Zoekresultaten

Logistics drivers and barriers in urban agriculture

Although urban agriculture as a way to come to sustainable urban food systems can be questioned and we have to be aware not falling into a ‘local trap’ regarding its benefits (Born & Purcell, 2006), initiatives for urban agriculture emerge all over the world. Some of these primarily focus on achieving social and educational goals while others try to become an (high tech) alternative to existing food supply chains. Whichever the goals of urban agriculture, in practice many of these initiatives have difficulties in their (logistics) operations. Research on urban agriculture and local‐for‐local food supply chains mainly focuses on environmental and economic benefits, alternative production techniques, short food supply chains (logistics infrastructure) or socio‐economic benefits of urban agriculture. So far, the alignment of urban agriculture goals with the chosen logistics concept – which includes more aspects than only infrastructure – has not gained much attention. This paper tries to fill this gap through an exploration of urban agriculture projects – both low and high tech – from around the world by using the integrated logistics concept (Van Goor et al., 2003). The main question to be answered in this paper is: to what extend can the integrated logistics concept contribute to understanding logistics drivers and barriers of urban agriculture projects? To answer this question, different urban agriculture projects were studied through information on their websites and an internet based questionnaire with key players in these projects. Our exploration shows that the ILC is a useful tool for determining logistics drivers and barriers and that there is much potential in using this concept when planning for successful urban agriculture projects.

Different charging strategies for electric vehicle fleets in urban freight transport.

The transition from diesel-driven urban freight transport towards more electric urban freight transport turns out to be challenging in practice. A major concern for transport operators is how to find a reliable charging strategy for a larger electric vehicle fleet that provides flexibility based on different daily mission profiles within that fleet, while also minimizing costs. This contribution assesses the trade-off between a large battery pack and opportunity charging with regard to costs and operational constraints. Based on a case study with 39 electric freight vehicles that have been used by a parcel delivery company and a courier company in daily operations for over a year, various scenarios have been analyzed by means of a TCO analysis. Although a large battery allows for more flexibility in planning, opportunity charging can provide a feasible alternative, especially in the case of varying mission profiles. Additional personnel costs during opportunity charging can be avoided as much as possible by a well-integrated charging strategy, which can be realized by a reservation system that minimizes the risk of occupied charging stations and a dense network of charging stations.

Exploring criteria for tendering for sustainable urban construction logistics

A large share of urban freight in cities is related to construction works. Construction is required to create attractive, sustainable and economically viable cities. When activities at and around construction sites are not managed effectively, they can have a negative impact on the cities liveability. Construction companies implementing logistics concepts show a reduction of logistic costs, less congestion around the sites and improved productivity and safety. The client initially sets the ‘ground rules’ for construction in the tendering process. This paper explores how tendering for construction projects can support sustainable urban construction logistics. We explore the potential for tendering construction projects, by both public and private clients, for sustainable urban construction logistics and we present a conceptual framework for specifying ‘logistics quality’ as a quality criterion for EMAT (Economically Most Advantageous Tender). Our exploration results in questions for further research in tendering for sustainable urban construction logistics.

The value of FM for a healthy urban environment

Curbing urban logistics - the interactions between urban logistics and spatial planning.