What is the main reason a vehicle carrying a small, non-bulk quantity of a hazardous material might not need placards?

Pick an answer

1. Placarding is optional for every shipment regardless of size
2. Only shipments crossing international borders need placards
3. Small quantities are considered to carry less overall risk under the placarding thresholds
4. Placarding is optional for every shipment regardless of size, left up to the driver's discretion

Correct!

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