Doragon bôru: Gokû no kôtsû anzen (1988)

An educational film featuring characters from "Dragon Ball". Roshi and Krillin are on their way to Bulma's birthday party, and they see a boy run into the street, nearly getting run over. Launch, as a traffic officer, teaches him about traffic safety. Meanwhile, Goku, who is also on his way to Bulma's party, gets a traffic lesson of his own from Suno after running through traffic to see her.