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Topic 1 – Transportation and Geography

Topic 1 – Transportation and Geography. What is Transport Geography? Transportation and Space The Geography of Transportation Networks. C – The Geography of Transportation Networks. 1. Transport Networks 2. The Topology and Typology of Networks 3. Networks and Space . 1. Transport Networks.

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Topic 1 – Transportation and Geography

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  1. Topic 1 – Transportation and Geography What is Transport Geography? Transportation and Space The Geography of Transportation Networks

  2. C – The Geography of Transportation Networks 1. Transport Networks 2. The Topology and Typology of Networks 3. Networks and Space

  3. 1. Transport Networks • Transport network • Framework of routes between locations: • A permanent track (e.g. roads, rail and canals). • A scheduled service (e.g. airline, public transit, train). • Various types of links between points along which movement can take place. • Creates accessibility. • Network structure • Ranges from centripetal to centrifugal. • Express inequalities between places. • Express transport rates. • Integration processes impacted on the structure and flows of transportation networks.

  4. Centrifugal and Centripetal Networks Centrifugal Centripetal

  5. Transport Hub Point-to-Point Hub-and-Spoke Hub

  6. Detour Level in a Hub-and-Spoke Network A 1 D B C

  7. Cost, Revenue and Level of Network Coverage Cost: 10 Revenue: 15 Benefit: 5 4 5 A 10 3 7 Cost: 12 Revenue: 18 Benefit: 6 B Cost: 14 Revenue: 25 Benefit: 11 C Cost: 19 Revenue: 29 Benefit: 10 D

  8. Impacts of Integration Processes on Networks and Flows After Integration Before Integration International border Network Flows

  9. 2. The Topology and Typology of Networks • Topology • The arrangement and connectivity of a network. • Each network has a specific topology • Linear networks: • Only one link between each node pairs. • Each node has a maximum of two links. • Tree networks: • Converging to one node from a hierarchy of other nodes. Linear Tree

  10. 2. The Topology and Typology of Networks • Mesh networks: • At least two nodes with two or more links between them. • Hub-and-spoke networks: • Peripheral nodes (spokes) are connected to a central node; the hub. Mesh Hub-and-Spoke

  11. Network Strategies to Service a Set of Locations A B C E F D

  12. Mode of Territorial Occupation by Transport Networks Overlap Clearly Defined Vaguely Defined Air corridor Rail “No service” Road Cellular coverage Maritime corridor Without Definition Reserved space for transport infrastructure. Ownership clearly established. Road, canal and railway networks. Shared space. Not the object of any particular ownership, only rights of way. Air and maritime transportation networks. Space has no tangible meaning, except for as a distance. Little control and ownership. Common usage agreements. Radio, television and cellular networks.

  13. 3. Networks and Space • Shaping accessibility • The territory is a topological space having two or three dimensions, depending on the transport mode considered. • Flows and infrastructures are linear; having one dimension. • Accessibility is the transposition of a network over space. Transport Network Space Accessibility

  14. Absolute and Relative Distance in a Network 30 minutes 10 km

  15. Spatial Continuity by Transportation Mode

  16. Networks and Spatial Continuity A B C

  17. Networks as Tools of Spatial Cohesion (Control)

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