During a passenger bus pre-trip, what must be checked regarding the passenger seats?

PASSENGER SEAT INSPECTION: During the pre-trip, the driver must check that all passenger seats are: SECURELY FASTENED to the floor/frame of the bus (not loose, wobbly, or broken); not damaged in a way that could injure passengers; WHY: Loose or broken seats are dangerous — in a sudden stop or crash, a loose seat (and the passenger in it) can be thrown forward, causing injury; secure seats protect passengers; PASSENGER-SPECIFIC INSPECTION ITEMS (beyond standard CMV checks): Securely fastened seats; emergency exits (open from inside and out, signs lit); fire extinguisher and emergency equipment (present, charged, accessible); first aid kit; signaling devices (reflective triangles); no standing passengers forward of the standee line; aisles and exits clear; interior cleanliness and safety; the bus interior and passenger safety equipment are critical inspection items because the cargo is people; loose seats are a commonly tested item — they must be securely fastened for passenger safety; the driver must inspect the passenger compartment as carefully as the mechanical systems.