Research Article

The Effects of the Tractor and Semitrailer Routing Problem on Mitigation of Carbon Dioxide Emissions

Figure 2

In the SA results, (a) the relationship between the tractor quantity and the average loaded-semitrailer number of a route; (b) the relationship between the tractor quantity and the percentage of fuel consumption for tractor running alone.
809135.fig.002a
(a)
809135.fig.002b
(b)