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Vehicle Routing. Service Delivery in the Field. Clarke-Wright Algorithm. Objective: Create a route that minimizes distance (time) traveled from a depot to several customers. Net savings S ij by linking two locations I and j.
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Vehicle Routing Service Delivery in the Field
Clarke-Wright Algorithm • Objective: Create a route that minimizes distance (time) traveled from a depot to several customers. • Net savings Sij by linking two locations I and j. • Routes can be constrained (e.g. vehicle capacity) or unconstrained.
Steps in C-W Algorithm • Construct a shortest-distance half-matrix. • Assign one round-trip to each location. • Calculate the net savings for each pair of outlying locations, and enter them in a net savings half-matrix. • Enter values for trip indicator T (2 for round trip, 1 for one way, and 0 for no travel) into appropriate cells of the half-matrix. • Identify the cell with the maximum net saving and link the locations provided T>0, locations not already on a route, and other constrains are met.