this post was submitted on 08 Sep 2026
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America will do anything but use roundabouts and they already do anything but public transport when given a logistical traffic problem a toddler could solve.
You been to Hemel Hempstead?
Roundabouts suck ass at peak traffic times because you can get stuck behind an endless convoy if you're coming from the wrong direction.
Green waves mean the people on the main road don't all have to slow down and waste a bunch of fuel (and cause more emissions), but the people on adjoining streets still have a chance to get onto the road they need to get on.
And of course if you don't do proper green wave planning, people get the choice of speeding or waiting at every red. The worst possible option. But if you already have the lights, it's much cheaper to adjust the cycles properly than it is to install tons of roundabouts.
USA has an increasing number of roundabouts.
https://www.youtube.com/watch?v=JD6diGX-Z2c