About KUBOTA YASUSHI
About JR東海
About YAMASHITA TAKURO
About JR東海
About AOYAGI NAOYUKI
About 日本信号
About 電気学会全国大会講演論文集(CD-ROM)
About railway safety device
About railroad crossing
About control equipment
About railway facility
About standardization
About cost reduction
About service life
About 電子踏切
About Signal,safety
About 電子
About 踏切制御
About 開発