signalised

The plan is for 85% of the signalised intersections in the top 75 metro areas.

The other issue in the UK is massive signalised roundabouts used for junctions where traffic volumes clearly justify a proper grade separated junction like a stack, purely to penny pinch.

There are around 400k signalised intersections in the US out of the 15 million intersections total.

Wide segregated routes, fully signalised at intersections so turning traffic doesn't cross the cycle lane, etc.

That's around 2.5% of intersections if you assume every signalised intersection will be included.

I remember seeing 1/3 of fatalities involved a signalised intersection, although in fairness I can't find an international comparison.

Also, those big signalised roundabout are terrible for pedestrians.

>[Frank] Blackmore pursued this discovery, noting that the design was also superior to signalised junctions, following a Peterborough experiment where an extra 1,000 vehicles could be handled every hour by a new small roundabout at a previously signalised T-junction.

If they roll this out to every single signalised intersection in the US (which isn't part of the plan but likely will eventually happen some time after the plan has completed), that works out to less than 3 billion USD.