Digitala Vetenskapliga Arkivet

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  • 1.
    Arvidsson, Niklas
    Swedish National Road and Transport Research Institute, Society, environment and transport, Traffic analysis and logistics. VTI.
    En förstudie av godscykeln och dess användningsområde: en historisk hybrid och framtida möjlighet för ett hållbart distributionssystem i våra städer2020Report (Other academic)
    Abstract [en]

    The last part of the freight chain is usually the most inefficient, costly and most emission-intensive part of the chain. Fill rates are low, the cost of the last kilometer can in some cases amount to up to one-third of the total cost and the negative effects of transport, emissions and accidents, become extra noticeable in environments where people live. The use of smaller vehicles that are better suited to the assignment is something we intend to investigate further in this report. A simpler analysis of life cycle data for freight bicycles shows that they are many times more environmentally friendly than vans. There are also several companies in Sweden that deliver packages with freight bicycles and that do this with profit. Many of the major transport and logistics companies have already started using these types of vehicles. The fact that freight bikes can usually maintain the same average speed as vans during the day makes the business model interesting. The reason for this is that cargo bikes can get closer to the customer, do not need to circulate to find parking, can take shortcuts and use both the bicycle network and the road network. So, in some circumstances, a van can be replaced with a freight bicycle.

    It is also interesting to study the standardization process that has begun regarding the choice of load carrier. In recent years, we have seen a development in which attempts are made to make the transfer between different vehicles as smooth as possible, for example with a standard removable and stackable mini-container. This could significantly improve the handling, as you can go from handling load carriers rather than many small packages.

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  • 2.
    Arvidsson, Niklas
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Traffic analysis and logistics.
    Weir IV, Howard Twaddell
    TØI, Institute of Transport Economics, Norway.
    Orving, Tale
    TØI, Institute of Transport Economics, Norway.
    Operational performance of light electric freight vehicles in the last mile: two Nordic case studies2024In: International Journal of Physical Distribution & Logistics Management, ISSN 0960-0035, E-ISSN 1758-664XArticle in journal (Refereed)
    Abstract [en]

    Purpose: To assess the introduction and performance of light electric freight vehicles (LEFVs), more specifically cargo cycles in major 3PL organizations in at least two Nordic countries. Design/methodology/approach: Case studies. Interviews. Company data on performance before as well as after the introduction. Study of differing business models as well as operational setups. Findings: The results from the studied cases show that LEFVs can compete with conventional vans in last mile delivery operations of e-commerce parcels. We account for when this might be the case, during which circumstances and why. Research limitations/implications: Inherent limitations of the case study approach, specifically on generalization. Future research to include more public–private partnership and multi-actor approach for scalability. Practical implications: Adding to knowledge on the public sector facilitation necessary to succeed with implementation and identifying cases in which LEFVs might offer efficiency gains over more traditional delivery vehicles. Originality/value: One novelty is the access to detailed data from before the implementation of new vehicles and the data after the implementation. A fair comparison is made possible by the operational structure, area of delivery, number of customers, customer density, type of packages, and to some extent, the number of packages being quite similar. Additionally, we provide data showing how city hubs can allow cargo cycles to work synergistically with delivery vans. This is valuable information for organizations thinking of trying LEFVs in operations as well as municipalities/local authorities that are interested.

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  • 3.
    Kjellsdotter Ivert, Linea
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Traffic analysis and logistics.
    Wehner, Jessica
    Swedish National Road and Transport Research Institute, Society, environment and transport, Traffic analysis and logistics.
    Arvidsson, Niklas
    Swedish National Road and Transport Research Institute, Society, environment and transport, Traffic analysis and logistics.
    Kalantari, Joakim
    Swedish National Road and Transport Research Institute, Society, environment and transport, Traffic analysis and logistics.
    Hedvall, Klas
    Chalmers.
    Energieffektiv sista milen-distribution av dagligvaror genom nya samverkansmodeller2022Report (Other academic)
    Abstract [en]

    E-commerce of groceries brings increased service and availability for consumers, but also challenges for companies that need to adapt their logistics systems to new market needs. Above all, it is the last mile, i.e., the distance from the time orders are picked until they are delivered to the consumer or delivery point, that is affected by increasing e-commerce. Today, these transports are not efficient, neither from a cost perspective nor from an energy-efficiency perspective. 

    The purpose of the feasibility study “Energy-efficient last-mile distribution of groceries through new collaboration models” (ELLA) is to generate new knowledge for the development of logistics solutions that enable energy-efficient last-mile transports in different contexts. Methods used are literature studies, interview studies with nineteen organizations and companies in the grocery sector as well as a workshop with grocery retailers, box suppliers, transporters and researchers. 

    The report identifies nine logistics solutions with great energy-efficiency potential that were categorized into three main groups; 1) transport (i.e. how the transport is organized), 2) delivery (i.e. how the delivery takes place), and 3) vehicle (i.e. which vehicle is used in the delivery). 

    The logistics solutions that are viewed in more detail are: Groupage, micro-terminals, service level adjustments, standardized packaging, delivery point at high-traffic locations, cargo bike, electric truck and “ice cream” truck. The nine logistics solutions have been evaluated using various measures of energy efficiency such as load capacity, degree of filling, km/stop, stop/route and CO2 emissions. The logistics solutions have also been analyzed based on which contexts they are suitable to use in and which actors are needed to implement the solution. 

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  • 4.
    Klar, Robert
    et al.
    Swedish National Road and Transport Research Institute, Society, environment and transport, Traffic analysis and logistics. Department of Science and Technology, Linköping University, Campus Norrköping, Sweden.
    Arvidsson, Niklas
    Swedish National Road and Transport Research Institute, Society, environment and transport, Traffic analysis and logistics.
    Angelakis, Vangelis
    Department of Science and Technology, Linköping University, Campus Norrköping, Sweden.
    Digital Twins' Maturity: The Need for Interoperability2023In: IEEE Systems Journal, ISSN 1932-8184, E-ISSN 1937-9234Article in journal (Refereed)
    Abstract [en]

    Digital twins have gained tremendous momentum since their conceptualization over 20 years ago, as more and more domains discover their value in driving efficiencies and reducing costs, while enabling technologies continue to advance. Originally aimed at product optimization and intelligent manufacturing, the range of applications for digital twins now spans entire complex, often highly interconnected systems such as ports, cities, and supply chains. Despite the increasing demand for sophisticated digital twinning solutions across all domains and scopes, their development is often still constrained by differing definitions, different understandings of their functional scope and design, and a lack of concrete methodology toward implementing a comprehensive digital twinning solution. Although there are already papers that evaluate the capabilities of existing digital twinning solutions on the basis of maturity levels, these usually consider the object to be twinned in isolation and are often domain-specific. With this article we address exactly this gap discussing how interoperability of digital twins can break physical boundaries of an isolated system, enabling system of systems joint optimization. We therefore consider interoperable digital twins to be the most mature twinning platforms, thus, we discuss in detail six digital twin maturity levels, departing from the interrelated contexts of ports, cities, and supply chains. Examples drawn from these domains demonstrate the need for interoperability toward optimizing processes and systems in realistic contexts, rather than in assumed isolation. 

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