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Figure 9 | EPJ Data Science

Figure 9

From: Estimation and monitoring of city-to-city travel times using call detail records

Figure 9

Getting out of Dakar takes time. On the left (Panel A), we display straight-line travel speeds from Dakar to selected other cities in Senegal. The figure shows that the longer the distance from Dakar, the faster the speed of travel, except for Ziguinchor to which travel often takes place by ferry resulting in slow travel speed. The grey network in the background represents Senegal’s road network obtained from Ref. [37]. The gap in the road network between the southern and northern parts of Senegal corresponds to Gambia for which road network data is not included. On the right (Panel B) we show a close-up map showing the main roads close to the capital Dakar that is located on a peninsula. The stretch of the Dakar-Diamniadio highway that was opened on August 1st 2013 is highlighted with a thick dark blue line. The map image in Panel B is a modified excerpt from OpenStreetMap (© OpenStreetMap contributors).

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