After a collision involving your loaded autobus, what is the passenger-priority sequence once the scene is reasonably controllable?

1. Photograph the other driver first, then ask passengers to stay seated indefinitely
2. Stop, secure the bus, protect the scene, check passengers, evacuate if remaining aboard is unsafe, and arrange first aid and emergency services
3. Leave passengers on the motorway carriageway immediately, even if the bus is intact and the tunnel is clear
4. Drive on to the next depot so the operator’s form can be completed