A driver is transporting a shipment of hazardous materials that includes 900 pounds of Division 2.1 (Flammable Gas) and 150 pounds of Class 3 (Flammable Liquid). None of these materials are Table 1 materials. What placarding requirement applies to this vehicle?
- AThe vehicle does not require placards because no single material exceeds 1,001 pounds.
- BThe vehicle must be placarded with a 'FLAMMABLE' placard only.
- CThe vehicle must be placarded with a 'DANGEROUS' placard.
- DThe vehicle must be placarded with a 'FLAMMABLE GAS' placard and a 'FLAMMABLE' placard.
Show answer & explanationAnswer & explanation
Correct answer: B. The vehicle must be placarded with a 'FLAMMABLE' placard only.
When transporting 1,001 pounds or more of aggregate Table 2 hazardous materials, the vehicle must be placarded. Since the total weight is 1,050 pounds (900 + 150), placarding is required. For mixed Table 2 materials, if the total aggregate weight is 1,001 lbs or more, and no single material exceeds 1,001 lbs, a 'FLAMMABLE' placard is used if any Class 3 material is present, unless other specific placards are required for Table 1 materials which are not in this scenario.
Why the other options are wrong
- A. Incorrect. The aggregate weight of Table 2 materials (900 + 150 = 1,050 lbs) exceeds the 1,001-pound threshold, requiring placards.
- C. Incorrect. A 'DANGEROUS' placard is used when 1,001 pounds or more of two or more categories of Table 2 materials are transported, and no single material exceeds 1,001 pounds, and there is no Class 3 material, or if there is, it's not the primary hazard. Here, Class 3 is present.
- D. Incorrect. When the aggregate weight of Table 2 materials is 1,001 lbs or more, but no single material exceeds 1,001 lbs, a single 'FLAMMABLE' placard generally suffices if Class 3 is present, rather than separate placards for each class, unless a specific Table 1 material is involved.
Mixed Table 2 Placarding (Aggregate 1,001 lbs+)
If a vehicle transports 1,001 pounds or more of two or more different Table 2 hazardous materials, and no single material requires its specific placard due to exceeding 1,001 pounds, specific rules apply for which placard to use.
- Total aggregate weight of Table 2 materials must be 1,001 lbs or more.
- No single Table 2 material exceeds 1,001 lbs individually.
- If Class 3 (Flammable Liquid) is present, a 'FLAMMABLE' placard is often used for the whole load.
- If no Class 3 material, or if other specific conditions apply, a 'DANGEROUS' placard might be used.
Memory trick: Many small boxes, but total weight means ONE big warning.