I will also propose separating transport planes. There is no excuse for mixing cars and pedestrians in an inner city. I see no viable excuse for traffic lights

I will also propose separating transport planes. There is no excuse for mixing cars and pedestrians in an inner city. I see no viable excuse for traffic lights and forcing petrol-burning vehicles to idle. All car traffic that crosses with living spaces should be in tunnels etc, and all flow controlled as in highway entrance/exits and roundabouts, etc.