same-day delivery

City Logistics: Challenges and Opportunities

  • Martin Savelsbergh
  • Tom Van Woensel
    • Categories Applications - OR and Management Sciences, Production and Logistics, Transportation Tags , , , , , ,

    Today, around 54% of the world’s population lives in urban areas. By 2050, this share is expected to go up significantly. As a result, city logistics, which focuses on the efficient and effective transportation of goods in urban areas while taking into account the negative effects on congestion, safety, and environment, is critical to ensuring … Read more

    The One-Dimensional Dynamic Dispatch Waves Problem

  • Alan L. Erera
  • Mathias A. Klapp
  • Alejandro Toriello
    • Categories Dynamic Programming, Production and Logistics, Transportation Tags , , ,

    We study same-day delivery (SDD) distribution systems by formulating the Dynamic Dispatch Wave Problem (DDWP), which models a depot where delivery requests arrive dynamically throughout a service day. At any dispatch epoch (wave), the information available to the decision maker is (1) a set of known, open requests which remain unfulfilled, and (2) a set … Read more