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Similar in concept to the groupings or grading systems used in other industries, with the NMFC, commodities are grouped into one of 18 classes—from a low of class 50 to a high of class 500. [1] Classification is based on an evaluation of four transportation characteristics: density, stowability, handling and risk or liability.
Dimensional weight is representative of the weight of the package at the minimum density accepted by the freight carrier. [3] Shipping factors are not only different for imperial and metric measurements, but also for shipment mode and in some cases between different customers. Shipping factors will be available from the freight carrier.
A freight rate (historically and in ship chartering simply freight [1]) is a price at which a certain cargo is delivered from one point to another. The price depends on the form of the cargo, the mode of transport ( truck , ship , train , aircraft ), the weight of the cargo, and the distance to the delivery destination.
Analysis is disaggregate in that individuals are the basic units of observation, yet aggregate because models yield a single set of parameters describing the choice behavior of the population. Behavior enters because the theory made use of consumer behavior concepts from economics and parts of choice behavior concepts from psychology.
Transportation density can be defined as the payload per period, say passenger / day or tonne / day. This can be used as the measure of intensity of the transportation on a particular section or point of transportation infrastructure, say road or railway.
Parcel carriers handle small packages and freight that can be broken down into units less than approximately 150 pounds (68 kg). Full truckload carriers move entire semi-trailers . Semi-trailers are typically between 26 and 53 feet (7.92 and 16.15 m) and require a substantial amount of freight to make such transportation economical.
In the United States, commercial truck classification is determined based on the vehicle's gross vehicle weight rating (GVWR). The classes are numbered 1 through 8. [ 2 ] [ 3 ] Trucks are also classified more broadly by the Federal Highway Administration (FHWA), which groups classes 1 and 2 as light duty , 3 through 6 as medium duty , and 7 and ...
Unit loads of items secured to a pallet or skid are also used. [1] Bulk cargo (bulk dry cargo) Weighable No No Bulk cargo is commodity cargo that is transported unpackaged in large quantities. It refers to material in either liquid or granular, particulate form, as a mass of relatively small solids, such as petroleum/crude oil, grain, coal, or ...