LIST OF ANNEXES

make and type(s) of tractor(s) for which the protection structure is intended.

Every protection structure conforming to the approved type shall bear the following markings:

the position and critical dimensions of the seat in the protection structure and the relative positions of the protection structure and the tractor shall be such that the zone of clearance would have remained within the protection of the deflected structure throughout all tests.

any components such as mudguards and bonnet cowls which may provide support for the protection structure are identical,

the method of attachment and the tractor’s components to which the attachments are made are identical,

the mass of the unballasted tractor, as defined in point 1.3 of Annex II, does not exceed by more than 5 % the reference mass used in the test,

The holder of EC component type-approval may request its extension to other tractor types. The competent authority which has granted the original EC component type-approval shall grant the extension if the approved protection structure and the type(s) of tractor for which the extension is requested comply with the following conditions:

A tractor representative of the tractor type for which the protection structure to be approved is intended shall be submitted to the technical service responsible for conducting the component type-approval tests. This tractor shall be fitted with the protection structure.

brief description of the protection structure including type of construction, details of mounting on the tractor and, where necessary, details of cladding, means of access and escape, details of interior padding and features to prevent continuous rolling and details of heating and ventilation,

general arrangement drawing either to a scale marked on the drawing or giving the main dimensions of the protection structure. This drawing must in particular show details of the mounting components,

The application for EC component type-approval shall be accompanied by the undermentioned documents in triplicate and by the following particulars:

The application for EC component type-approval with regard to the strength of a protection structure and the strength of its attachment to a tractor shall be submitted by the tractor manufacturer or by the manufacturer of the protection structure or by their respective authorised representatives.

This condition is considered to be fulfilled if the requirements of Annexes II and III are complied with.

Every protection structure and its attachment to a tractor must be so designed and constructed as to fulfil the essential purpose laid down in point 1.

The structures mentioned in point 1.1 are characterised by the fact that during the tests prescribed in Annexes II and III they ensure an unobstructed space inside them large enough to protect the driver.

‘Roll-over protection structure’ (safety cab or frame), hereinafter called ‘protection structure’, means the structure on a tractor the essential purpose of which is to avoid or limit risks to the driver resulting from roll-over of the tractor during normal use.

energy input to be absorbed during application of the second longitudinal load (J).

deflection (mm) of structure at the point of and in line with the load application.

5.3. The report must identify clearly the tractor type (make, type and commercial description, etc.) used for testing and the types for which the protection structure is intended.

5.2. If EC component type-approval is being extended for other tractor types, the report must include the exact reference of the report of the original EC component type-approval as well as precise indications regarding the requirements laid down in point 3.4 of Annex I.

A statement of the type of windscreen and glazing fitted and of any EC or other approval marking incorporated.

Details of any special features such as devices to prevent the continuous rolling of the tractor.

A general description of the protection structure’s shape and construction (see Annex V for the obligatory dimensions), including the provisions for normal entry, exit and escape; the provisions for the heating and ventilation system, and other accessories where these are available and where they could affect the zone of clearance or might create a hazard.

5.1. The test report shall be attached to the EC component type-approval certificate referred to in Annex VII. The presentation of the report shall be as shown in Annex V. It shall include:

4.2. In addition there shall be no other feature presenting a particular hazard to the driver, for example insufficient padding inside the roof or anywhere else where the driver’s head may strike.

At the point when the required energy level is attained in each of the specified horizontal loading tests, the force shall exceed 0,8 Fmax.

During the tests the protection structure must not impose any constraint on the seat structure.

If an overload test has been carried out, the force applied when the specified energy is absorbed shall be greater than 0,8 of the maximum force occurring during both the main test and the overload test concerned (see figures 4b and 4c of Annex IV).

No part of the zone of clearance as described in point 3.2 of Annex III has been entered by, or has been outside the protection of, the protection structure during the tests specified in points 1.2, 1.3, 1.5, 1.6 and, where appropriate, point 1.7 of Annex III.

4.1. A protection structure submitted for EC component type-approval shall be considered as having satisfied the strength requirements if after the tests it fulfils the following conditions:

In the case of a tractor whose seat is not on the median plane of the tractor and/or non-symmetrical strength of the structure, the side loading shall be on the side most likely to lead to infringement of the zone of clearance during the tests (see also Annex III, point 1.3).

