After its last required cargo check, a truck with inspectable cargo travels 150 miles in 2 hours without a duty-status change. Must the driver wait until 3 hours to recheck?
Correct answer: No. The 150-mile trigger has already been reached.
After the initial check, reexamination is required when a duty-status change, 3 hours of driving or 150 miles occurs first. Here distance triggers the check before the time limit. The question assumes no inspection exception.
Source: 49 CFR 392.9(b)(3)-(4); eCFR title 49 displayed current through September 10, 2026; reviewed September 14, 2026. ↗
A CMV is sealed and the driver has been ordered not to open it to inspect the cargo. How does 49 CFR 392.9(b) address this?
Correct answer: Its driver-inspection provisions have an exception for that situation.
The sealed vehicle plus an instruction not to open it is an express exception to paragraph (b)'s driver-inspection provisions. It is not a blanket waiver of safe loading, securement or weight requirements.
Source: 49 CFR 392.9(b)(4), with (a); eCFR title 49 displayed current through September 10, 2026; reviewed September 14, 2026. ↗
The freight is tied down, but the truck's spare tire and tailgate are not secured. What must happen before operation?
Correct answer: Secure the loose operating equipment as well as the freight.
The rule covers tailgates, doors, tarpaulins, spare tires and other operating equipment as well as the load's fastening devices. Secure freight does not excuse loose equipment.
Source: 49 CFR 392.9(a)(2); eCFR title 49 displayed current through September 10, 2026; reviewed September 14, 2026. ↗
A tire's load rating is stated for a specified inflation pressure. What should a driver understand?
Correct answer: The rating is a capacity limit, not permission to add weight regardless of pressure.
Tires have a maximum safe load at a specified pressure. Respect the rating and proper inflation conditions rather than using tread depth or appearance as proof that a heavier load is acceptable.
Source: Colorado Commercial Driver License Manual (06/15/23), Section 3; 3.2.1 Tire Load; physical PDF page 56 (printed 56); reviewed September 14, 2026. ↗
What can happen when too much load is placed on the steering axle?
Correct answer: Steering can become difficult and axle or tire damage can result.
Too much steering-axle weight can make steering hard and overload the axle or tires. More front weight is not automatically better; keep loading within ratings and distribute it correctly.
Source: Colorado Commercial Driver License Manual (06/15/23), Section 3; 3.2.4 Balance the Weight; physical PDF page 57 (printed 57); reviewed September 14, 2026. ↗
Why might carrying a legal maximum load still be unsuitable for a particular trip?
Correct answer: Mountain grades or bad weather can make that load unsafe for the conditions.
Legal limits are not a guarantee that operating at the maximum is safe in every situation. Grade, weather and vehicle condition can call for a more conservative load or operating plan.
Source: Colorado Commercial Driver License Manual (06/15/23), Section 3; 3.2.2 Legal Weight Limits; physical PDF page 56 (printed 56); reviewed September 14, 2026. ↗
Why may freight inside a closed van trailer still need tiedowns or other restraint?
Correct answer: It can shift inside and change the vehicle's handling.
Enclosing freight does not necessarily immobilize it. Movement inside the trailer can upset handling or damage the load and vehicle, so use an appropriate securement arrangement.
Source: Colorado Commercial Driver License Manual (06/15/23), Section 3; 3.3.2 Cargo Tie-down; physical PDF page 57 (printed 57); reviewed September 14, 2026. ↗
Why does a dry-bulk tank or hopper require extra care on curves?
Correct answer: Its high center of gravity and shifting material can reduce stability.
Dry bulk is not necessarily a fixed, solid load. Its material can move, and the vehicle may have a high center of gravity. Approach curves slowly and smoothly with the actual load in mind.
Source: Colorado Commercial Driver License Manual (06/15/23), Section 3; 3.4.1 Dry Bulk; physical PDF page 58 (printed 58); reviewed September 14, 2026. ↗
A freight container has been placed on its intended truck chassis. Is placement alone enough to secure it?
Correct answer: No. Its proper locks or other required securement must be engaged.
Containers must be properly attached to the vehicle just like other cargo. Some use dedicated locks and frames; being seated in the intended position is not the same as being secured.
Source: Colorado Commercial Driver License Manual (06/15/23), Section 3; 3.3.5 Sealed and Containerized Loads; physical PDF page 58 (printed 58); reviewed September 14, 2026. ↗
A tiedown touches a cargo edge that can cut or abrade it. What is required?
Correct answer: Suitable edge protection that resists abrasion, cutting and crushing.
Use edge protection when contact with the cargo could abrade or cut the tiedown. The protector itself must be able to resist abrasion, cutting and crushing.
Source: 49 CFR 393.104(f)(4); eCFR title 49 displayed current through September 10, 2026; reviewed September 14, 2026. ↗
A tiedown's hook can open or release as the truck moves. What must be changed?
Correct answer: Attach and secure it so it cannot unintentionally loosen or release in transit.
A tiedown must remain attached and secured throughout transport. An arrangement that can loosen, open or release while moving does not meet that requirement.
Source: 49 CFR 393.104(f)(3); eCFR title 49 displayed current through September 10, 2026; reviewed September 14, 2026. ↗
An 8,000-lb article is secured with tiedowns under the general federal cargo rule. What minimum aggregate WLL is required, apart from other securement requirements?
Correct answer: 4,000 lb.
The aggregate tiedown WLL must be at least half the article's weight: 8,000 ÷ 2 = 4,000 lb. Calculate each tiedown's contribution correctly and also meet the applicable number, arrangement and performance requirements.
Source: 49 CFR 393.106(d); eCFR title 49 displayed current through September 10, 2026; reviewed September 14, 2026. ↗
A 6,000-lb-WLL tiedown passes over the cargo from a vehicle anchor to another anchor on the opposite side. How much does it contribute to aggregate WLL?
Correct answer: 6,000 lb.
This opposite-side arrangement contributes the tiedown's full WLL. It does not double the rating, and the assembly's own rating must already reflect its limiting components and anchors.
Source: 49 CFR 393.106(d)(3); eCFR title 49 displayed current through September 10, 2026; reviewed September 14, 2026. ↗
A 4-foot article weighs 1,400 lb and is not blocked against forward movement. With no special-purpose exception, what minimum tiedown count applies?
Correct answer: Two.
An unblocked article 5 feet or shorter needs at least two tiedowns when its weight exceeds 1,100 lb. Its short length does not qualify it for the short-and-light one-tiedown case.
Source: 49 CFR 393.110(b)(2)(i); eCFR title 49 displayed current through September 10, 2026; reviewed September 14, 2026. ↗
A 21-foot article is adequately blocked against forward movement and is subject to 49 CFR 393.110(c). What is the minimum tiedown count?
Correct answer: Three.
For the stated forward-blocked situation, use at least one tiedown for each 10 feet or fraction. Twenty-one feet therefore needs three. Blocking and tiedown strength must also be adequate.
Source: 49 CFR 393.110(c); eCFR title 49 displayed current through September 10, 2026; reviewed September 14, 2026. ↗
Cargo rests against a front-end structure used for securement. A gap is large enough for a contacting article to pass through. Does that satisfy the federal penetration-resistance requirement?
Correct answer: No. The structure must not have an opening that lets that article pass through.
The applicable front-end structure must resist penetration and have no aperture large enough for a contacting cargo article to pass through. A label or appearance does not establish the required protection.
Source: 49 CFR 393.114(a) and (d); eCFR title 49 displayed current through September 10, 2026; reviewed September 14, 2026. ↗
