Figures & data
Figure 1. PIDA’s transport network plan (PIDA, Citation2012). [TAH: Trans-African Highway].
![Figure 1. PIDA’s transport network plan (PIDA, Citation2012). [TAH: Trans-African Highway].](/cms/asset/d740ffd0-3089-4563-83a1-ca86bc874884/ttrv_a_1414899_f0001_oc.jpg)
Figure 4. Trade estimates for the African road network (USD, million) and % changes in trade after road upgrading (Buys et al., Citation2010).
![Figure 4. Trade estimates for the African road network (USD, million) and % changes in trade after road upgrading (Buys et al., Citation2010).](/cms/asset/a82df9a2-dd8f-4b8e-8461-8b6ccb9a7aa5/ttrv_a_1414899_f0004_ob.jpg)
Figure 5. Main paved or partially improved roads within ECOWAS (Economic Community of West African States, Citation2005).
![Figure 5. Main paved or partially improved roads within ECOWAS (Economic Community of West African States, Citation2005).](/cms/asset/9e812aea-55f9-4bc3-90ca-49fd215a7ee8/ttrv_a_1414899_f0005_oc.jpg)
Figure 6. The correspondence between the ideal-typical sequence of Taaffe et al. (Citation1963) and the metropolisation process model shaped by transport infrastructure (Herce & Magrinyà, Citation2002).
![Figure 6. The correspondence between the ideal-typical sequence of Taaffe et al. (Citation1963) and the metropolisation process model shaped by transport infrastructure (Herce & Magrinyà, Citation2002).](/cms/asset/64d2c7bb-fa18-4dc9-8451-1dc1504951a7/ttrv_a_1414899_f0006_ob.jpg)