In transportation planning, converting freight flows to truck flows involves accounting for the payload capacity of trucks. This is done using the payload factor, which accounts for the weight of cargo that can be carried by the truck. The payload factor helps estimate how much of the freight flow corresponds to truck capacity in terms of actual usable weight. Why other options are incorrect:
- Volume factor (A) relates to volume but is not as commonly used for weight-based conversions.
- Weight factor (B) generally refers to weight but does not directly account for truck capacity as effectively as the payload factor.
- Distance load factor (D) adjusts for distance, but does not specifically address the conversion of freight to truck loads.
Thus, the correct answer is (C).
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