最さい徐じょ行こう

noun, noun or participle which takes 'suru', intransitive verb

going at a very slow speed; crawling along

Used especially in traffic or driving contexts to describe moving at the slowest possible speed, slower than ordinary 徐行. Often used as a noun or with する.

See also: 徐行

• 工こう事じ区く間かんでは最さい徐じょ行こうしてください。

  Please go at a very slow speed in the construction zone.

• 車くるまが最さい徐じょ行こうで進すすんでいる。

  The car is moving at a crawling speed.