Patent ID: 11862014
Assignee: AICHI STEEL CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC G  E | IPC G

Claim 16:
17. A magnetic marker system including a plurality of magnetic markers laid in or on a traveling road so as to be detectable by a magnetic detecting part attached to a vehicle, the system comprising:
vehicles each of which outputs, when detecting a magnetic marker of the plurality of magnetic markers, detection information including marker identifying information configured to uniquely identifying the magnetic marker; and
a server apparatus which acquires the detection information outputted from each of the vehicles, wherein
the server apparatus includes a state estimating part which estimates a state of the magnetic marker based on a plurality of the detection information regarding the magnetic marker, and wherein the server apparatus includes a determining part which determines, of two pieces of detection information chronologically previously and subsequently acquired from any one vehicle, after one chronologically-preceding piece of detection information is outputted and until another piece of detection information is outputted, whether a magnetic marker not detected by the any one vehicle is present.