The protection structure shall be instrumented with the necessary equipment to obtain the data required to draw the force-deflection diagram (see figure 4 of Annex IV). Total and permanent protection structure deflection shall be measured and noted for each stage of the test (see figure 5 of Annex IV).

The protection structure to be tested need not be fitted with front, side or rear windows of safety glass or similar material, or with any detachable panels, fittings and accessories, which have no function of structural strength and which cannot create a hazard in the event of overturning.

All components of the tractor and protection structure which, as complete units, constitute protection for the driver — including weather protection — shall be supplied complete on a tractor for inspection.

The wheels shall be removed or set at a track width setting which ensures that no interference can occur with the protection structure during the tests.

3.1.1.3. No repairs or adjustments to the tractor or protection structure may be carried out during the tests.

3.1.1.2. If, during the test, any part of the restraining equipment breaks or moves, the test shall be re-started.

A second longitudinal loading shall be applied to tractors fitted with a protection structure designed to be tilted when the direction of application of the longitudinal loading (see point 3.1.1.1.1) would not have tilted the protection structure.

The second crushing test shall be applied at the opposite end of the protection structure to the longitudinal loading, i.e.:

The first crushing test shall be applied at the same end of the protection structure as the longitudinal loading, i.e.:

For tractors with at least 50 % of the mass as defined in point 1.3 on the rear wheels the longitudinal loading shall be applied from the rear (case 1). For other tractors the longitudinal loading shall be applied from the front (case 2).

3.1.1.1. The sequence of tests shall be as follows:

during test, under load: 10° above and 20° below the horizontal. These variations shall as far as possible be kept to a minimum.

2.2.4. Means for proving that the zone of clearance has not been entered during the test. A rig according to figures 6a, 6b and 6c of Annex IV can be used.

2.2.2. Means for applying a vertical force on the protection structure, such as shown in figure 3 of Annex IV, including a stiff crushing beam with a width of 250 mm.

2.2.1. Material, equipment and tie-down means adequate to ensure that the tractor is firmly fixed to the bedplate, independently of tyres.

2.1.4. Means for proving that the zone of clearance has not been entered during the test. A rig according to figures 6a, 6b and 6c of Annex IV can be used.

2.1.3. Equipment for measuring as far as is technically possible the energy absorbed by the protection structure and the rigid parts of the tractor to which it is attached, for example by measuring the force applied along its direction of application and the corresponding deflection relative to a point on the tractor chassis.

2.1.2.5. Where the horizontal length of the protection structure to which the load is to be applied does not constitute a straight line normal to the direction of application of the load, the space shall be packed so as to distribute the load over this length.

2.1.2.4. Universal joints — or the equivalent — shall be incorporated to ensure that the loading device does not constrain the structure in rotation or translation in any direction other than the direction of loading.

2.1.2.3. The edges of the beam in contact with the protection structure shall be curved with a maximum radius of 50 mm.

2.1.2.2. Provision must be made so that the load can be uniformly distributed normal to the direction of loading and along a beam having a length of one of the exact multiples of 50 between 250 and 700 mm.

2.1.2. Means of applying a horizontal force on the protection structure by a stiff beam as shown in figures 1 and 2 of Annex IV.

2.1.1. Material, equipment and tie-down means adequate to ensure that the assembly is firmly fixed to the bedplate, independently of tyres if present.

The reference mass mt, used in the formulae (see Annex III) to calculate the energies and the crushing force, shall be at least that defined in point 2.1.1 of Annex I to Directive 2003/37/EC (i.e. excluding optional accessories but including coolant, oils, fuel, tools and driver) plus the protection structure and less 75 kg.

All components that the driver could himself remove shall be removed for the tests. If it is possible to keep the doors and windows open or to remove them when the tractor is in use, they must be kept open or removed during the tests, so as not to increase the strength of the roll-over protection structure. If, in this position, they constitute a danger for the driver should the tractor roll over, the test report must refer to this fact.

Components which may create a hazard in the zone of clearance must also be fitted so that they may be examined to see whether the requirements of point 4 have been fulfilled.

1.2.4. For the tests the tractor must be fitted with all structural components of the series production which may influence the strength of the protection structure or which may be necessary for the strength test.

1.2.3.1. To comply with the requirements of point 1.2.3, the modification shall lock any tractor ride suspension system so as to ensure that it does not absorb any of the test energy.

1.2.3. The assembly must be supported and secured or modified so that all the test energy is absorbed by the protection structure and its attachment to the rigid components of the tractor.

