If by my home town, the town where I grew up is meant, an immediate improvement springs to mind.
The town is in Greater London and is a well-known traffic bottle-neck. Mainland Britain is a fairly small island, which was developed with roads and buildings in the days of horses and carts, not cars, bicycles, vans of various sizes and heavy goods vehicles, some of which are known as juggernauts.
The main place where delays arise is a large and complex roundabout controlled by traffic lights. What is needed is a flyover or underpass. The next town (in a different borough) has both. Traffic wishing to continue in the direction of travel and not turn off the major route is taken over or under the other roads. This reduces the number of vehicles having to negotiate a roundabout or cross other roads at junctions.
I have not been to my home town for more than ten years, but it would surprise me if an underpass has been built as extra land would be required to construct the join between the lanes leaving the roundabout and the through traffic. It would require the demolition of a number of buildings in the shopping area of the town. Another possible solution would be to use side streets for traffic changing direction at this roundabout onto or off the north-south route (into and out of central London). Then the buildings could be left standing.
It is possible that the congestion charge, which has been introduced to reduce the number of vehicles entering central London has had an effect on the traffic over ten miles away, but I rather doubt it.
Such projects require a great deal of investment and are not completed overnight. It may be that the planners have considered all the implications of such a scheme including the disruption during construction. It may have been deemed impossible. Now if someone could wave a magic wand and reorganise the roads overnight…
If you could clone one element from another city you’ve visited — a building, a cultural institution, a common street food, etc. — and bring it back to your own hometown, what would it be?