In particular, through-tickets should be considered whenever, according to the time schedules, known at the time of the purchase of the ticket, there is time for the passenger to transfer between one service to another.
Zlasti je treba razmisliti o izdaji enotnih vozovnic, kadar koli je glede na časovne razporede, znane ob nakupu vozovnice, dovolj časa, da potnik z ene prevozne storitve preide na drugo.