No Seat Belts: Averted, at least on craft which can jink enough – or crash gently enough not to be instantly lethal even with the seat belts – for inconvenient acceleration to be relevant. But yes, seat belts, shock frames, and more subtle arrangements involving miniaturized vector-control tractor-pressors abound.
This is a companion discussion topic for the original entry at https://eldraeverse.com/2015/04/16/trope-a-day-no-seat-belts