http://www.bbc.co.uk/news/world-34876981 (37 secs video)
British traffic can get pretty bad. But, a 3-day traffic jam...?
The 50km (30 miles) road between Mombasa and Nairobi needed repairs following heavy rains. Those repairs began on 17 November 2015, immediately causing a 50km tailback. 3 days later both repairs & tail-back were still in operation.
--------- Alex Kemp