Trolleybuses, which ran in London from 1931 to 1962, had 3-digit route numbers between 500 and 699, and these included some of the current route numbers used for school buses.
Trolleybuses, which ran in London from 1931 to 1962, had 3-digit route numbers between 500 and 699, and these included some of the current route numbers used for school buses.