4 ms·

> If the point was the reduce the flow, why wouldn't you make a roundabout? Roundabouts have far higher throughput than junctions with traffic lights.

• kqr 3y ago
  But only because they allow for higher density, not higher speeds, which it seems GP was discussing.
• consp 3y ago
  Not quite, traffic lights have the highest throughput if done properly (by quite a margin), but compared to the US style of lights they do.