What is the primary responsibility of a bus driver during an emergency evacuation of the vehicle following an accident?

1. Collect tickets and baggage receipts before letting anyone off
2. Stay calm, direct passengers out through the doors and emergency exits away from the danger, guide them to a safe assembly point and help the injured
3. Wait inside the bus with the passengers until the emergency services arrive
4. Get the passengers out and send them along the hard shoulder to the nearest emergency telephone