1.2.2. The assembly shall be secured to the bedplate so that the members connecting the assembly and the bedplate do not deflect significantly in relation to the protection structure under loading. The method of attachment of the assembly to the bedplate must not of itself modify the strength of the assembly.

1.2.1. The protection structure must conform to the series production specifications. It shall be attached in accordance with the manufacturer’s declared method of attachment to one of the tractors for which it is designed. A complete tractor is not required for the test; however, the protection structure and parts of the tractor on which it is attached for the tests shall represent an operating installation, hereinafter referred to as ‘the assembly’.

Tests made using special rigs are intended to simulate such loads as are imposed on a protection structure, when the tractor overturns. These tests, described in Annex III, enable observations to be made on the strength of the protection structure and any brackets attaching it to the tractor and any parts of the tractor which transmit the test force.

Conditions for testing the strength of the protection structures and of their attachment to tractors

ANNEX III

TEST PROCEDURE

1. HORIZONTAL LOADING AND CRUSHING TESTS

1.1. General provisions for horizontal loading tests

1.1.1. The loads applied to the protection structure shall be distributed by means of a stiff beam, complying with the specifications laid down in point 2.1.2 of Annex II, located normal to the direction of load application; the stiff beam may be equipped with a means of preventing its being displaced sideways. The rate of deflection under loading shall not be greater than 5 mm/s. As the load is applied, the values F and D shall be recorded simultaneously at deflection increments of 15 mm or less, to ensure accuracy. Once the initial application has commenced, the load shall not be reduced until the test has been completed; but it is permitted to cease increasing the load if desired, for example to record measurements.

1.1.2. If the structural member to which the load is to be applied is curved, the specifications laid down in point 2.1.2.5 of Annex II must be complied with. The application of a load must, however, comply with the requirements of point 1.1.1 above and point 2.1.2 of Annex II.

1.1.3. If no structural cross member exists at the point of application, a substitute test beam which does not add strength to the structure may be utilised for the test procedure.

1.1.4. The structure shall be inspected visually when the load is removed after each loading test has been completed. If cracks or tears have occurred during loading, the overload test specified in point 1.4 below shall be carried out before proceeding to the next loading in the sequence given in point 3.1.1.1 of Annex II.

1.2. Longitudinal loading (see figure 2 of Annex IV)

Load application shall be horizontal and parallel to the vertical median plane of the tractor.

For tractors with at least 50 % of their mass, as defined in point 1.3 of Annex II, on the rear wheels, the longitudinal rear load and the lateral load shall be applied on different sides of the median longitudinal plane of the protection structure. For tractors with at least 50 % of their mass on the front wheels, the longitudinal front load shall be on the same side of the median longitudinal plane of the protection structure as the lateral load.

It shall be applied to the uppermost transverse structural member of the protection structure (i.e. the part which would be likely to strike the ground first in an overturning incident).

The point of application of the load shall be located one-sixth of the width of the top of the protection structure inwards from the outside corner. The width of the protection structure shall be taken as the distance between two lines parallel to the vertical median plane of the tractor touching the outside extremities of the protection structure in the horizontal plane touching the top of the uppermost transverse structural members.

The length of the beam shall be not less than one-third of the width of the protection structure (as previously described) and not more than 49 mm greater than this minimum.

The longitudinal loading is applied from the rear or front, as defined in point 3.1.1.1 of Annex II.

The test shall be stopped whenever:

(a) the strain energy absorbed by the protection structure is equal to or greater than the required energy input Eil 1 (where Eil 1 = 1,4 mt);

(b) the structure infringes the zone of clearance or leaves the zone of clearance unprotected.

1.3. Loading from the side (see figure 1 of Annex IV)

The loading shall be applied horizontally at 90° to the vertical median plane of the tractor. It shall be applied to the upper extremity of the protection structure at a point 300 mm forward of the seat reference point with the seat in its rearmost position (see point 2.3.1). If the protection structure has any projection on the side which would be certain to contact the ground first during a sideways overturn, the loading shall be applied at that point. In the case of a tractor with a reversible position, the load shall be applied to the upper extremity of the roll-over protection structure half-way between the two seat reference points.

The beam shall be as long as practicable, but no more than 700 mm in length.

The test shall be stopped whenever:

(a) the strain energy absorbed by the protection structure is equal to or greater than the required energy input Eis (where Eis = 1,75 mt); or

(b) the structure infringes the zone of clearance or leaves the zone of clearance unprotected.

