Police quest was just way too tough for the foreigner unused to American procedures. "Administer sobriety test" is not the easiest of commands without a very broad vocabulary.
I don't know. My friends and I growing up in Asia played Police Quest I as 8 year olds.
We learned about the Miranda rights, and the PR-24 nightstick. I remember the sobriety test part. We didn't know what a "field sobriety test" was exactly, but we knew it was something to do with drunk drivers. Somehow we managed to finish the game.
I think most people can pick up a lot of clues from context alone.
