For a non-waste hazardous-material shipment, how long must a receiving motor carrier retain the required shipping-paper copy?
Correct answer: One year after the carrier accepts the material.
The receiving motor carrier keeps the required non-waste shipping-paper copy for one year after acceptance. Its hazardous-waste shipping papers have a separate three-year period under 177.817(f).
Source: 49 CFR 177.817(f); current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
What does a material's hazard class communicate?
Correct answer: The kind of transportation hazard assigned to the material.
Hazard classes organize materials by their transportation hazards. They are not cargo-value or driver-experience ratings.
Source: South Carolina Commercial Driver License Manual, body March 2025; 9.8, Hazard Class definition, printed 9-19; physical PDF page 135; reviewed September 21, 2026. ↗
Which Hazardous Materials Table column supplies the identification number used in the basic shipping description?
Correct answer: Column 4, which supplies the identification number.
The shipping-description rule directs the identification number to Column 4 of the Hazardous Materials Table. That number does not replace the other required basic-description elements.
Source: 49 CFR 172.202(a)(1); current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
Which Hazardous Materials Table column gives the proper shipping name?
Correct answer: Column 2.
The shipping-description rule requires the proper shipping name prescribed in Column 2 of the Hazardous Materials Table. The identification number and hazard class come from different columns.
Source: 49 CFR 172.202(a)(2); current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
Where does the Hazardous Materials Table identify required hazard labels?
Correct answer: Column 6.
Column 6 identifies hazard labels for the table entry. Drivers must also follow any other labeling requirements applicable to the shipment.
Source: South Carolina Commercial Driver License Manual, body March 2025; 9.3.3, Hazardous Materials Table Column 6, printed 9-5; physical PDF page 121; reviewed September 21, 2026. ↗
Absent an applicable exception, where must required placards be displayed on a transport vehicle containing hazardous materials?
Correct answer: On each side and each end.
The general rule specifies each side and each end, with the placards appropriate to the material. Other provisions contain visibility, combination-vehicle and packaging exceptions.
Source: 49 CFR 172.504(a); current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
A highway shipment contains 200 pounds of Division 4.3 material with no applicable exception. Does being below 1,001 pounds remove its placarding requirement?
Correct answer: No; Division 4.3 is in Table 1.
Division 4.3 is a Table 1 hazard. The general less-than-1,001-pound exception for certain Table 2 non-bulk loads does not apply.
Source: 49 CFR 172.504(a), (c), (e) Table 1; current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
A truck carries 900 pounds aggregate gross weight of ordinary Class 3 material in non-bulk packages. No subsidiary-hazard or other special requirement applies. What does 172.504(c) permit?
Correct answer: Transport without a placard under the stated weight exception.
The exception is for less than 1,001 pounds aggregate gross weight of Table 2 hazardous material in the stated circumstances. It does not erase other hazardous-material requirements.
Source: 49 CFR 172.504(c); current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
When applying the Table 2 aggregate gross-weight placarding threshold, does packaging weight count?
Correct answer: Yes; gross weight includes packaging and contents.
The threshold uses the gross weight of the hazardous packages, not merely net product weight or the vehicle's own weight.
Source: South Carolina Commercial Driver License Manual, body March 2025; 9.3.11, placard tables and total weight including packaging, printed 9-9; physical PDF page 125; reviewed September 21, 2026. ↗
Can a bulk package rely on the general less-than-1,001-pound Table 2 placarding exception merely because it contains little material?
Correct answer: No; that exception expressly excludes bulk packagings.
Bulk-packaging and special subsidiary-hazard rules must be checked separately. The non-bulk aggregate-weight exception is not a general small-residue exemption for tanks.
Source: 49 CFR 172.504(c), (d); current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
A vehicle carries qualifying non-bulk packages from two Table 2 categories requiring different placards. Neither category reaches 2,205 pounds loaded at one facility. Which option may be available?
Correct answer: A DANGEROUS placard instead of their separate Table 2 placards.
172.504(b) allows the DANGEROUS option for the stated mixed non-bulk Table 2 load. It does not replace Table 1 or other separate requirements.
Source: 49 CFR 172.504(b); current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
A qualifying mixed non-bulk load uses DANGEROUS placards. One facility loads 2,300 pounds aggregate gross weight of Class 8 material. What additional category display is required?
Correct answer: The CORROSIVE placard for that category.
When at least 2,205 pounds of one Table 2 category is loaded at one facility, its specified category placard must be applied.
Source: 49 CFR 172.504(b); current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
For a domestic Class 9 shipment in bulk packaging, what is true even though a CLASS 9 placard is not required?
Correct answer: The bulk packaging still needs the appropriate identification-number marking.
The domestic placard exception does not remove bulk identification marking. The number can appear on the authorized Class 9 placard, orange panel or white square-on-point display.
Source: 49 CFR 172.504(f)(9); current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
For a tractor and cargo body, may the required front placard be displayed on the front of the truck-tractor?
Correct answer: Yes; it may be there instead of or in addition to the cargo-body front.
The rule expressly allows the required front display on the tractor. Other applicable placarding and visibility requirements remain.
Source: South Carolina Commercial Driver License Manual, body March 2025; 9.3.10, front placard placement on a truck-tractor, printed 9-9; physical PDF page 125; reviewed September 21, 2026. ↗
Hazardous-material packages are not permanently attached to the vehicle. What must their securement prevent during normal transportation?
Correct answer: Shifting, including movement relative to other packages.
Packages must be secured against normal transit movement. Loading must also minimize the chance of damage to valves and fittings.
Source: 49 CFR 177.834(a); current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
A package bears required orientation arrows. How must it be carried?
Correct answer: In the indicated orientation throughout transportation.
Required orientation markings control both loading position and the package's position during transport.
Source: 49 CFR 177.834(b); current eCFR text for covered operations, retrieved September 21, 2026; reviewed September 21, 2026. ↗
