Security awareness and safe driving practices for hazardous materials
Why it matters
Hazmat loads are targets - for theft of fuel and ammonia, for misuse of explosives precursors, and for casual tampering. Federal security requirements in 49 CFR Part 172 Subpart I direct carriers to train drivers in security awareness; certain large-quantity operations also need a written security plan.
Driver practices
- Verify the identity of the person releasing the freight and confirm the paperwork matches the packages.
- Do not leave the vehicle unlocked or running, and never leave keys in the ignition.
- Do not discuss contents, route, or destination with strangers, on the phone, or online.
- Park in well-lit, fenced, or patrolled lots; avoid isolated pull-offs; use a designated safe haven for overnight stops.
- Vary route and timing where practical, and know your alternate routes.
- Check seals and dome lids after every stop. A broken seal or loosened valve is a tampering report, not a maintenance note.
- Report surveillance, probing questions about your load, or attempts to move you off route to the carrier and to law enforcement.
Safe driving
A hazmat load is heavier, taller, and less forgiving. Reduce speed, brake earlier, and anticipate liquid surge in a cargo tank. Avoid populated areas and tunnels where routing allows, obey hazmat routing signs, and check brakes, tires, and couplings before departure - a tire fire beside a flammable liquid tank is a hazmat incident you caused.
Worked example
You return to a parked anhydrous ammonia nurse tank and find the valve cap off and the seal missing. Do not touch the valve or start the engine. Move upwind and away, call 911 and the carrier, and describe exactly what you found.
Traps that cost marks
Leaving a placarded vehicle unattended in a public lot "for just a minute"; assuming a locked cab secures the cargo; ignoring a small seal discrepancy.