If a hazmat leak is discovered while the vehicle is moving, what should the driver do first?

HAZMAT LEAK RESPONSE requires prioritizing public safety and personal safety in sequence. IMMEDIATE ACTIONS: (1) GET OFF THE ROAD SAFELY: Pull to a safe location away from buildings, people, and sources of ignition (open flames, sparks, electrical equipment). Ideal: an open area well away from population. Do not drive further than necessary to reach safety; (2) STAY UPWIND: Position yourself upwind and uphill of the spill; many hazardous vapors are heavier than air and flow downhill; (3) CALL FOR HELP: Call 911 (or local emergency number); call the shipper's emergency contact (required on shipping papers and on the hazmat placard — a 24-hour number); call CHEMTREC (1-800-424-9300) if needed for expert technical guidance; (4) PREVENT BYSTANDER APPROACH: Keep people away from the vehicle — DO NOT let curious onlookers approach; hazmat leaks can be toxic by inhalation, contact, or ingestion; (5) DO NOT TOUCH LEAKING MATERIAL: Without proper PPE (which drivers typically don't carry), direct contact with many hazardous materials is extremely dangerous; do not attempt to plug, seal, or wipe up a leak; (6) PROVIDE INFORMATION TO RESPONDERS: Have your shipping papers ready; give responders the UN number, hazard class, quantity, and any emergency contact information. NEVER: Attempt to restart driving with a known active leak; let the leak go into storm drains or waterways; handle the substance without training and equipment.