Nairobi has been ranked the second-worst city in the world with the most traffic congestion.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/kenya-traffic-jam-makes-nairobi-worlds-second-worst-city
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/all-africa
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/congestion
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/transport
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kenya
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kolkata
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution