What are hazardous-material containment rules designed to do?
Correct answer: Keep hazardous material safely inside its packaging
Containment rules protect people and the environment by controlling packaging and handling.
Source: Texas DL-7C, March 2026, section 9, PDF page 113: Regulation purpose ↗
What knowledge must a driver demonstrate for a HazMat endorsement?
Correct answer: Identification, safe loading, placarding, and safe transportation
The H test covers recognizing, loading, placarding, and transporting hazardous material.
Source: Texas DL-7C, March 2026, section 9, PDF page 113: H endorsement ↗
Who determines the proper shipping name, ID number, hazard class, packing group, packaging, labels, and placards?
Correct answer: The shipper
The shipper classifies and prepares the material and certifies compliance.
Source: Texas DL-7C, March 2026, section 9, PDF page 113: Shipper duties ↗
What should a carrier do with a shipment that is improperly described, marked, labeled, or prepared?
Correct answer: Refuse it
The carrier checks preparation before transportation and refuses improper shipments.
Source: Texas DL-7C, March 2026, section 9, PDF page 113: Carrier duties ↗
What must a driver do with a leaking hazardous-material package?
Correct answer: Refuse the package or shipment
Drivers must reject leaking packages and follow all HazMat transport rules.
Source: Texas DL-7C, March 2026, section 9, PDF page 113: Driver duties ↗
Where may HazMat shipping papers be kept while the driver is behind the wheel?
Correct answer: Within reach while belted, and either readily visible or in the mounted driver-door holder
Immediate reach while restrained by the lap belt is required in both cases. The papers must also be readily visible to someone entering the cab or be in the inside driver-door holder.
Source: 49 CFR 177.817(e)(2)(i)(A)-(B): Reach while restrained, plus visibility or door holder ↗
Where should shipping papers be left when the driver exits the vehicle?
Correct answer: In the driver-door pouch or on the driver’s seat
The required location makes them quickly visible after an emergency.
Source: Texas DL-7C, March 2026, section 9, PDF page 126: Leaving the cab ↗
How many hazard classes are used in the HazMat system?
Correct answer: Nine
The regulations organize hazardous materials into nine classes.
Source: Texas DL-7C, March 2026, section 9, PDF page 114: Hazard classes ↗
What is the usual shape of a package hazard-warning label?
Correct answer: Diamond
The usual package hazard-warning label is a square positioned on a point, giving it a diamond shape.
Source: 49 CFR 172.407(c)(1): Diamond label; tag exceptions separately in 172.406(b) ↗
What is the required order of the basic HazMat description?
Correct answer: ID number, proper shipping name, hazard class or division, then packing group if assigned
Use this order for the basic description. A packing group is included only when one is assigned; not every hazardous material has one.
Source: Texas DL-7C, March 2026, section 9, PDF page 118: Shipping description ↗
Which is an authorized way to identify hazardous entries on a shipping paper that also lists nonhazardous freight?
Correct answer: Place an X before the basic description in a column headed HM
An X in the HM column is one method; RQ may replace it when appropriate. Other methods are listing hazardous entries first or using contrasting-color entries; highlighting is permitted on reproductions.
Source: 49 CFR 172.201(a)(1)(i)-(iii): Mixed-paper identification methods ↗
When an emergency-response telephone number is required on a shipping paper, who must provide it?
Correct answer: The shipper
The shipper supplies a number connected to a responsible emergency-information provider.
Source: Texas DL-7C, March 2026, section 9, PDF page 118: Emergency number ↗
What must accompany HazMat shipping papers?
Correct answer: Emergency-response information usable away from the vehicle
It includes hazards, precautions, firefighting, spill response, and first-aid information.
Source: Texas DL-7C, March 2026, section 9, PDF page 118: Emergency information ↗
A hazardous-waste shipping name does not already contain WASTE. What word must the shipper add before that name?
Correct answer: WASTE
Add WASTE before the proper shipping name when the name does not already contain it. The hazardous-waste manifest serves as a shipping paper.
Source: Texas DL-7C, March 2026, section 9, PDF page 118: Hazardous waste ↗
To whom may a driver deliver a hazardous-waste shipment?
Correct answer: The recipient designated under the manifest, with any change made under the applicable rules
Follow the manifest's designated facility or next transporter. Emergency or authorized changes have specific procedures; registration alone does not authorize delivery to an arbitrary recipient.
Source: 40 CFR 263.21(a)-(b): Designated recipient and authorized manifest changes ↗
What should a driver compare with the shipping paper before accepting HazMat?
Correct answer: Package markings and hazard labels
Shipping names, ID numbers, markings, and labels should agree.
Source: Texas DL-7C, March 2026, section 9, PDF page 119: Package comparison ↗
Where must placards normally be displayed on a vehicle?
Correct answer: On both sides and both ends
Placards must be visible, level, clean, undamaged, and on a contrasting background.
Source: Texas DL-7C, March 2026, section 9, PDF page 120: Placard position ↗
Which facts determine the placards required?
Correct answer: Hazards, packaging type, quantities aboard, and applicable placarding exceptions
Use the applicable placarding tables and exceptions. Bulk packaging and subsidiary hazards can change the result, so total weight alone is not enough.
Source: 49 CFR 172.504(a)-(f): General placarding, packaging, quantities and exceptions ↗
When must a Table 1 material be placarded?
Correct answer: Whenever any amount is transported
Table 1 hazards require placards at any quantity.
Source: Texas DL-7C, March 2026, section 9, PDF page 120: Table 1 ↗
For a non-bulk highway shipment of ordinary Class 3 and Class 8 materials with no other applicable exception, what total gross weight triggers placarding?
Correct answer: 1,001 pounds or more including packaging
Add the materials and their packaging. The ordinary Table 2 non-bulk threshold is 454 kg (1,001 lb). Bulk packaging, subsidiary hazards, and other regulatory exceptions are handled separately.
Source: 49 CFR 172.504(c): Non-bulk placarding threshold ↗
