Free driver tool

Type a UN number.
See the placard.

Proper shipping name, hazard class, packing group, placard, and 2024 ERG guide — straight from the official 49 CFR §172.101 table. Instant, free, no signup.

Reference only — not a compliance answer for your load. This lookup reads the regulation table for one UN number at a time. Real placarding under §172.504 depends on your whole load: weights add up across Table 2 classes, bulk changes everything, and exceptions apply. For the full check, scan your actual shipping paper — HaulGuard reads every line and hands your driver an inspection-ready record.
Try · · ·

The lookup is the easy part. The load is the hard part.

This page reads the regulation table. It can't read your paper — and the paper is what the inspector reads.

What you just got — free

  • The placard for one UN number
  • Class, packing group, subsidiary labels
  • ERG 2024 guide + isolation distance
  • The 1,001-lb answer, both cases

What a scan adds

  • Reads your actual BOL — catches a misprinted UN or PG this table can't see
  • Every line at once: combined Table 2 weight, DANGEROUS substitution
  • Segregation — what can't ride together
  • Driver-verified Evidence Packet an inspector can check by QR
Scan your paper — first scan free

Shippers & brokers: custom program pricing

What this lookup does

Every answer on this page comes from published federal data: the 49 CFR §172.101 Hazardous Materials Table (proper shipping names, hazard classes, packing groups, label codes, inhalation-hazard zones) and the PHMSA 2024 Emergency Response Guidebook UN→guide index. The placard names follow the §172.504 tables — Table 1 materials placard at any amount; Table 2 materials placard at 1,001 lbs aggregate gross weight or in bulk packaging. No AI is involved: it's the same deterministic placard logic HaulGuard's scan engine uses, applied to a single UN number.

Want the underlying data? The full HMT and the ERG lookup are free downloads (CC BY 4.0) on our free resources page.