An interstate enforcement weigh station records the following individual axle group weight… — Commercial Driver's License (CDL) General Knowledge Exam

An interstate enforcement weigh station records the following individual axle group weights for an operating five-axle tractor-semitrailer combination:

Axle Group	Measured Scale Weight
Steering axle (single axle)	$11,800\text{ lb}$
Drive axle group (tandem axle)	$35,400\text{ lb}$
Trailer axle group (tandem axle)	$31,200\text{ lb}$
Total Gross Combination Weight	$78,400\text{ lb}$

Under standard federal statutory weight limits on the interstate highway system, which of the following statements correctly evaluates the legal operating status of this vehicle?

A
The vehicle is legal to operate without citation because the total gross combination weight does not exceed the federal limit of $80,000\text{ lb}$ .
The vehicle is overloaded and in violation because the drive tandem axle exceeds the federal statutory limit of $34,000\text{ lb}$ , despite total gross weight being within legal limits.Cevap
C
The vehicle is legal to operate because any axle group is permitted up to $40,000\text{ lb}$ provided the steering axle remains below $12,000\text{ lb}$ .
D
The vehicle is overloaded because the steering axle exceeds the standard interstate limit of $10,000\text{ lb}$ for a two-tire steer axle configuration.

Cevap

The vehicle is overloaded and in violation because the drive tandem axle exceeds the federal statutory limit of

34,000\text{ lb}

, despite total gross weight being within legal limits.

Federal statutory weight limits enforce maximums of

80,000\text{ lb}

for gross vehicle weight,

20,000\text{ lb}

for a single axle, and

34,000\text{ lb}

for a tandem axle. Although the combination's total weight of

78,400\text{ lb}

is within the

80,000\text{ lb}

ceiling, the drive tandem scale weight of

35,400\text{ lb}

exceeds the statutory tandem ceiling of

34,000\text{ lb}

1,400\text{ lb}

, placing the vehicle in violation.

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Evaluate the total gross combination weight against federal interstate statutory maximums.

The total gross weight of

78,400\text{ lb}

is less than the federal gross combination limit of

80,000\text{ lb}

Commercial motor vehicles must comply with overall gross limits as well as individual axle limits.

Compare individual axle and tandem group weights against federal statutory limits (

20,000\text{ lb}

for single axles,

34,000\text{ lb}

for tandem axles).

Steering axle (

11,800\text{ lb} \le 20,000\text{ lb}

) is compliant; trailer tandem (

31,200\text{ lb} \le 34,000\text{ lb}

) is compliant; drive tandem (

35,400\text{ lb} > 34,000\text{ lb}

) is overloaded by

1,400\text{ lb}

Axle weight limits protect pavement and bridge infrastructure and must be satisfied independently of gross vehicle weight.

Anahtar Kavram

Independent Application of Federal Gross Combination and Axle Weight Limits

Tahmini Süre:1m 15s

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