The impact assessment, assuming a replacement of current time-based charging schemes by distance-based ones in PO2 to PO4 (the alternative for Member States being not to charge), clearly showed that PO4 was the most effective but would bring its benefits at the highest costs.
Iz ocene učinka, v kateri je v možnostih politike od 2 do 4 predvidena zamenjava sedanjih shem zaračunavanja časovno omejenih pristojbin s tistimi na podlagi prevožene razdalje (nadomestna možnost za države članice bi bila, da pristojbin ne zaračunavajo), je jasno razvidno, da je možnost politike 4 najučinkovitejša, vendar bi njene koristi prinesle tudi najvišje stroške.