Analysis of the Supply Chain Project shows that transfer points is not necessary or justified. The major economic factor which influences the effect of distance on rates is the element of cost. In transportation, certain costs are incurred without regard to the actual movement per se.Products delivered by Canbide are classified as low-risk products. Carriers are required to provide connections and construct sidings for delivery of carload shipments to private sidings and to provide "team" tracks for loading and unloading. Switching service for these tracks must be provided on a reasonable basis. As a matter of practice, railroads often organize subsidiary switching and terminal companies, often on a joint basis, to perform these services. Since the firm is small and often closely held, it is not surprising that the organization of the motor carrier is the typically simple line type with a flow of authority from the owner downward through the organization. The flexibility of the trucks also accounts for another substantial advantage, speed. While there is little or no difference in the absolute speed potential of surface vehicles (i.e., the miles per hour capacity of trucks and locomotives are about the same), the motor truck generally provides the shipper with superior service in regard to elapsed time (transit time), which is the ultimate measure of time for the shipper. Transportation service, like many other services or products, is sometimes produced under conditions of common cost.