Routes built against the day you actually have
Fixed weekly routes drift out of date the moment volumes, windows, or vehicle availability move. Solving daily against the real order book recovers the distance those assumptions cost.
Routing, load building, and network design solved together rather than in sequence. The cost of a delivery is largely fixed by decisions made before the vehicle is loaded.
Fixed weekly routes drift out of date the moment volumes, windows, or vehicle availability move. Solving daily against the real order book recovers the distance those assumptions cost.
Load building is a packing problem under axle weights, stacking rules, and delivery sequence. Treated as one, the same fleet carries measurably more per trip.
Hub locations, lane structure, and fleet mix are usually inherited rather than chosen. Modelling them exposes what the current shape costs against the one the demand justifies.
Methods: VRP / VRPTW, MILP, column generation, bin packing, network flows