Network Analysis of Matatu Routes

By Chris Orwa
  Published 16 Apr 2016
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Yesterday’s Data Science meet-up at One Africa Media had an interesting presentation from Henk Harmsen. He picked the data set from and built a network graph of bus and matatu stages in Nairobi.  In it, he uncovered fascinating facts. First, which is the busiest matatu stage in Nairobi?  It’s not what you think – turns out Agip, the nondescript stage next to KRA headquarters handles about 80% of matatu traffic in Nairobi. The diagram below captures the details.

Nairobi Backbone Transport Network Nairobi Backbone Transport Network

Seocond. While Agip handles most traffic, Ambassadeur stage provides the best interconnection within the city i.e Ambassadeur is the best axis point of connecting a traveler from one part of the city to another. It is worth noting that Ambassadeur stage host the three largest bus fleet in Nairobi (KBS, Citi Hoppa and City Shuttle) as per my previous analysis. A further confirmation that these bus companies have the widest coverage of the city. Let’s look at a different perspective – if Agip and Ambassadeur are removed from the list of stages, which are the next busiest stages in Nairobi? The diagram below points to Khoja and Kariakor.

Route Network in Nairobi Route Network in Nairobi

These visualizations poke a hole in the notion that most traffic in Nairobi CBD emanates from Eastlands. Seems most traffic in the CBD originates from Mombasa road, Langata Road, Ngong road and Thika road.

Visualizations: Henk Harmsen
Musings at :

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