Just so you know, the reflective vests are not a regulation in Canada. They've been mandated by the airport authorities themselves. And I know a guy who was run over by a vehicle on the ramp at a large European airport who would disagree with the notion that they're not a good idea. He didn't have one on and it was a dark and rainy night when the vehicle struck him. The aircraft he was walking around (757) was untouched. He spent a few days in the hospital.