[MichaelS]

There is a roundabout with lights at all 4 entrances here in Brisbane. It is on a pretty major roadway that leads to the airport, and is also part of the interchange to the major N-S highway here in Queensland. It is terrible, with massive queues and delays in peak hour. They are spending hundreds of millions of dollars in upgrading it to a multi-level flyover or something (haven't seen the final design).

It is kind of odd that Brisbane seems to be moving in the opposite of Calgary. Here, I get many calls from residents (I work for the Department of Main Roads) wanting to have roundabouts removed and replaced with signalized intersections.