Road surface evaluation apparatus

A road surface evaluation apparatus comprising

• a microprocessor configured to perform:
• acquiring driving information of a plurality of vehicles which are traveling, including acceleration information indicating accelerations of the plurality of vehicles, speed information indicating driving speeds of the plurality of vehicles, and position information of the plurality of vehicles;
• acquiring map information including information of a road on which the plurality of vehicles travel;
• deriving a road surface roughness value representing a roughness of a road surface on which the plurality of vehicles travel for each speed range based on the driving information of the plurality of vehicles;
• correcting, for each speed range, each road surface roughness value for each speed range, and combining the road surface roughness value corrected for each speed range to derive a corrected road surface roughness value;
• and
• an output unit configured to output the corrected road surface roughness value in association with the information of the road.