- 2023/08 - 2025/07 さいたまはーと推進協議会 会長
- 2024/03 - 2025/03 全国都市交通特性調査検討会 委員
- 2018/04 - 2022/03 Academic Committee, Japan Society of Traffic Engineers Member
- 2018/04 - 2022/03 Academic Sub-committee 2, Japan Society of Traffic Engineers Member and secretary
- 2018/09 - 2021/03 東京都市圏交通計画協議会 東京都市圏総合交通体系調査技術検討会 対流拠点WG 委員(副査)
- 2018/06 - 2020/03 Committee on Comprehensive Urban Transportation Planning, Oyama City (Tochigi Pref.) Vice-chair
- 2014/07 - 2018/03 Investigation Committee on Nationwide Person Trip Survey Member
- 2014/11 - 2017/11 Academic Sub-committee, Committee of Infrastructure Planning and Management, Japan Society of Civil Engineers Member
- 2013/05 - 2017/05 Editorial Committee, The City Planning Institute of Japan Member
- 2015/01 - 2016/04 Task Force for Revision of Organizational Rules, General Affairs Committee, The City Planning Institute of Japan Member
- 2014/04 - 2016/03 Academic Committee, Japan Society of Traffic Engineers Member
- 2012/07 - 2016/03 Research Committee for Extension of Odakyu Tama-Line Member
- 2000/07 - 2016/03 Enterprise Committee, Japan Society of Traffic Engineers Member
- 2010/06 - 2012/06 Committee of Infrastructure Planning and Management, Japan Society of Civil Engineers Member and secretary
- 2008/09 - 2011/03 Investigative Commission on Tokyo Metropolitan Region Person Trip Survey, Tokyo Metropolitan Region Transportation Planning Council Member
- 2008/04 - 2011/03 Academic Committee, The City Planning Institute of Japan Member
- 2008/04 - 2010/03 Annual Meeting Programming Committee, Japan Society of Civil Engineers Member
- 2008/08 - 2009/03 Committee on the Possibility of Introducing New Environmentally-friendly Transportation System, Hamamatsu City (Shizuoka Pref.) Member
- 2006/12 - 2008/05 General Affairs Committee, The City Planning Institute of Japan Member
- 2004/06 - 2008/05 Information Committee, The City Planning Institute of Japan Member
- 2005/09 - 2007/03 Committee on Ikebukuro Transportation Vision, Toshima Ward (Tokyo Met.) Vice-chair
- 2006/01 - 2006/12 Committee on Community Bus, Fuchu City (Tokyo Met.) Vice-chair
- 2005/07 - 2006/12 Expert Committee for Developing Comprehensive Transporation Plan, Aikawa Town (Kanagawa Pref.) Vice-chair
- 2005/08 - 2006/03 Adivisory Committee on Local Public Transportation, Kawasaki City (Kanagawa Pref.) Member
- 2005/04 - 2006/03 Goods Transportation Research Working Group, Tokyo Metropolitan Region Transportation Planning Council Member
- 2002/04 - 2006/03 Committee on Public Involvement for Road Space Reallocation in Sagamihara Section of National Road Route 16 Member
- 2004/03 - 2005/03 Committee for Developing Master Concept for Barrier-free Transportation, Hino City (Tokyo Met.) Member
- 2003/03 - 2004/03 八日町地下駐車場利用促進委員会 委員
- 2001/06 - 2004/03 Committee of Research for Introducing Community Bus, Fuchu City (Tokyo Met.) Vice-chair
- 2001/09 - 2002/08 Advisory Committee on Location of Large-scale Retail Facilities, Tokyo Metropolitan Government Member