Hazmat Placarding Rules for Florida Trucking

A truck moving hazardous materials in Florida must display placards when the load contains any quantity of a Table 1 material, or 1,001 pounds or more aggregate gross weight of Table 2 materials. Placards go on all four sides of the vehicle, they must match the hazard class of what is actually loaded, and the driver must carry shipping papers that agree with them.

Those rules come from 49 CFR Part 172, Subpart F, and Florida adopts the federal standard for both interstate and intrastate carriage. Here is the practical version for South Florida operators.

Table 1 versus Table 2: the rule that matters most

Table 1 materials require placards at any quantity — even one package. Table 1 covers the highest-consequence classes:

• Class 1.1, 1.2 and 1.3 explosives
• Class 2.3 poison gas
• Class 4.3 dangerous when wet
• Class 5.2 organic peroxide, Type B, liquid or solid, temperature controlled
• Class 6.1 inhalation hazard, Zone A or B
• Class 7 Radioactive Yellow-III

Table 2 materials require placards only at 1,001 pounds or more aggregate gross weight of all Table 2 materials on the vehicle combined — Classes 1.4, 1.5, 1.6, 2.1, 2.2, 3, combustible liquid, 4.1, 4.2, 5.1, 5.2 (other), 6.1 (other), Class 8 and Class 9. Note that the threshold is aggregate: 600 pounds of flammable liquid plus 500 pounds of corrosive crosses the line even though neither alone would.

If you are new to the class system, start with our primer on the nine hazmat classes.

Where placards go, and what they must look like

• Four sides. Front, rear and both sides. The front placard may be on the tractor or the trailer.
• Readable from the direction it faces, at least 3 inches away from other markings, and not obscured by ladders, doors or tarps.
• Correct orientation — square-on-point, 10.8 inches on each side, with the specified color, symbol and class number.
• Durable. Weather-resistant enough to survive the trip; faded or peeling placards are a citable defect.

The DANGEROUS placard

When a vehicle carries 1,001 pounds or more of two or more Table 2 categories, a single DANGEROUS placard may replace the individual ones. The exception: if 2,205 pounds or more of one Table 2 category is loaded at a single facility, that category must be placarded specifically.

Subsidiary hazards and the specific exceptions

Some materials require a subsidiary placard in addition to the primary — a Class 8 corrosive that is also poisonous, for example. Separately, Class 1.4, 1.5 and 1.6 explosives, and certain Class 7 shipments, have their own rules that override the general Table 2 threshold. Do not generalize from one commodity to your whole book of business.

Documents that must travel with the placards

Placards without matching paperwork is a violation on its own. The driver must have shipping papers showing proper shipping name, hazard class, UN identification number, packing group and quantity, kept within immediate reach and visible when the driver is at the wheel. Emergency response information — an ERG or equivalent — must accompany the shipping papers.

Drivers hauling placarded loads need a hazmat endorsement on their CDL and a current TSA security threat assessment. If the load moves through a marine terminal, they will also need port credentials; see our guide to the TWIC card and PortMiami access.

Florida-specific routing considerations

Placarded loads face tunnel, bridge and route restrictions that vary by jurisdiction, and Miami-Dade has its own designated truck routes. Plan the route before dispatch rather than at the gate — our breakdown of Miami-Dade truck routes and parking rules covers the local constraints. Securement rules also apply on top of the hazmat rules; see flatbed cargo securement if the load is open-deck.

Common citations

1. Wrong placard for the material actually loaded after a partial delivery.
2. Placards left up on an empty trailer that has been cleaned and purged.
3. Missing front placard because the tractor was swapped mid-route.
4. Shipping papers that do not match the placards after a multi-stop load.
5. Illegible or damaged placards.

Frequently asked questions

How many pounds of hazmat require a placard?

For Table 2 materials, placards are required at 1,001 pounds or more aggregate gross weight of all Table 2 materials on the vehicle combined. Table 1 materials — including 1.1, 1.2 and 1.3 explosives, poison gas, dangerous-when-wet materials and Radioactive Yellow-III — require placards at any quantity.

Do I have to remove placards after the hazmat is delivered?

Yes. Placards must reflect what is actually on the vehicle. Once the hazardous material is unloaded and the packaging is removed, or the tank is emptied, cleaned and purged, the placards must come down or you risk a citation for placarding a vehicle that does not contain the material.

Can one DANGEROUS placard cover a mixed load?

Often, yes. When a vehicle carries 1,001 pounds or more of two or more Table 2 hazard categories, a single DANGEROUS placard may be used instead of individual placards. However, if 2,205 pounds or more of one category is loaded at a single facility, that category must be placarded specifically.

Need a hazmat-capable carrier in South Florida?

Go Freight runs hazmat-endorsed drivers and compliant warehousing from 3300 NW 110 St, Miami, FL 33167. Request a quote or call (786) 445-0150.