The traffic lights can be programmed by time of day (not sure if they can be done remotely depending on density)

The issue with traffic and cameras arises if they are poorly programmed, eg in Jo'burg you'll find that going down a road with a set of cameras is irritating, you go through a green one, find the other one red.

Ideally, if you are driving down Uhuru Highway or Valley Road, Kenyatta Avenue, you should find successive lights green if you are driving between certain speeds, eg 40kph to 70kph.

Traffic builds up every time it stops or slows to a crawl.

To prevent vandals, we should use the kind of metal gauge that Kenha finds surprising.