The guidepath includes: a magnet guide tape which carries S pole, and guides a carrier vehicle in a first direction by the S pole by being arranged on a floor so as to extend in the first direction; a magnet guide tape which carries S pole, and guides the carrier vehicle in a second direction by the S pole by being arranged on the floor so as to extend in a second direction which intersects the first direction; and a magnetic body tape which is arranged at a side of the magnet guide tape at a position above which a marker sensor passes upon the carrier vehicle being guided by the magnet guide tape, and suppresses N pole.