Horse-and-carriage type roads were very particular. The middle was very soft and the grooves were quite narrow. You just cannot see them anywhere nowadays. I bi

Horse-and-carriage type roads were very particular. The middle was very soft and the grooves were quite narrow. You just cannot see them anywhere nowadays. I bicycled from Finland to Yugoslavia in 1971 often trying to ride on those kind of roads. Occasionally I used old Roman Empire roads. They were "paved" but made of big slippery plates and even more difficult to ride on.