I'd say they do a pretty good job if they don't have a bunch of wrecks.
We don't need no stinking traffic signals. No accidents but a few near-misses for some pedestrians.
I remember driving in those conditions with a five ton tractor and flatbed or tanker trailer in Viet Nam. The other places were Mumbai and Coimbatore India. The secret to success is to remember there's no such thing as having the right of way. As long as you don't run over anyone you're just fine. If you do run over someone pray they didn't have a cow with them. If you run over people they just go make another. If you run over a cow you're going to pay dearly, possibly end up in jail and become part of an international incident.
It sounds like Benny Hill, except in their weird version.
Ha! Not so OT. I drove my Model T through that intersection on my trip from Melbourne to Moscow. If I remember correctly a homeless person came and sat on my running board at that intersection or the previous one while I waited for the lights to change. I stayed a the nearby famous Ras Hotel which Nelson Mandela once stayed at as a fugitive. Taxis in Addis are either Soviet era Ladas or late 1960s Toyota Corona...love them! Tough driving though in Eithiopia as there are many donkey carts on the main highways...donkeys are unpredictable and can suddenly jump out in front of you...not fun with Model T braking.