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386       Part 5  | Distribution Decisions



                                               Transportation Modes
                                                The basic transportation modes for moving physical goods are railroads, trucks, waterways,
                                          airways, and pipelines. Each has distinct advantages. Many companies adopt physical han-
                                          dling procedures that facilitate the use of two or more modes in combination.   Table 13.2    gives
                                          more detail on the characteristics of each transportation mode.
                                               Railroads like Union Pacific and Canadian National carry heavy, bulky freight that must
                                          be shipped long distances over land. Railroads commonly haul minerals, sand, lumber, chemi-
                                          cals, and farm products, as well as low-value manufactured goods and automobiles. Many
                                          companies locate factories or warehouses near rail lines for convenient loading and unloading.
                                               Trucks provide the most flexible schedules and routes of all major transportation modes
                                          in the United States because they can go almost anywhere. Because trucks do not have to con-
                                          form to a set schedule and can move goods from factory or warehouse to customer, wherever
                                          there are roads, they are often used in conjunction with other forms of transport that cannot
                                          provide door-to-door deliveries, such as waterways and railroads. Trucks are more expensive
                                          and somewhat more vulnerable to bad weather than trains. They are also subject to size and
                                          weight restrictions on the loads they carry. Trucks are sometimes criticized for higher levels of
                                          freight loss and damage and for delays caused by the rehandling of small shipments.
                                                   Waterways are the cheapest method of shipping heavy or low-value, nonperishable
                                          goods. Water carriers offer considerable capacity. Powered by tugboats and towboats, barges
                                          that travel along intracoastal canals, inland rivers, and navigation systems can haul at least
                                                  10     times the weight of a rail car, and oceangoing vessels can haul thousands of containers. The
                                          vast majority of international cargo is transported by water at least part of the way. However,
                                          many markets are inaccessible by water transportation and must be supplemented by rail or
                                          truck. Droughts and fl oods also may create diffi culties for users of inland waterway transpor-
                                          tation. Nevertheless, the growing need to transport goods long distances across the globe will
                                          likely increase its use in the future.
                                               Air transportation is the fastest but most expensive form of shipping. It is used most often
                                          for perishable goods, for high-value and low-bulk items, and for products that require quick
                                          delivery over long distances. Some air carriers transport combinations of passengers, freight,
                                          and mail. Despite its expense, air transit can reduce warehousing and packaging costs and
                                          losses from theft and damage, thus helping to lower the aggregate cost of the mode. Although
                                          air transport accounts for a small minority of total cargo carried, it is an important form of



                    Table  13.2    Characteristics and Ratings of Transportation Modes by Selection Criteria

                      Selection Criteria   Railroads  Trucks         Pipelines     Waterways          Airplanes
                     Cost          Moderate       High            Low            Very low         Very high

                     Speed         Average        Fast            Slow           Very slow        Very fast

                     Dependability   Average      High            High           Average        High
                     Load fl exibility   High     Average         Very low         Very high      Low

                     Accessibility   High         Very high         Very limited     Limited    Average

                     Frequency     Low            High            Very high        Very low       Average
                     Products carried   Coal, grain,     Clothing,     Oil, processed     Chemicals,     Flowers, food (highly
                                   lumber, paper   computers,     coal, natural   bauxite, grain,   perishable), technical
                                   and pulp       books, groceries   gas         motor vehicles,   instruments, emergency
                                   products,      and produce,                   agricultural   parts and equipment,
                                   chemicals      livestock                      implements     overnight mail
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