Route search device, control method, program and storage medium

Abstract

An enhanced map information processing unit 14 of a driving assistance device 1 acquires from a determination unit 13 information on surroundings of a vehicle which is needed to perform autonomous driving, and acquires from a server device 2 environment information on surroundings of a route on which autonomous driving is performed. On the basis of the acquired environment information, the enhanced map information processing unit 14 extracts, as an autonomous driving unsuitable location Pn, a location at which the accuracy of the acquirement of the sensor unit 12 is predicted not to satisfy a standard for acquiring the information on the surroundings of the vehicle needed to perform autonomous driving. An informing unit 18 alerts the extracted autonomous driving unsuitable location Pn to a user.

1 . A route search device comprising:
 an acquirement unit configured to acquire information on surroundings of a moving body;   a route search unit configured to search for or estimate a moving route usable by the moving body;
 and 
 an informing unit configured to provide information associated with a location on the moving route that was searched for or estimated by the route search unit and for which an accuracy of the acquirement does not to meet a standard. 
   
     
     
         2 . The route search device according to  claim 1 , further comprising
 an environment unit configured to acquire environment information on surroundings of the moving route searched for or estimated by the route search unit;   an extraction unit configured to extract, based on the environment information acquired by the environment unit, a location on which an accuracy of the acquirement by the acquirement unit is predicted not to meet a predetermined standard from the moving route searched for or estimated by the route search unit; and   an autonomous driving control unit configured to perform autonomous driving of a moving body based on the acquired information on the surroundings,   wherein the standard is a standard for determining whether the accuracy of the acquirement meets an accuracy required to perform the autonomous driving.   
     
     
         3 . The route search device according to  claim 2 ,
 wherein an alarm unit is configured to output a warning of an inability to continue to perform the autonomous driving shortly if the moving body is proximal to the location extracted by the extraction unit within a distance.   
     
     
         4 . The route search device according to  claim 2 ,
 wherein the informing unit is configured, when the autonomous driving is not turned off and an alert is issued to prompt an input for turning off the autonomous driving, to guide the moving body to a location where the moving body can stop before the moving body enters the location extracted by the extraction unit.   
     
     
         5 . The route search device according to  claim 4 , further comprising
 a safe location search unit configured to search for the location where the moving body is able to stop when the extraction unit extracts the location on which the accuracy of the acquirement is predicted not to meet the standard.   
     
     
         6 . The route search device according to  claim 2 ,
 wherein the route search unit is configured, where the location extracted by the extraction unit is included in the moving route, to search for another moving route which does not include the location extracted by the extraction unit.   
     
     
         7 . The route search device according to  claim 2 , further comprising
 a communication unit configured to communicate with a server device which receives and stores information generated by plural moving bodies based on output of sensors thereof,   wherein the environment acquirement unit is configured to acquire information from the server device as the environment information, the information being generated by a moving body passing through the moving route or a periphery thereof.   
     
     
         8 . The route search device according to  claim 7 ,
 wherein the route search device sends information on the location extracted by the extraction unit to the server device.   
     
     
         9 . A control method executed by a route search device, comprising:
 acquiring information on surroundings of a moving body;   searching for or estimating a moving route where the moving body moves; and   informing a user by providing information associated with a location on the moving route that was searched for or estimated and for which an accuracy of the acquirement does not to meet a standard.   
     
     
         10 . A non-transitory computer readable medium including instructions executed by a computer, the instructions comprising:
 acquiring information on surroundings of a moving body;   searching for or estimating a moving route where the moving body moves;   acquiring environment information on surroundings of the moving route searched for or estimated;   extracting, based on the environment information acquired, a location on which an accuracy of the acquirement is predicted not to meet a standard from the moving route searched for or estimated; and informing a user by providing information associated with a location on the moving route that was searched for or estimated and for which an accuracy of the acquirement does not to meet a standard.   
     
     
         11 . (canceled)