These days, tlie iiuiriber of vehicles is explosively iiicreasiiig a i d vehicles have the important roles in communities from the viewpoiiit of transportation. 111 this situation, tlie increase of traffic jam becomes one of serious social problems. It is said tliat tlie loss by the tra.ffic j a i r i iii Japan is more tliaii 7 billions yen.Tlic iiext gciieration vehicles is being proposed and uiider tlevclopiiig. 111 tlie iiear future, "driving autoiriaticallp" bccorrics coinin011 teclinologies iii usual life.To solve sucli problcnis as traffic jam aiid the first step of driviiig antoiriatically, "Platoon" is proposed. But the foriiiatiiig irietliotl of Platoon lias several problems. So we proposcd .'Platooii-Foririatioii Algoritliin( PFX)". 111 PFA, eacli platooii coiisiders vehicles' destiiiatioii when constructiiig aiid merging.