på grundlag af en cost/benefit-analyse og senest den 31. december 2010, en forkortelse af den i artikel 13, stk. 11, omhandlede periode, eventuelt differentieret efter dækklasse eller -kategori.
by 31 December 2010, and on the basis of a cost/benefit analysis, measures shortening the period laid down in Article 13(11), which may be differentiated according to the class or category of tyres concerned.