The Spatial Structure and Transportation
Six core concepts relates the spatial structure and transportation:
  • Location implies the setting of a system of reference (coordinate system) from which it is absolutely located.
  • Distance is a measure of the friction of space when a movement occurs and cannot be evaluated without at least two known locations. This friction can be expressed according to several factors such as length, time, cost, effort, energy or even the psychological perception of distance as a deterrent.
  • Fixedness. Since locations are fixed (absolute) disparities are incurred, because economic, social and political conditions change in space and time whereas the geographical location remains the same.
  • Attributes. All locations have different geographical attributes. These attributes are the set of specific characteristics that are relevant to a location, notably its resources. Population can also be considered as a resource through the labor it provides (qualifications and costs). The fact that different locations have different attributes is an important factor behind the generation and attraction of movements.
  • Relativity. All locations are relative since they must be considered in a wider context and since a location is often located by drawing reference to another. The importance of a location changes with regards to its importance relative to other locations and to the scale at which the comparison is made (local, regional or global). The relative position changes in time and with the development of activities.
  • Dynamics involves three major issues. First, changes at a location impact linked locations. Second, if a new link is created, the importance locations bound to this link will change. Third, whatever the nature of change, the effect will be positive or negative.