His grandfather was a track laborer, responsible for maintenance of the railway; his father began as a mechanic and eventually became an assistant driver.
祖父是森鐵的道班工，負責鐵道維修；父親從運轉整備和保養的機關車夫當到助理司機，翁幸昭自己則從學工、助理司機一路升到司機，駕輕就熟。