You are hauling 50 pounds of Division 2.3 poison gas, a Table 1 material. Do you need to placard the vehicle?

49 CFR 172.504 and Table 1; AAMVA CDL Manual Sec. 9.3.11, Fig. 9.7 (nhcdm.pdf p.9-8)

Mixing up Table 1's 'any amount' rule with Table 2's 1,001-pound threshold is one of the most common hazmat test errors. Getting it backwards in the real world means driving an unplacarded vehicle carrying one of the most dangerous categories of material on the road.