I puzzled over this motto on the bumper of a NYC Department of Buildings Prius as we crawled towards the Kosciuszko Bridge. "Build Safe I live safe"? Or maybe it was missing a pronoun (and a comma)? "You build safe, I live safe"? Then I realized what you probably already have: That's not an "I", it's a "|", i.e., a vertical slash. Nobody ever said the DOB wasn't subtle. Or maybe nobody ever said it was.