The SFO Airtrain which connects you to BART has these poorly thought-out announcements:

The train is about to depart. Please hold on. Please set your luggage cart brake to “on”.

That seems fine when you read it, but imagine it as an announcement. The quotes just don’t come through. What’s wrong with like, “Please set your luggage cart brake”, or “Please engage your luggage cart brake”, or even “Please lock your luggage cart brake”.

Don’t you realize your announcement sounds stupid?