What 172.602(b) means in plain language
FMCSR 172.602(b) requires that emergency response information be provided in the correct form and manner. In practical terms, this means your hazardous materials shipment must include proper emergency contact and response guidance that is accessible and formatted according to federal standards.
When you transport hazmat, the shipper must provide you with emergency response information—typically in the form of a Safety Data Sheet (SDS) or emergency response guide entry. That information can't just be there; it has to be in the right format and readily available in your vehicle. The regulation ensures that if an emergency occurs, responders and you have clear, properly organized information about the hazardous materials on board.
A citation for 172.602(b) typically means an inspector found that your emergency response materials were missing, incomplete, improperly formatted, or not presented in the manner required by federal hazmat rules.
What our enforcement data actually shows
Across our database of 13 million+ roadside inspection records, 172.602(b) has generated 249 all-time citations. In the last 12 months, we recorded 0 citations for this code, and in the last 90 days, 0 citations. This code ranks #1157 out of 3,036 FMCSR codes by citation volume.
The most striking data point: 0.0% out-of-service rate. Every single one of the 249 citations—all 249—resulted in a non-out-of-service (non-OOS) violation. This is dramatically lower than the all-FMCSR average OOS rate of 31.4%. In other words, inspectors have never pulled a vehicle off the road solely for a 172.602(b) violation. This suggests the violation is treated as a recordable deficiency rather than an immediate safety emergency, though it still carries citation liability and may contribute to carrier safety scores.
Who gets cited most
Our inspection records do not break citations down by state in the data provided, so we cannot identify the top states by count. However, we can note the carriers with the highest citation counts. Our data shows fleets such as Greenwood Motor Lines Inc (USDOT 63391) with 6 citations and Estes Express Lines (USDOT 121018) with 5 citations for this violation. These carriers operate in the hazmat space, and their citation frequency reflects the volume of hazmat shipments they handle rather than a pattern of systemic non-compliance.
How severe is this compared to similar codes
Within the Hazardous Materials category, 172.602(b) sits at the milder end of enforcement. Consider the peer codes:
- 177.834A-HMC (General loading/unloading hazmat) has 3,954 citations with a 99.2% OOS rate—meaning nearly all citations result in the vehicle being placed out of service.
- 177.817(a) (Placarding violation) has 2,274 citations with a 75.1% OOS rate.
- 172.602(c)(1) (Maintenance/accessibility of Emergency Response information), a closely related code, has 1,464 citations with a 0.0% OOS rate, identical to 172.602(b).
The data indicates that emergency response information violations (172.602(b) and 172.602(c)(1)) are consistently handled as recordable but non-immediate-removal violations, whereas structural loading and placarding violations carry far higher OOS rates.
How to avoid it
Based on our enforcement data, here are concrete steps to stay compliant:
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Verify SDS/Emergency Response documentation before accepting the load. Before you hook up a hazmat trailer, confirm that the shipper has provided current Safety Data Sheets or emergency response information in the proper format. Don't assume it's correct because it's labeled "hazmat."
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Keep emergency response materials accessible and visible. Store SDS or emergency contact information where an inspector or emergency responder can locate it quickly—typically in the cab or on the outside of the vehicle in a marked compartment. It should not be buried in a sealed envelope or locked in a storage area.
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Check that formatting matches federal standards. Ensure the emergency response information is on an official form (SDS, DOT Emergency Response Guide entry, or shipper-provided equivalent) with legible header information, contact numbers, and hazard classification. Handwritten notes or informal documentation do not meet the requirement.
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Review the Emergency Response Information Guide (or equivalent) for the specific hazmat you're carrying. Know what it says about your load; an inspector may ask you to locate and explain the emergency response information on the spot.
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Inspect before departure and at rest stops. A few minutes pre-trip verifying that your emergency response documentation is present and legible costs nothing and prevents a citation.
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Maintain copies throughout the trip. If you receive emergency response information at the shipper, keep a copy in the vehicle and don't discard it until the load is delivered. Loss or degradation of that information mid-trip can result in a citation.