1.4. Overload test (see figures 4a, 4b and 4c in Annex IV)

1.4.1. The overload test must be carried out if the force decreases by more than 3 % during the last 5 % of the deflection achieved, where the energy required is absorbed by the structure (see figure 4b).

1.4.2. The overload test involves the gradual increase of the horizontal load by increments of 5 % of the initial energy requirement up to a maximum of 20 % of energy added (see figure 4c).

1.4.2.1. The overload test is satisfactory if, after each increase by 5 %, 10 % or 15 % in the energy required, the force decreases by less than 3 % for a 5 % increment and remains more than 0,8 Fmax.

1.4.2.2. The overload test is satisfactory if, after the structure has absorbed 20 % of the added energy, the force exceeds 0,8 Fmax.

1.4.2.3. Additional cracks or tears and/or entry into or lack of protection of the zone of clearance due to elastic deformation are permitted during the overload test. However, after the removal of the load, the structure shall not enter the zone of clearance, which shall be completely protected.

1.5. Crushing at the rear

The beam shall be positioned over the rear uppermost structural members and the resultant of crushing forces shall be located in the vertical longitudinal reference plane. A force Fr = 20 mt shall be applied.

Where the rear part of the protection structure roof will not sustain the full crushing force, the force shall be applied until the roof is deflected to coincide with the plane joining the upper part of the protection structure with that part of the rear of the tractor capable of supporting the vehicle’s mass when overturned. The force shall then be removed, and the tractor or loading force repositioned so that the beam is over that point of the protection structure which would then support the tractor when completely overturned. The force Fr shall then be applied.

The force Fr shall be applied for a minimum of five seconds following the cessation of the visually detectable deflection.

The test shall be stopped if the structure infringes the zone of clearance or leaves the zone of clearance unprotected.

1.6. Crushing at the front

The beam shall be positioned across the front uppermost structural members and the resultant of crushing forces shall be located in the vertical longitudinal reference plane. A force Ff = 20 mt shall be applied.

Where the front part of the protection structure roof will not sustain the full crushing force, the force shall be applied until the roof is deflected to coincide with the plane joining the upper part of the protection structure with that part of the front of the tractor capable of supporting the vehicle’s mass when overturned. The force shall then be removed, and the tractor or loading force repositioned so that the beam is over that point of the protection structure which would then support the tractor when completely overturned. The force Ff shall then be applied.

The force Ff shall be applied for a minimum of five seconds following the cessation of the visually detectable deflection.

The test shall be stopped if the structure infringes the zone of clearance or leaves the zone of clearance unprotected.

1.7. Second longitudinal loading

Load application shall be horizontal parallel to the vertical median plane of the tractor.

The second longitudinal loading is applied from the rear or front as defined in point 3.1.1.1 of Annex II.

It shall be applied in the opposite direction to and at the corner furthest from the longitudinal loading in point 1.2.

It shall be applied to the uppermost transverse structural member of the protection structure (i.e. that part which would be likely to strike the ground in an overturning incident).

The point of application of the load shall be located one sixth of the width of the top of the protection structure inwards from the outside corner. The width of the protection structure shall be taken as the distance between two lines parallel to the vertical median plane of the tractor touching the outside extremities of the protection structure in the horizontal plane touching the top of the uppermost transverse structural members.

The length of the beam shall be not less than one third of the width of the protection structure (as previously described) and not more than 49 mm more than this minimum.

The test shall be stopped whenever:

(a) the strain energy absorbed by the structure is equal to or greater than the required energy input Eil 2 (where Eil 2 = 0,35 mt); or

(b) the structure infringes the zone of clearance or leaves the zone of clearance unprotected.

2. ZONE OF CLEARANCE

2.1. The zone of clearance is illustrated in figure 6 of Annex IV and is defined in relation to a vertical reference plane generally longitudinal to the tractor and passing through a seat reference point, described in point 2.3, and the centre of the steering wheel. The reference plane shall be assumed to move horizontally with the seat and steering wheel during application of the load but to remain perpendicular to the floor of the tractor or of the protection structure if this is resiliently mounted.

Where the steering wheel is adjustable, its position shall be that for normal seated driving.

