2022/commendationTohoku Expressway ‖ Sendai area reverse direction driving prevention sign construction 25/7/2022 by 信号器材株式会社
2022/commendationNagoya 2nd Ring Expressway ‖ Nagoya Nishi JCT-Tobishima JCT sign construction 16/6/2022 by 信号器材株式会社
2022/commendationMaintenance and repair work in the Hachioji area ‖ Chuo Expressway 7/6/2022 by 信号器材株式会社
