1. Pursuing establishment of road maintenance cycle-Interim summary report by road maintenance technical subcommittee;Matsuda;Public Works Manag J,2013
2. Bicycle accidents and negligence of road installation administration;Kishi;North Intersect,2009
3. Road Traffic Management Section, Road Transport Bureau, MLIT Bicycle rider toppling accident caused by potholes on a road during road-race bike cruising in mountainous area 2013
4. Yorifuji M Tokida K Repairing damages due to major level differences caused by earthquake, and management and deployment of traffic opening 67 2007
5. Sasaki K Inoue U Tobe Y WINFO: A human-assisted sensor network 2005