2.2. The boundaries of the zone shall be taken as:

2.2.1. vertical planes 250 mm on either side of the reference plane extending upwards from the seat reference point for 300 mm;

2.2.2. parallel planes extending from the upper edge of the planes referred to in point 2.2.1 to a maximum height of 900 mm above the seat reference point and inclined in such a way that the upper edge of the plane on the side from which the side loading is applied is at least 100 mm from the reference plane;

2.2.3. a horizontal plane 900 mm above the seat reference point;

2.2.4. an inclined plane perpendicular to the reference plane and including a point 900 mm directly above the seat reference point and the rearmost point of the seat backrest;

2.2.5. a surface, if necessary curved, with a series of straight lines perpendicular to the reference plane extending downwards from the rearmost point of the seat in contact with the seat backrest throughout its length;

2.2.6. a curvilinear surface, perpendicular to the reference plane, with a radius of 120 mm tangential to planes referred to in points 2.2.3 and 2.2.4;

2.2.7. a curvilinear surface, perpendicular to the reference plane, having a radius of 900 mm extending forward for 400 mm from and tangential to the plane referred to in point 2.2.3 at a point 150 mm forward of the seat reference point;

2.2.8. an inclined plane perpendicular to the reference plane, joining surface referred to in point 2.2.7 at its forward edge and passing 40 mm from the steering wheel. In the case of a high steering wheel position this plane is replaced by a tangent plane to the surface referred to in point 2.2.7;

2.2.9. a vertical plane, perpendicular to the reference plane, 40 mm forward of the steering wheel;

2.2.10. a horizontal plane through the seat reference point;

2.2.11. in the case of a tractor with a reversible driving position, the clearance shall be a combination of the two clearances determined for the two positions of the steering wheel and seat;

2.2.12. in the case of a tractor which can be fitted with optional seats, the tests shall be based on the combined seat-reference-point clearance for all available seat options. The roll-over protection structure must not enter the combined clearance around the various seat reference points;

2.2.13. where a new seat option is proposed after the test has taken place, a calculation shall be made to determine whether the clearance around the new seat reference point is located entirely within the clearance previously established. If this is not the case, a new test shall be required.

2.3. Seat location and seat reference point

2.3.1. For the purpose of defining the zone of clearance in point 2.1 the seat shall be at the rearmost point of any horizontal adjustment range. It shall be set at the highest point of the vertical adjustment range where this is independent of adjustment of its horizontal position.

The reference point shall be established using the apparatus illustrated in figures 7 and 8 of Annex IV to simulate loading by a human occupant. The apparatus shall consist of a seat pan board and backrest boards. The lower backrest board shall be jointed in the region of the ischium humps (A) and loin (B), the joint (B) being adjustable in height.

2.3.2. The reference point is defined as the point in the median longitudinal plane of the seat where the tangential plane of the lower backrest and a horizontal plane intersect. This horizontal plane cuts the lower surface of the seat pan board 150 mm in front of the abovementioned tangent.

2.3.3. Where a seat incorporates a free sprung suspension travel, whether or not this can be adjusted for the weight of the driver, the seat shall be set at the mid-point of this travel.

The apparatus shall be positioned on the seat. It shall then be loaded with a force of 550 N at a point 50 mm in front of joint (A), and the two parts of the backrest board shall be lightly pressed tangentially against the backrest.

2.3.4. If it is not possible to determine definite tangents to each area of the backrest (below and above lumbar region) the following shall be done:

2.3.4.1. where no definite tangent to the lower area is possible, the lower part of the backrest board is pressed against the backrest vertically;

2.3.4.2. where no definite tangent to the upper area is possible, the joint (B) is fixed at a height which is 230 mm above the seat reference point, if the lower part of the backrest board is vertical. Then the two parts of the backrest board are lightly pressed against the backrest.

3. CONTROLS AND MEASUREMENTS TO BE MADE

3.1. Zone of clearance

During each test the protection structure shall be examined to see whether any part of the protection structure has entered a zone of clearance round the driving seat as defined in point 2.1. In addition, the protection structure shall be examined to determine whether any part of the zone of clearance is outside the protection of the protection structure. For this purpose, it shall be considered to be outside the protection of the protection structure if any part of it would have come into contact with flat ground if the tractor had overturned towards the direction from which the loading was applied. For this purpose, the tyre and track setting shall be assumed to be the smallest specified by the manufacturer.

3.2. Final permanent deflection

After the tests, the final permanent deflection of the protection structure shall be recorded. For this purpose, before the start of the test, the position of the main protection structure members in relation to the seat reference point shall be recorded.