When reporting a road hazardous goods transport accident to emergency services (119 Fire & Rescue, 122 Traffic Police, 110 Public Security, 120 Medical), which vital information must the driver or escort report first?

1. Accurate incident location (highway kilometer marker), 4-digit UN Number and Proper Shipping Name, Hazard Class, leak/fire status, casualty count, and prevailing wind direction
2. The wholesale market price of the chemical and the customer's delivery discount
3. The driver's personal monthly salary and insurance policy dividend numbers
4. The weather forecast for next week in a different province