For materials in Hazard Class 8 (corrosive), a DOT placard is required if the gross weight is in excess of:

For materials in Hazard Class 8 (corrosive), a DOT placard is required if the gross weight is in excess of:

• A. 1000 lbs
• B. 500 lbs
• C. 2000 lbs
• D. 100 lbs

Answer: (A)

Placing warning signs on a vehicle is about signaling hazard quickly to people nearby and emergency responders. For corrosive materials (Hazard Class 8), the rule is that a DOT placard is required when the total weight of those materials on the vehicle exceeds 1,000 pounds. That means the smallest amount that triggers placarding is anything over 1,000 pounds; amounts at or below 1,000 pounds generally do not require a corrosive placard unless other specific rules apply. So the threshold value is 1,000 pounds. The other numbers don’t represent that cutoff: they’re either well below it (no placard needed) or simply reflect weights well above the threshold (which would require placards, but the key point is the regulatory threshold itself).

Placing warning signs on a vehicle is about signaling hazard quickly to people nearby and emergency responders. For corrosive materials (Hazard Class 8), the rule is that a DOT placard is required when the total weight of those materials on the vehicle exceeds 1,000 pounds. That means the smallest amount that triggers placarding is anything over 1,000 pounds; amounts at or below 1,000 pounds generally do not require a corrosive placard unless other specific rules apply. So the threshold value is 1,000 pounds. The other numbers don’t represent that cutoff: they’re either well below it (no placard needed) or simply reflect weights well above the threshold (which would require placards, but the key point is the regulatory threshold itself).