I work shifts too and at silly o'clock in the morning when the roads are empty, there's nothing more annoying than sitting at a junction when there's no traffic.

I think you're right about turning left on a red light, it works in the USA except they turn right.

One thing I would change about junctions here is stick in roundabouts at major cross roads where possible. As said previously, there is too much time spent sitting at lights when the road is clear. And traffic lights could be in operation for peak times/rush hour.

They use this system at some roundabouts so why not use it more often.