^ Exactly! There's an obvious practical matter here. Independent shops and simply all businesses with no exception in towns are screwed without any street to let delivery vehicles run in the city.
To be fair, the Paris town hall sometimes found some pretty ideal solution whenever a street segment would allow it.
Just like this:
https://goo.gl/maps/pKbeqijp9fqSPD2s7
Right lane: delivery vehicles, buses, cabs and bikes.
Left lane: any other vehicle.
But this is not always possible. You need a street that's wide enough to support at least 2, or ideally 3 lanes, as is the case of that segment of the Saint-Martin street.
I picked this street because the configuration of it is quite different elsewhere. Long chunks of it are made up of a single lane, which is a pleasant experience to pedestrians, scooters and tiny stuff of this kind, but rather painful when you have to drive them by car.