Authors: Dr. Jean-Paul Rodrigue, Dr. Brian Slack and Dr. Theo Notteboom
Transport terminals are central and intermediate locations. Their main influence is through their hinterlands, which are the land areas they service.
1. The Relative Location of Terminals
The situation, or relative location, is an important component of location. This core geographical concept refers to the position of places in relation to other places. Accessibility is relative, because the situation of places changes over time, namely if there are fluctuations in trade and growth opportunities. For example, ports in the Mediterranean used to be at the core of the western world during the Greek and Roman eras, and Genoa and Venice prospered during the Middle Ages. The emergence of the Americas, particularly the United States, as an economic power focused on Atlantic ports and the Mediterranean became more marginal. The opening of the Suez Canal in the 19th century refocused the relative location of the Mediterranean again with increased interactions with Asia. In the second half of the 20th century, the growth of the transpacific trade brought a new impetus to the Panama Canal. More recently, the growth of China has refocused trade flows in Central Asia. Each commercial shift is linked with new transportation networks, connectivity, and associated terminal investments.
Although the term “terminal” implies a final destination, because they are transfer points, terminals are typically intermediate locations in the global flows of passengers and freight. In order to carry out the transfer and bundling of passengers and freight, specific equipment and infrastructures are required. Differences in the nature, composition, and timing of transfer activities give rise to significant differentiation in the form and function between terminals. A primary distinction is between passenger and freight transfers because, in order to carry out the transfer and bundling of each type, specific equipment and infrastructures are required. Passenger and freight terminals are consequently referring to substantially different entities and often have different locational attributes.
Spatial relationships between terminals are a vital competitive element, particularly for ports and rail terminals. Landlocked countries do not have direct access to port terminals, and an intermediary country must be used. Still, the landlocked status can be relative and linked with the lack of transport infrastructure or services. Several concepts to explore these locational features have been developed. One of particular interest concerns the function of centrality and intermediacy performed by transport terminals.
Centrality. Focus on the terminal as a point of origin and destination. Thus, centrality is linked with the generation and attraction of movements, which are related to the nature and the level of economic activities within the vicinity of the concerned terminal. The function of centrality also involves a significant amount of intermodal activities.
One of the most enduring concepts in urban geography is the central places theory, with its emphasis on centrality as a feature of the urban hierarchy. Cities more centrally located to markets are larger with a broader range of functions. Transport accessibility is equated with size, and thus many large terminals arise out of centrality. Examples include Heathrow Airport, whose preeminence is related to London’s location as one of the world’s most important cities and financial centers. The port of New York owes its preeminence in part to the fact that it is at the heart of the largest market area in the United States; the Boston – Washington corridor. A similar observation applies to the port of Shanghai, serving a large market, industrial, and manufacturing base in Central China.
Intermediacy. Focus on the terminal as an intermediate point in the flows of passengers or freight. This term is applied to the frequent occurrence of locations, gaining an advantage because they are between other locations. The ability to handle transshipments has been an important feature of many terminals.
Anchorage, for example, is a convenient airport located on the great circle air routes between Asia and Europe and the Continental United States and Asia. For many years passengers alighted here while the planes refueled. The growth of long-haul jets has made this activity diminish considerably, and Anchorage now joins the list of once important airports, such as Gander, Newfoundland that have seen their relative locations change because of technological improvements. It should be noted, however, that Anchorage continues to fulfill its intermediacy role for air freight traffic. Other examples include Chicago, the dominant US rail hub, that is not only a major market area in its own right (centrality) but also lies at the junction of the major eastern and western railroad networks. Ports, too, can exploit the advantages of intermediate locations. One of the largest container ports in the Mediterranean, Gioia Tauro, is located on the toe of Italy. Because of its location close to the main East-West shipping lanes through the Mediterranean, it has been selected as a hub, where the large deep-sea ships can transfer containers to smaller vessels for distribution to the markets in the northern Mediterranean, a classic hub and spoke network.
Because of changing markets and technologies, many existing terminal sites are no longer suitable. This applies, particularly to rail and port terminals. In most cases, the sites are too small, poorly located, or in other ways, inadequate for modern transport operations. Modernization is usually impractical, and thus relocation and redevelopment are usually the only alternatives.
2. Hinterlands and Forelands
One of the most enduring concepts in transport geography is the hinterland:
The hinterland is a land area over which a transport terminal, such as a port, sells its services and interacts with its users. It accounts for the regional market share that a terminal has relative to a set of other terminals servicing a region. It regroups all the customers directly bounded to the terminal and the land areas from which it draws and distributes traffic. Depending on its nature, the terminal serves as a place of convergence for the traffic coming by roads, railways, or by sea/fluvial feeders.
