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brianvds (January 19, 2018, 10:54:17 AM):
Many millions (billions?) was spent during the Joburg highway improvement project a few years ago. It mainly added lanes (and gantries). Did it improve the traffic? For a short while, yes, but now it's back to the same old story. I believe this happened all over the world, so by the time they decided on this project the data was there - adding lanes does not alleviate the problem.

I would think that as you add lanes, it actually makes the problem worse and worse, because ever more people pile into the left lane to get off, leading to ever larger pileups.

I have been in that sort of commute in the past, and I have decided: never again. If that is what it takes for me to live in civilization, then civilization is simply not worth it.
BoogieMonster (January 19, 2018, 11:33:33 AM):
Two words: Law Enforcement.

Once again I have to go back to what I saw in the USA: suburban roads that dwarf most SA highways (5-6 lanes) flowing in an orderly fashion. People waiting their turn... mostly... and stragglers being let in to let other traffic flow. Basically it seems the assumption is you're not a bad actor, so things just gel better. But they do have several things SA could do well to emulate:

"Fast lane(s)" on the highway that has a permanent barrier blocking it off from the other lanes (with defined entry and exit points) and you have to pay (via an e-toll tag) to be on it and you have to maintain a minimum speed (or get fined A LOT).

The other was dedicated left-turning (across the traffic) lanes - like this. .... Meaning, oncoming traffic permitting, you can move into the turning lane at speed and all other traffic can flow past without being blocked off because there's a line for the turning lane.

The last is the highest order of genius I've ever seen: Right-on-red. You can treat red lights as a yield if you're turning right. You have no idea how this made traffic flow.

Edit: And "Bypasses", if you're going in the "busy" direction and not getting off at the next interchange, you can skip a whole set of them entirely.


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