The savings matrix shows that route O - C - D - O gives the maximum savings in terms of distance to be travelled (17 km). To service this route 88 units of product have to be carried and this is well within the vehicle's carrying capacity. It would take 5.16 hours to complete this route (2.23 hours driving and 2.93 hours to unload the 88 units). Once this route has been completed, retailers A and B are left awaiting delivery. The O - A - B - O route takes 4.53 hours to complete and can be undertaken within the time and capacity constraint. Indeed, as the data in figure 9.16 shows, both routes can be completed within the same working day.