorporate a mechanism designed to permit the steering wheel to rotate freely on the blocked steering spindle. The blocking mechanism shall be strong enough to withstand the application of a torque of 200 Nm about the axis of the steering spindle in both directions under static conditions.
5.3.1.5. If the device to prevent unauthorized use is such that the key can be removed in a position other than the position in which the steering is inoperative, it shall be so designed that the manoeuvre required to reach that position and remove the key cannot be effected inadvertently.
5.3.1.6. If a component fails such that the torque requirements specified in paragraphs 5.3.1.4.1., 5.3.1.4.2. and 5.3.1.4.3. cannot be easily applied, yet the steering system remains blocked, the system shall satisfy the requirements.
5.3.2. Devices to prevent unauthorized use by acting on the transmission or on brakes.
5.3.2.1. A device to prevent unauthorized use acting on the transmission shall prevent the rotation of the vehicle's driving wheels.
5.3.2.2. A device to prevent unauthorized use by acting on brakes shall brake at least one wheel on each side of at least one axle
5.3.2.3. When the device to prevent unauthorized use is set to act, it shall not be possible to prevent the device from functioning.
5.3.2.4. It shall not be possible for the transmission or brakes to be blocked inadvertently when the key is in the lock of the device to prevent unauthorized use, even if the device preventing starting of the engine has come into action or been set to act. This does not apply wherever the requirements of paragraphparagraph 5.3.2. of this Regulation are met by devices used for another purpose in addition and the lock under the conditions above is necessary for this additional function (e.g. electrical parking brake).
5.3.2.5. The device to prevent unauthorized use shall be so designed and constructed that it remains fully effective even after some degree of wear as a result of 2,500 locking cycles in each direction. In the case of protective device acting on brakes, each mechanical or electrical sub-part of the device is concerned.
5.3.2.6. If the device to prevent unauthorized use is such that the key can be removed in a position other than the position in which the transmission or brakes are locked, it shall be so designed that the manoeuvre required to reach that position and remove the key cannot be executed inadvertently.
5.3.2.7. In the case when the protective device acting on the transmission is used, it shall be strong enough to withstand, without damage likely to compromise safety, the application in both directions and in static conditions of a torque 50 per cent greater than the maximum torque that can normally be applied to the transmission. In determining the level of this testing torque account shall be taken, not of the maximum engine torque, but of the maximum torque that can be transmitted by the clutch or by the automatic transmission.
5.3.2.8. In the case of a vehicle equipped with protective device acting on brakes, the device must be capable of holding the laden vehicle stationary on a 20 per cent up or down-gradient.
5.3.2.9. In the case of a vehicle equipped with protective device acting on brakes, the requirements of this Regulation shall not be construed as a departure from the requirements of Regulation No. 13 or 13-H even in the case of a failure.
5.3.3. Devices to prevent unauthorized use acting on the gearshift control
5.3.3.1. A device to prevent unauthorized use acting on the gearshift control shall be capable of preventing any change of gear.
5.3.3.2. In the case of manual gearboxes it must be possible to lock the gearshift lever in reverse only; in addition locking in neutral shall be permitted.
5.3.3.3. In the case of automatic gearboxes provided with a "parking" position it must be possible to lock the mechanism in the parking position only; in addition locking in neutral and/or reverse shall be permitted.
5.3.3.4. In the case of automatic gearboxes not provided with a "parking" position it must be possible to lock the mechanism in the following positions only: neutral and/or reverse.
5.3.3.5. The device to prevent unauthorized use shall be so designed and constructed that it remains fully effective even after some degree of wear as a result of 2,500 locking cycles in each direction.
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