New insertion and postoptimization procedures for the traveling salesman problem
Operations Research
Very large-scale vehicle routing: new test problems, algorithms, and results
Computers and Operations Research
Engineering Solution of a Basic Call-Center Model
Management Science
The Period Vehicle Routing Problem with Service Choice
Transportation Science
Territory Planning and Vehicle Dispatching with Driver Learning
Transportation Science
Call-Center Labor Cross-Training: It's a Small World After All
Management Science
The Consistent Vehicle Routing Problem
Manufacturing & Service Operations Management
The exact solution of several classes of inventory-routing problems
Computers and Operations Research
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Service quality and driver efficiency in the delivery industry may be enhanced by increasing the regularity with which a driver visits the same set of customers. However, effectively managing a workforce of drivers may increase travel distance, a traditional metric of the vehicle routing problem VRP. This paper evaluates the effect that workforce management has on routing costs, providing insight for managerial decision making. The analysis is presented in the context of the period vehicle routing problem PVRP, an extension of the VRP with vehicle routes constructed to service customers according to preset visit frequencies over an established period of time. We develop models to apply workforce management principles. Through a computational study with standard PVRP test cases and real-world delivery data, we show that multiobjective PVRP models can achieve a balance between workforce management and travel distance goals. With the proper parameters in place, workforce management principles may be successfully applied without sacrificing other operational objectives.