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Difficulty: EasyWeight Definitions and Limits (GVWR, GCWR, Axle Weights)

During an en-route stop at an official weigh station, a five-axle tractor-semitrailer combination is weighed on a certified axle scale. The individual axle scale readings are:

- Steer axle: 11800 lbs11{}800\text{ lbs}
- Drive tandem axles: 31400 lbs31{}400\text{ lbs}
- Trailer tandem axles: 32600 lbs32{}600\text{ lbs}

Based on these scale readings, what is the total Gross Combination Weight (GCW) of the vehicle in pounds?

Answer: 75800 lbs

Answer

The total Gross Combination Weight (GCW) of the vehicle is 75800 lbs75{}800\text{ lbs}.
Gross Combination Weight (GCW) is the total actual weight of the power unit, trailer, and all cargo. It is obtained by adding the actual weight measured across all axle groups: 11800 lbs+31400 lbs+32600 lbs=75800 lbs11{}800\text{ lbs} + 31{}400\text{ lbs} + 32{}600\text{ lbs} = 75{}800\text{ lbs}.

Step-by-Step Solution

1
Identify all individual axle group weights from the scale readouts.
Steer axle = 11800 lbs11{}800\text{ lbs}, Drive tandem = 31400 lbs31{}400\text{ lbs}, Trailer tandem = 32600 lbs32{}600\text{ lbs}.
Gross Combination Weight (GCW) represents the total actual weight of the entire powered unit, trailer, and cargo combined as measured by the sum of all axle loads.
2
Calculate the sum of the steer axle, drive tandem, and trailer tandem weights.
11800 lbs+31400 lbs+32600 lbs=75800 lbs11{}800\text{ lbs} + 31{}400\text{ lbs} + 32{}600\text{ lbs} = 75{}800\text{ lbs}
Adding the individual axle group weights yields the total actual weight of the combination vehicle on the roadway.

Key Concept

Gross Combination Weight (GCW) is the total actual scale weight of a powered unit plus all connected trailing units and cargo, calculated as the sum of all axle group weights.
Estimated Time:45s
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Topics

Weight Definitions and Limits (GVWR, GCWR, Axle Weights)

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