During recent years, several companies have introduced small autonomous delivery robots and evidenced their technical applicability in field studies. However, a holistic planning framework for routing utilizing these is still lacking. Current literature focuses mainly on logistical performance of using robots, ignoring real world limitations, does not assess the respective impact total costs. I...

In most manufacturing and distribution systems, semi-finished jobs are transferred from one processing facility to another by transporters such as Automated Guided Vehicles, robots and conveyors, and finished jobs are delivered to warehouses or customers by vehicles such as trucks. This paper investigates two-machine flow shop scheduling problems taking transportation into account. The finished...

Long-haul carriers must comply with various safety rules which are rarely taken into account in models and algorithms for vehicle routing problems. In this paper, we consider the rules on truck driver safety during long-haul trips in North America. The problem under study has two dominant features: a routing component that consists in determining the sequence of customers visited by each vehicl...

In this paper we present the solution to a weekly log-truck scheduling problem (LTSP) integrating the routing and scheduling of trucks where all goods are transported in full truckloads. This problem includes aspects such as pick-up and delivery, multiple products, inventory levels, and lunch breaks. The objective is to minimize the overall transportation cost including wait times, and both emp...

We report on the application of operations research to a very complex scheduling and dispatching problem. Scheduling and dispatching are never easy, but the scheduling of concrete deliveries is particularly difficult for several reasons: (1) concrete is an extremely perishable product—it can solidify in the truck if offloading is delayed by a few hours; (2) customer orders are extremely unpredi...

In this paper the authors deal with the scheduling of inbound and outbound trucks to the available inbound and outbound doors at a cross dock facility. They assume that all trucks served at the facility need to meet several deadlines for deliveries and pick-ups and thus request a departure time window from the facility, penalizing the facility operator, on a unit of time basis, if that deadline...

Perencanaan alokasi penumpukan petikemas memiliki pengaruh yang besar untuk meminimalkan waktu sandar kapal dan biaya operasional terminal. Model lapangan bertujuan mengurangi jarak tempuh truk dalam kegiatan muat menyeimbangkan jumlah pada setiap blok. Alokasi belum optimal di Terminal Petikemas Banjarmasin merupakan salah satu permasalahan harus diselesaikan. Dalam upaya penyelesaian tersebut...

Railway yard is the basic composition unit of railways, therefore, the efficiency and quality of railway yard design have a crucial effect on the construction and operation of railways. Plane design is the basis and core of railway yard design, consequently, it is significant to research plane design of railway yard. In this study, through analysis and summary of the research status as well as ...

A truck scheduling problem for container transportation in a local area with multiple depots and multiple terminals including containers as a resource for transportation is addressed. Four types of movements of containers as inbound full, outbound full, inbound empty and outbound empty movements as well as the time windows at both the origin and the destination are considered. The total operati...