I do not remember the meaning of this sign, but it seems something emergency.
このサインの意味は何なんだろう?なんか緊急事態っぽいんだが。
通票閉塞機。我々はその音から「チンチンボンボン」と呼んでいました。
Tablet instrument.
I thought there were no freight handling in Masaki and Okoba, but it would be wrong. This picture clearly shows a freight car handling in a mixed train.