An interstate truck carries inspectable crates, with no sealed-load or impracticable-inspection exception. After departure, when must the first cargo and securement inspection occur under section 392.9?
Correct answer: Within the first 50 miles of the trip.
The initial en-route check is due within 50 miles, not at the later reinspection mileage. Necessary adjustments must be made; departure inspection alone does not satisfy this later check.
Source: 49 CFR 392.9(b)(2); reviewed September 22, 2026. ↗
A covered interstate truck has traveled 150 miles in two driving hours since its last cargo reinspection, without a duty-status change. No inspection exception applies. May the driver wait for a third driving hour?
Correct answer: No. The 150-mile trigger has already been reached.
After the initial check, reexamination is triggered by a duty-status change, three driving hours or 150 miles, whichever comes first. Here distance reaches its limit before time does.
Source: 49 CFR 392.9(b)(3)(i)–(iii); reviewed September 22, 2026. ↗
A covered interstate truck has driven for three hours but traveled only 90 miles since its last cargo reinspection. No duty-status change or inspection exception applies. What is required?
Correct answer: Reexamine the cargo and securement; the time trigger has been reached.
The three-driving-hour trigger applies even when traffic has kept the distance low. The rule uses whichever trigger comes first, rather than requiring both the time and distance thresholds.
Source: 49 CFR 392.9(b)(3)(ii)–(iii); reviewed September 22, 2026. ↗
A covered interstate truck driver changes from driving to on-duty paperwork after just one hour and 40 miles since the last cargo reinspection. No inspection exception applies. Does the duty-status change itself trigger reexamination?
Correct answer: Yes. A duty-status change is a separate trigger.
The rule includes a change in the driver's duty status independently of the three-hour and 150-mile intervals. Reexamine the cargo and securement and make any necessary adjustments when a trigger occurs.
Source: 49 CFR 392.9(b)(3)(i); reviewed September 22, 2026. ↗
A covered interstate truck is sealed and its driver has been ordered not to open it to inspect the cargo. What does the exception in section 392.9(b)(4) change?
Correct answer: It excepts that driver from paragraph (b)'s inspection duties, not paragraph (a)'s cargo-safety conditions.
The sealed-and-do-not-open condition is an exception to the duties in paragraph (b). It is not a blanket removal of paragraph (a)'s requirements concerning distribution, securement, equipment and unobstructed driver access.
Source: 49 CFR 392.9(a), (b)(4); reviewed September 22, 2026. ↗
In a covered interstate truck, a secured parcel prevents the driver from readily reaching the required fire extinguisher. Is the arrangement acceptable merely because the parcel cannot slide?
Correct answer: No. Required emergency equipment must remain readily accessible.
Cargo must not prevent ready access to required emergency accessories. Securing an object against movement does not excuse placing it where it blocks equipment needed in an emergency.
Source: 49 CFR 392.9(a)(3); reviewed September 22, 2026. ↗
A covered interstate truck's freight is restrained, but its spare tire and tailgate are not secured. Can the driver depart on the basis that the freight itself is secure?
Correct answer: No. The spare tire, tailgate and other operating equipment must also be secured.
Section 392.9 expressly includes operating equipment, not just the transported goods. An unsecured spare tire or tailgate remains a problem even when the main cargo restraints are satisfactory.
Source: 49 CFR 392.9(a)(2); reviewed September 22, 2026. ↗
A covered interstate truck carries a firmly fastened package across the passenger's route out of the cab. The driver's own door is clear. Does this satisfy the cab-exit requirement?
Correct answer: No. Free and ready exit is required for any person in the cab.
The requirement protects any person's free and ready exit from the cab or driver compartment. A passenger's obstructed escape path is not made acceptable by leaving the driver's door clear.
Source: 49 CFR 392.9(a)(3); reviewed September 22, 2026. ↗
A truck on the Interstate System has acceptable total, single-axle and tandem weights. An interior axle group exceeds its applicable federal bridge-formula limit, and no exception or permit applies. Is the load compliant?
Correct answer: No. The applicable axle-group limit must be met as well.
Satisfying the total and individual axle limits does not remove the bridge-formula requirement for consecutive axle groups. The stated excess must be corrected before operating under these ordinary limits.
Source: 23 CFR 658.17(a)–(e); reviewed September 22, 2026. ↗
Two trucks impose the same total and individual axle weights, but one concentrates its axles over a shorter length. Why does bridge-load planning consider that difference?
Correct answer: Axle spacing affects how concentrated the load is on the bridge.
The bridge formula relates allowable load to axle number and spacing. Equal gross weights do not mean that two differently spaced vehicles impose the same concentrated loading or have identical allowable axle-group weights.
Source: FHWA Bridge Formula Weights, Is the Formula Necessary? and How Is the Formula Used?; August 2019; reviewed September 22, 2026. ↗
A loading change moves too much weight toward the back of a truck and leaves the front axle unusually light. What handling problem can result?
Correct answer: The steering axle may have too little weight for safe steering.
Moving weight rearward can unload the steering axle enough to impair control. A loading plan must provide suitable distribution, not merely fit all the goods inside the vehicle.
Source: ALEA Commercial Driver's License Manual, posted 160-page PDF, Section 3 body version July 2017; 3.2.4 Balance the Weight; printed page 3-2, physical PDF page 68; reviewed September 22, 2026. ↗
After loading, excessive weight is concentrated on a truck's steering axle. Which concern is consistent with the cargo-safety guidance?
Correct answer: Hard steering and possible damage to the axle or tires.
An overloaded steering axle can make steering difficult and overload its components. Correct the loading and confirm applicable capacities; physical room for the cargo does not establish safe distribution.
Source: ALEA Commercial Driver's License Manual, posted 160-page PDF, Section 3 body version July 2017; 3.2.4 Balance the Weight; printed page 3-2, physical PDF page 68; reviewed September 22, 2026. ↗
