Washington will deny plates its DOL overseers deem inappropriate. They also have specific rules about numbers used as letters and vice versa. This was long before l33t speak. The simple purpose of that rule is so that if an eyewitness to a crime has to read a plate in a short glimpse they won’t get “fireman” from “f1reman”. It was nice to be able to still get the plate you want using the letter/number substitution, but in today’s world I can see their point on that one.