The hinterland, or the “natural hinterland“, refers to the entire area from which it is possible to service from the terminal. Two types of additional hinterlands are noted:
- First, the fundamental hinterland (or captive) refers to the market area for which a terminal is the closest or the easiest to access. It is assumed that the majority of the traffic will pass through the terminal because of proximity and the lack of competitive alternatives.
- Second, the competitive hinterland (or contestable) is used to describe the market areas over which the terminal has to compete more intensively with others for business. It is also referred to as the competitive margin since this hinterland is commonly at the edge of the fundamental hinterland.
Transport terminals are elements of transport chains that include the notions of foreland and hinterland binding import and export activities. The concept of foreland is a mirror image of the hinterland:
The foreland of a terminal refers to the other terminals it is connected to. For a port, this would represent the other ports it is linked to through maritime shipping services. The foreland of an airport would represent all the connected airports accessible through regular air services.
The main nature of a hinterland is commercial, and its importance is linked with the level of economic activity as well as the level of competition from other modes not linked to the terminal. Geopolitical considerations can expand or restrict the hinterland of a transport terminal. For instance, a terminal such as a port may have a protected hinterland less accessible for competing terminals due to border and trade restrictions. Inversely, border and trade restrictions may impair the hinterland of a terminal into a nearby but foreign market area. For instance, the setting of the European Common Market area in 1993 enabled ports such as Antwerp to substantially expand their hinterlands in areas previously less accessible because of border crossings.
Hinterlands vary significantly for the same location if the flows concern passengers or freight. For airports, like most passenger terminals, the hinterland is well delimited and corresponds to a commuting range where customers can access the terminal within a couple of hours. The level of activity is proportional to the population density, the level of income, and the prominence of tertiary activities. For ports, like most freight terminals, the level of activity corresponds to the dynamics of the hinterland they are connected to, which is subject to changes in the nature of its activities and the level of accessibility. Any change implies either new opportunities to generate additional port traffic, a decline, or a change in the nature and composition of the traffic.
Hinterlands can further be discriminated by the type of commodity as each is part of a specific supply chain with its own spatial relationships:
- Bulk products (minerals, chemicals, raw materials, wood, grain, etc.). In this case, distance is one of the most important factors shaping hinterlands. Due to the nature of the products and the high transport costs involved, hinterlands tend to be small and serviced by high capacity corridors to the direct location of extraction or production.
- Parts and manufactured goods. Mostly concerns containerized traffic. Improvements in intermodal transportation and globalization have considerably expanded the hinterland for this type of traffic. In many cases, the hinterland can encompass large economic regions, particularly if transport corridors are involved.
With the emergence of feeder services and hub ports, the concept of foreland has been expanded as a port that can service a hinterland through a maritime link. The validity of the hinterland concept has been questioned, especially in the context of contemporary containerization. The mobility provided by the container has greatly facilitated market penetration so that many ports compete over the same market areas. Therefore, hinterlands may be overlapping. The notion of discrete hinterlands with well-defined boundaries is questionable since many hinterlands have become discontinuous, a process facilitated by the development of corridors and inland terminals. The extension and strengthening of hinterlands follow a vertical or horizontal integration process depending on if the port establishes more effective functional linkages with inland intermodal terminals (vertical) or other maritime terminals (horizontal). Nevertheless, the concept of the hinterland is still widely employed, and port authorities continue to emphasize their port’s centrality to hinterland areas in their promotional literature.
The provision of services to a wide range of markets around the world is considered to be an advantage. With the growth in maritime traffic and congestion in the proximity of port terminal facilities, several port authorities have become more involved in the development of strategies aiming to better service their hinterland. Such strategy and the stakeholders involved are dependent on the direction of the flows since import and export-based flows usually involve different. The foreland and hinterland should be seen as a continuum, rather than separate and distinct elements.
The emergence of door-to-door services and networks, where the port is seen as one link through transport chains, underlines this continuum. In such a context, the port becomes one element of the maritime / land interface, which ensures the continuity of global freight circulation, including expanding connectivity within the hinterland. A form of hinterland connectivity is based on the extended gate concept, where a series of terminals and the related logistics activities are integrated into a single functional entity.
3. Traffic Generation
Transportation terminals are focal points of economic activity. Cargo handling and passenger transfers represent an economic function, just like manufacturing or agriculture. The inputs and outputs are traffic flows. The extent of the activity can be measured easily, such as numbers of passengers handled, or numbers of trains departing. In many others, measurement is complicated. In the case of an airport, measuring the size by counting the number of aircraft movements can produce distortions because of differences in the size of the planes. This problem is even more acute in shipping, where small coastal ships of 500 tons capacity are considered as equal to bulk carriers of 250,000 tons in simple counts of vessel numbers. Similarly, there are major discrepancies between different types of cargo, where 1,000 tons of ore cannot be equated with 1,000 tons of electronics. The problems of measuring traffic volumes thus need to be carefully assessed.
