In what direction and to what safe distance should the driver guide passengers during a commercial coach fire evacuation on a highway?

1. Guide passengers to stand directly behind the burning rear engine to stay warm
2. Have passengers wait in the center of the active expressway travel lane
3. Instruct passengers to retrieve checked heavy luggage from the cargo bay first
4. Guide all passengers to evacuate UPWIND (上风向) or crosswind, over the roadside guardrail to a safe area at least 50 to 100 meters away from the coach