Hazardous Materials and Special Tanker Rules
This domain tests the operating rules that ride along with a placarded tank: placarding thresholds, railroad crossings, parking and attendance, tunnel restrictions, and emergency response.
Placarding
- Table 1 materials require placards for any quantity.
- Table 2 materials require placards at 1,001 pounds or more aggregate gross weight.
- Placards go on both sides and both ends of the tank.
Railroad crossings
A vehicle carrying hazardous materials that requires placarding, and any tank vehicle carrying flammable liquid, must stop before the crossing, look and listen, and cross only when clear.
Parking, attendance, and tunnels
Do not park a placarded tank within the prohibited distance of an open flame, bridge, tunnel, or place of public assembly, and never leave it unattended. Placarded loads are barred from several New York City crossings, including the Holland and Lincoln tunnels and the Queens–Midtown, Brooklyn–Battery (Hugh L. Carey), and Queens–Whitestone facilities; read the signage and plan the legal route before you commit.
Worked example
A tank carries 1,200 pounds of a Table 2 material. Placards are required because the weight exceeds 1,001 pounds. If the same trailer carried 500 pounds of a Table 1 material, placards would still be required, because Table 1 has no weight threshold.
Traps that cost marks
Treating 1,000 pounds as the threshold. Assuming only the power unit needs placards. Rolling through a railroad crossing because the gate is up. Routing a placarded load through a restricted tunnel. Leaving a placarded tank unattended while you eat.