COUNCIL DIRECTIVE
of 21 December 1989
amending Directive  86/298/EEC on rear-mounted roll-over protection structures of
narrow-track wheeled agricultural and  forestry tractors
(89/682/EEC)
THE COUNCIL OF THE EUROPEAN COMMUNITIES
,
Having regard to the Treaty establishing the European Economic Community, and in particular Article  100a thereof,
Having regard to the proposal from the Commission (1),
In cooperation with the European Parliament (2),
Having regard to the opinion of the Economic and Social Committee (3),
Whereas it is necessary to adopt measures with the aim of progressively establishing the internal  market over a period expiring on 31 December 1992; whereas the internal market comprises an area  without internal frontiers in which the
free movement of goods, persons, services and capital is  ensured;
Whereas Article 13 of Directive 86/298/EEC (4) lays down that the provisions at present in force  shall be supplemented by provisions introducing additional impact tests into the dynamic test  procedure;
Whereas, since provision is already made for an additional test in the case of the static test  procedure, it is necessary also in that of the dynamic test procedure to provide for an additional  test which more accurately reflects the situation in the event of tractor roll-over in order that  these two test procedures may be rendered equivalent and the present imbalance between them  eliminated;
Whereas the purely theoretical parameters and calculations on which the additional dynamic impact  test was initially based have been the subject of practical experiments that leave no doubt as to  their reliability;
Whereas it is also necessary to amend the scope of Directive 86/298/EEC so as to clarify the  wording of the second indent of Article 1 concerning the tyres fitted to the front and rear axles,  and thus eliminate any possibility of differing interpretations,
OJ N° C 256, 9. 10. 1989, p. 77.
Directive 86/298/EEC is hereby amended as follows:
1.
the second indent of Article 1 is replaced by the following:
'- fixed or adjustable minimum track width of less than 1 150 mm for the axles fitted with the  widest tyres; since the axle fitted with the widest tyres is assumed to be adjusted to a maximum  track width of 1 150 mm, the other axle must be capable of being adjusted in such a way that the  outer edges of the narrowest tyres do not project beyond the outer edges of the tyres on the axle  with the widest tyres. Where both axles are equipped with wheels and tyres of the same size, the  fixed or adjustable track width of both axles must be less than 1 150 mm;'
2.
in Annex II, point 3.1.1 is replaced by the following:
'3.1.1.
After each partial test in the dynamic test procedure, it shall be free from tears or cracks as  described in point 3.1 of Annex III (A).
If, during the dynamic test, significant tears or cracks appear, an additional impact test or  crushing test as defined in point 1.6 of Annex III (A) must be performed immediately after the test  which caused these tears or cracks to appear.';
3.
in Annex III (A), point 1.6 is replaced by the following:
'1.6.
Additional tests
'1.6.1.
If cracks or tears which cannot be considered negligible appear during an impact test, a second,  similar test, but with a height of fall of:
Hm =  10  × 12 + 4a
Hm =
H
10
×
12 + 4a
1 + 2a
shall be performed immediately after the impact  test causing these tears or cracks to appear, ''a'' being the ratio of the permanent deformation
to  the elastic deformation (a = Dp/De) as measured at the point of impact.
The additional permanent deformation due to the second impact must not exceed 30 % of the permanent  deformation due to the first impact.
In order to be able to carry out the additional test, it is necessary to measure the elastic  deformation during all of the impact tests.
,1.6.2.
If, during a crushing test, significant tears or cracks appear, a second, similar crushing test,  but with a force equal to 1,2 Fv, shall be performed immediately after the crushing test which  caused these tears and cracks to appear.';
4.
in Annex VI, the following point is inserted:
'7.3.
Indication and results of any additional dynamic test.'
Member States shall bring into  force the laws, regulations and administrative provisions necessary to comply with this Directive  not later than 12 months from 3 January 1990. They shall forthwith inform the Commission thereof.
This Directive is addressed to the Member States.