[wolrah]

> If you believe that adding lanes doesn't reduce congestion, then you must also believe that adding transit doesn't reduce congestion.

The problem with road congestion is the number of personal vehicles inefficiently carrying 1-2 people while taking up a lot of space on the road.

In any situation where the roads would be clogged with personal vehicles an effective transit network will be carrying dozens or even hundreds of people per vehicle in vehicles that may not even be sharing the same lanes and thus can't contribute to road congestion.