Who is responsible for the poor functioning of traffic lights?

Editor, Refer to Allan Brian Ssenyonga’s article, “We can do better to manage city traffic” (The New Times, March 15). The poor synchronisation of traffic lights is one of the main reasons for traffic congestion in the City of Kigali.
Some of the many traffic lights around Kigali city. (File)
Some of the many traffic lights around Kigali city. (File)
Times Reporter