Never mind my question, I can see it on the game map.

Signal Controlled Resource Stations/Warehouses can be very useful when linked to other resource sites and multiple cities.

Thank you for your quick response. I am busy trying to learn how to use the Signal Controlled Stations/Warehouses using the Mexican Scenario. How far away can the Warehouse be and still interact with the City?

You're right. The warehouses near to the cities provide goods automaticaly to that city, but you don't get paid for those goods. And yes, the goods produced in the city are available in those warehouses ;)

Do all of those Warehouses (4 on each side of North Platte) actually allow goods to be used by the main City (North Platte) ? ( I think that you do NOT get PAID for delivery to North Platte though, correct?) Also can you pick up goods produced in North Platte at those Warehouses?