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I think in most cases yes, but some I come across the sheer weight of traffic on the roundabout (at peak times mainly) means that no traffic would be able to join (say at a junction immediately prior to a major one which has 99% of traffic on the roundabout passing it and making the traffic waiting, keep waiting)

Which leads back to: Why is there a roundabout in the first place?

Huuuge roundabouts with traffic lights should really be good old-fashioned crossroads. Those take less space and work fine. Roundabouts tend to be a better solution _if you don't have the constant flow of heavy traffic_.

I agree with the gp: Either a roundabout xor traffic lights.

Hell yes! Marcus Povey for mayor!

This is one of those things that just annoys the hell out of me.

So when can pedestrians cross?

Just add a zebra crossing.

I never understood that either. What is their reasoning behind it?