Jeśli chodzi o kask ochronny, to znalazłam coś takiego jak:
'wear safety helmet',
'safety helmets must be worn'
a jeśli chodzi o pasy bezpieczeństwa to jest kilka wersji, m.in.:
''Seat belts must be worn',
'Wear seat belts',
'Fasten seat belt',
'Seat belts must be worn at all times'
'Buckle up. It's the law.'