Two Lane roads on the inside and 2 lane one way roads to the storages

What are the sizes of roads used?

helps with "stretching out" the traffic.. so there never will be a traffic jam. cause the sand trucks may use that outer road too, and i found, that those squiggly things helped avoiding any backed up roads or so.

can i ask why the squiggly roads

thanks :) its just a little setup for efficient concrete production in Infraspace. Feel free to copy it, if you also play that game.