In the event of a sudden fire or smoke breakout on a moving passenger bus, what is the driver's mandatory sequence of immediate first actions?

1. Turn on hazard flashers, steer smoothly to the roadside/shoulder away from hazards, stop the vehicle, shut off the engine ignition, disconnect the master electrical power switch, open all doors, and direct passenger evacuation
2. Continue driving at high speed toward the nearest fire station 30 km away
3. Abandon the steering wheel immediately and jump out of the driver's window while the coach is still moving
4. Lock all doors to contain the smoke and instruct passengers to search for their baggage first