Why must a bus driver check the emergency exits during the pre-trip inspection?

EMERGENCY EXIT INSPECTION: The driver must verify all emergency exits during the pre-trip. CHECK: Each emergency exit (doors, windows, roof hatches) opens properly; emergency exit warning devices/buzzers work (alert the driver if an exit is opened); exit signs are present and illuminated; exits are NOT obstructed (by baggage, passengers, or anything blocking access or operation); doors open from both inside and outside as designed; WHY CRITICAL: In an emergency (fire, crash, submersion), passengers must be able to evacuate quickly through these exits; a stuck, blocked, or non-functional emergency exit can trap passengers — potentially fatal; PASSENGER-SPECIFIC: Emergency exits are a defining passenger-vehicle inspection item because evacuation capability is essential for passenger safety; ONGOING: Exits must remain unobstructed throughout the trip (manage baggage and passengers); DRIVER DUTY: Ensure every emergency exit is functional and clear before carrying passengers; brief passengers on exit locations when appropriate; checking emergency exits is a critical part of the passenger bus pre-trip — passenger lives depend on these exits working in an emergency, so the driver must verify them every trip.