The 157 series fleet included a dedicated imperial train car, built in 1960 and numbered KuRo 157-1, which could be inserted into 157 series formations for use on imperial train workings.
The 157 series fleet included a dedicated imperial train car. A dedicated imperial train car was built in 1960. The 157 series fleet numbered KuRo 157-1, which could be inserted into 157 series formations for use on imperial train workings.