Seat belt use* is the brown M&M of the US fire service community. If you don't see regular seat belt use in your local fire department, you should find out why. It typically means the company officers just aren't doing their job. If your department -
A. Wears seat belts; B. Chocks the wheels religiously; C. Checks if the door is locked before breach; D. Positions apparatus for, but does not initiate water supply properly at all credible alarms; they're going after some really pernicious problems, typically driven by sheer laziness, in the fire service.
*FFs, yes ice rescue, I know, edge case.