Cars speeding along PV in the late evening has always been a problem, so I would not argue with the placement of chicanes along the road.

But I do not want drivers concentrating on manoeuvring their cars at a crossing point.

I do not understand why a pelican crossing is thought expensive - in the 60's the computer to control it may well have been the size and cost of a house but today would be cheaper and smaller than the bulbs.

They are just metal poles with lights.