ABSTRACT The authors review the literature on last mile delivery logistics within commercial and humanitarian supply chains from 2010 to the end of 2021. The scope of the last mile, including last mile logistics, last mile distribution, and last-mile mile delivery, is covered. A unifying terminology of the major concepts in this field and a bibliometric analysis are provided. Based on the analysis, the authors further classify and discuss the literature into three clusters: humanitarian relief, commercial logistics, and emerging technologies. Within each generated cluster, research gaps and current trends are identified. Future research directions are suggested based on this literature review.

Freight last mile delivery: a literature review

Facing uncertain and dynamic demands over different days, logistics companies need to adopt adaptive solutions for the last-mile delivery. Meanwhile, one of the major barriers for implementing vehicle routing problem (VRP) algorithms in real world dispatching systems is the stability of delivery driver’s routes and schedules. To establish a theoretically sound and practically useful solution framework, this paper aims to optimize robust and consistent space-time paths for the multi-day VRP by providing daily schedules with limited variations from the master schedule. A multi-commodity network flow-based optimization model is proposed to minimize generalized transportation costs and the daily deviation of day-dependent space-time paths among demand analysis zones. Lagrange relaxation (LR) methods and alternating direction method of multipliers (ADMM) are used to handle complex side constraints. Experiments on illustrative networks and Beijing delivery network are developed to demonstrate the effectiveness of the proposed method.

Finding robust and consistent space-time delivery paths for multi-day vehicle routing problem*

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Finding robust and consistent space-time delivery paths for multi-day vehicle routing problem*