A little bit lax in the Automobile department for some reason but when or around a helicopter I strap in and helmet up EVERY TIME those rotors are turning. Kinda feel naked otherwise. I check every Pax belt as well before take-off and if it's a "toe-in" situation it's done with a verbal check as my eyes are kind of busy. If they don't do belt up after departing a/c, you can guarantee I'll remind them the next time they get in. Kinda like a DI...it's non-negotiable. Being a PIC has it's benefits at least in these regards. BELT UP and FLY SAFE all
BWB