Significant variations exist in the volumes of traffic handled by different terminals. Size variations tend to increase because of the trend across the modes for traffic to be concentrated in load centers. Specific terminals are selected as traffic hubs, where passengers and freight are assembled for onward distribution. This is most apparent in passenger air traffic, where many airlines have adopted hub-and-spoke network structures. Each hub is served by smaller regional carriers/planes for local service, with the hubs being linked by wide-bodied jets providing long-haul service. Similar systems have been established in the North American intermodal rail networks, where trucks provide local pick-up and delivery of containers and where double-stack trains haul the containers between the major hubs.
The origins and destinations of traffic is a vital concern for terminals since serving the hinterland is their prime function. Competition between terminals may be seen as a struggle to capture particular market areas. Successful terminals are those that have extended their hinterlands to capture market areas that were formerly served by a competitor. For much of the 19th Century, the ports of New York, Baltimore, Boston, and Philadelphia sought to control the trade of the developing Midwest, a battle that New York was able to win because of its superior rail and canal links. Maintaining dominance over a hinterland remains important as there are modal options such as rail that increase competition. This strategy is moving towards a new phase as areas nearby major terminals, particularly ports, tend to be congested. Still, it pans differently depending on the geographical setting (such as for Europe and North America). Attempts at modal shift and freight diversion are getting increasingly common.
4. Agglomeration, Linkages and Growth
The traffic flowing through terminals and the need to transfer freight between the modes gives opportunities to other activities to exploit locational advantages. There have been long-standing advantages for certain types of manufacturing to locate near terminals. Raw materials imported through a port provide opportunities for processing industries. Oil refineries, flour mills, sugar refineries, and steel processing are examples of industries that are frequently attracted to port sites. In a similar fashion, firms requiring good access to distant markets to sell their products have sought sites near rail facilities and airports.
The link between manufacturing and terminals, especially ports, gave rise to the concept of Maritime Industrial Development Areas. In Japan and Europe, in particular, post-war reconstruction involved the planning and establishment of new industrial complexes on sites adjacent to new port and rail terminals. The planning recognized the need to establish new terminal infrastructures as well as locating new manufacturing developments to serve as local clients of the facility. With globalization, this went further as production and consumption became increasingly separated, leading to a greater array of freight distribution activities. Thus, the link between distribution and terminals has also taken shape with the emergence of logistics zones.
While the relationships between terminals and the manufacturing sector are evident, even closer links exist with the service sector, although the relationships maybe not quite as visible. Terminal activity creates demands for an extensive range of transport services. These include activities as diverse as aircraft maintenance, locomotive repair, catering, warehousing, duty-free stores, hotels, freight forwarders, and customs brokers. Together they comprise an important business sector that contributes to the overall effectiveness of the terminal while being dependent upon it for business. This symbiotic relationship is reflected in the locational patterns of these firms. In most cities, these services are highly clustered in two concentrations. Many are located in close proximity to the terminal itself. Ship chandlers, catering, and hotels, for instance, are usually situated close to the port or airport. A further cluster is usually found in the central business district. Forwarders, brokers, insurance, or ticket offices are typically in central urban locations.
According to the growth poles theory, development is not uniform and takes place at specific locations around which activities agglomerate. By the infrastructure terminals provide, activities can improve their accessibility to suppliers and customers. In addition to the linkages with manufacturing and the service sector, terminals are major employers in their own right. In order to operate a major terminal requires a wide range of employee skills, from baggage handling and aircraft refueling, to air traffic controllers and ships’ pilots. Terminals, therefore, are economic forces in their own right, and because they generate links to other sectors of the economy, they become the focus of economic activity. They are frequently considered as growth poles. For instance, a growth strategy for inland terminals revolves around the formation of logistics zones where distribution centers share common facilities, including better access to a transport terminal.
Terminals represent an important category of land use. Frequently, they are the largest single users of land in a city and important in understanding transport terminal land use and its relationships. Terminals such as ports exert a significant influence over neighboring land uses. This is due in part because of the intense linkages they generate with other urban functions, but it is also owing to externalities that are frequently negative. Thus, industrial land is commonly associated with terminal sites, which are among the most important industrial zones in a city. However, because of noise, pollution, and visual blight, both of the terminals and adjacent industries, terminals can also be areas of social, economic, and environmental degradation. Older port sites and rail terminals, in particular, are seen as disadvantaged. Docklands areas, in many cases, are centers of poverty and social deprivation.
- The Function of Transport Terminals
- Transport and Location
- Port Terminals
- Rail Terminals
- Airport Terminals
- Transport Terminal Governance
- Inland Ports (Terminals)
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