N.o 171 — 6 de Setembro de 2005 DIÁRIO DA REPÚBLICA — I SÉRIE-A 54194 — Article 7. — In what concerns quotas:a) Before November 30 of each calendar year thecompetent authorities of both Parties shallexchange authorization forms in a total numberaccording to the quota that has been established,on the basis of the principle of reciprocity, forthe following calendar year;b) 30 per cent of the quota may be used by hauliersestablished in any of the Parties to performeither bilateral, transit or triangular transports;c) Each yearly authorization will be equivalent to18 journey authorizations;d) In case of need, the annual quota may beincreased by common agreement between thecompetent authorities of the Parties.General provisions5 — Article 11. — The special authorization requiredunder paragraph 2 of article 11 shall be issued by:a) In the Portuguese Republic:Direcção-Geral de Viação, Ministério daAdministração Interna, Avenida daRepúblic...