The characteristics of truck runs in this survey, shown in Table 5, are accounted for one week time
period, where :
• leg is a course of truck travel, with origin, destination, and all consecutive segments of route for a
single journey,
• trip is a set of truck travel for some purpose usually including the return,
• fronthaul means the first leg of the truck trip that involved carrying a load or several loads to targeted
destination, while
• backhaul is the return of truck from the targeted destination to the point of origin,
• total fuel use for truck run that comprises of fronthaul and backhaul, either with load or empty for
backhaul trip