28 mph ?
I can just see these things with a line of 50 cars behind them going down an interstate or rural highway.
There is a small set of roads here which cannot be ridden on by slower vehicles. However there is a huge section of roads which are not restricted that way.
Lots of roads have all sorts of vehicles.
Everything from slow push-carts with tiny little engines, motor scooters (Lots of them), rather small trike-things, larger bikes, larger combination vehicles, small cars, utility carts, small trucks, cars, medium trucks, bigger trucks, and a small amount of bicycles and some small amount of other things (which will be growing rapidly). All of which seem constantly to be contesting with each other.
There are some roads where bikes, scooters, are in the outside lanes, cars and trucks in the middle with lots in between. Everyone is going every direction, all the time.
It is really jarring at first. But pretty much everyone goes everywhere. Not a lot of rules, not a lot of police most places, most of the time.
That is how the traffic is. Even weirder is, the bigger the vehicle, the more rights it has.
Which sort of makes sense, but smaller vehicles are not really protected as much as larger vehicles. But they are more manuverable, so the (have to) avoid the busses and trucks.
But everyone is pretty much welcomed onto the roadways, other than the major limited-access roads.
So things just sort of flow. If I understand correctly.