In freight classification, 'density' is calculated as weight divided by volume. Why is higher-density freight generally assigned a lower freight class?
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A
Denser freight is always less fragile and therefore cheaper to insure
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B
Higher density means more weight per cubic foot, making better use of trailer space and lowering carrier cost per pound
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C
Lower freight classes are reserved by regulation for commodities over 50 lbs/cu ft
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D
Carriers prefer dense freight because it qualifies for government freight subsidies