New road detection logic

A road network analysis system, comprising:

• a probe vehicle configured to generate probe information with driving of the vehicle;
• and
• an analyzer configured to receive the probe information from the probe vehicle and analyze a road network, wherein
• the probe vehicle comprises a transmitter configured to refer to link-node information correlated to the road network and send information of a link and/or a node which the probe vehicle has passed as part of the probe information,
• the analyzer comprises:
• a probe information accumulator configured to receive the probe information sent from a plurality of the probe vehicles and accumulate the received probe information over a predetermined period;
• a traffic amount calculator configured to determine a traffic amount of vehicles passing through a specified section included in the road network from a plurality of the probe information accumulated over the predetermined period;
• a discontinuity rate calculator configured to determine a discontinuity rate, which is a rate of incidents that vehicle locations are discontinuous in the specified section, from the plurality of probe information accumulated over the predetermined period;
• and
• a detector configured to detect a change in the road network, based on a degree of change between traffic amounts in two different periods with respect to the specified section included in the road network and a degree of change between discontinuity rates in the two different periods.

A road network analysis method that analyzes a change in road network by using probe information generated with driving of a vehicle, the road network analysis method comprising:

• determining a traffic amount of vehicles passing through a specified section included in the road network from a plurality of the probe information accumulated over a predetermined period;
• determining a discontinuity rate, which is a rate of incidents that vehicle locations are discontinuous in the specified section, from the plurality of probe information accumulated over the predetermined period;
• and
• detecting a change in the road network, based on a degree of change between traffic amounts in two different periods with respect to the specified section included in the road network and a degree of change between discontinuity rates in the two different periods.

A program products having a computer readable medium and program stored therein, wherein the program is readable by a computer and causes the computer to perform a process of analyzing a change in road network by using probe information generated with driving of a vehicle,

• the program causing the computer to implement:
• a first function of determining a traffic amount of vehicles passing through a specified section included in the road network from a plurality of the probe information accumulated over a predetermined period;
• a second function of determining a discontinuity rate, which is a rate of incidents that vehicle locations are discontinuous in the specified section, from the plurality of probe information accumulated over the predetermined period;
• and
• a third function of detecting a change in the road network, based on a degree of change between traffic amounts in two different periods with respect to the specified section included in the road network and a degree of change between discontinuity rates in the two different periods.