@inproceedings{anderluh_cargo_2022, address = {Graz}, title = {Cargo {Bikes} for {Sustainable} {Last} {Mile} {City} {Logistics}}, copyright = {CC-BY}, isbn = {978-3-85125-932-2}, url = {https://openlib.tugraz.at/conference-proceedings-of-the-20th-sts-conference-graz-2022-critical-issues-in-science-technology-and-society-studies-24-may-2022-2022}, doi = {10.3217/978-3-85125-932-2-02}, booktitle = {Conference {Proceedings} of the 20th {STS} {Conference} {Graz} 2022, {Critical} {Issues} in {Science}, {Technology} and {Society} {Studies}}, publisher = {Verlag der Technischen Universität Graz}, author = {Anderluh, Alexandra and Nolz, Pamela}, year = {2022}, note = {Projekt: EUDRES}, keywords = {Institut für Mobilitätsforschung, Open Access, Vortrag, Wiss. Beitrag, peer-reviewed}, pages = {21--33}, } @misc{anderluh_meet_2019, address = {Nantes}, type = {Invited {Talk}}, title = {A {Meet} and {Regret} {Heuristic} for the {Dynamic} {Vehicle} {Synchronization} {Problem} with {Soft} {Time} {Windows} and {Pickup} and {Delivery} {Requests}}, abstract = {Cargo bikes as environmentally friendly mode of transport gain increasing importance in urban freight delivery. This is not only due to greenhouse gas emissions and other harmful pollutants like particulate matters or nitrous oxides, but also due to increasing congestion in urban areas. Nevertheless, route optimization models that take cargo bike specific issues into account are rare. Therefore, we deal with a dynamic vehicle routing problem which considers (1) a mixed fleet consisting of cargo bikes and electric vans which start and end their tours at a micro-hub, (2) time windows at customers, (3) pickup and delivery constraints and (4) potential synchronization between cargo bikes to transship goods. This synchronization aspect stems from discussions with cargo bike delivery companies, who include such synchronized meetings between drivers manually, whenever an order has to be transported from the area of one driver into the area of another driver. The problem is formulated as a mixed integer linear program and small instances are solved to optimality by using CPLEX. For realistic instance sizes a metaheuristic based on a neighborhood search is developed. The generated test instances are based on realistic locations for customers, micro-hubs and meeting points for synchronized meetings in Vienna. Preliminary results for small instances show the impact of parameter values on the number of synchronizations.}, language = {EN}, author = {Anderluh, Alexandra and Biesinger, Benjamin and Nolz, Pamela and Turan, Belma}, year = {2019}, keywords = {Center for Sustainable Mobility, Extern, Wiss. Beitrag, peer-reviewed}, } @article{fredriksson_creating_2021, title = {Creating stakeholder awareness in construction logistics by means of the {MAMCA}}, volume = {11}, copyright = {Open Access}, issn = {25902520}, url = {https://linkinghub.elsevier.com/retrieve/pii/S259025202100012X}, doi = {https://doi.org/10.1016/j.cacint.2021.100067}, language = {en}, urldate = {2021-05-25}, journal = {City and Environment Interactions}, author = {Fredriksson, Anna and Janné, Mats and Nolz, Pamela and de Radiguès de Chennevière, Philippine and van Lier, Tom and Macharis, Cathy}, month = aug, year = {2021}, keywords = {Institut für Mobilitätsforschung, peer-reviewed}, pages = {100067}, } @misc{anderluh_time_2016, address = {Nantes}, title = {Time uncertainties in a city distribution scheme with synchronization}, abstract = {Freight distribution within a city has to face a wide variety of requirements and difficulties with time uncertainty amongst them. Especially, when looking at a complex distribution scheme with numerous synchronizations between different types of vehicles, the delay of one vehicle may cause delays of other vehicles as well. Therefore, we investigate the influence of time uncertainties on such a distribution scheme by a Monte Carlo Simulation approach. We first solve the Vehicle Routing Problem with synchronization constraints under deterministic assumptions. Then we iteratively evaluate the robustness of the solution using the Monte Carlo Simulation, and use a relocation operator to increase the robustness of the solution. Our algorithm generates a Pareto frontier of solutions based on cost and robustness, and can therefore be used to obtain solutions that are executable in practice. Therefore, the result of our algorithm can give planners an additional decision support.}, language = {EN}, author = {Anderluh, Alexandra and Larsen, Rune and Hemmelmayr, Vera and Nolz, Pamela}, year = {2016}, keywords = {Center for Sustainable Mobility, Extern, Wiss. Beitrag}, } @misc{anderluh_synchronizing_2015, address = {Vienna}, title = {Synchronizing vans and cargo bikes in a city distribution network}, abstract = {Growing urbanization causes - amongst other things - a constantly increasing amount of freight transportation in cities, which is still mainly performed by conventional vans and trucks. These modes of transport produce a variety of problems like road congestion, nuisance and pollution. Nevertheless bringing goods to residents is also a necessity to maintain a good quality of life within the city. Sustainable concepts of city distribution networks are one way of mitigating difficulties of freight services. Our aim is to efficiently organize the distribution of goods in cities by consolidating the transport requirements of different stakeholders and using environmentally friendly transport modes in inner-city areas. Therefore, we develop a routing scheme with synchronization between cargo bikes and vans to fulfill this purpose. The solution method we developed is based on heuristic and exact concepts, resulting in a fast approach which produces good feasible solutions. We use test instances, which are based on the Solomon instances, as well as a real-world Viennese test instance, where travel times are based on Floating Car Data from Viennese taxi drivers. Besides, to get more robust solutions in a real-world scenario we use a Monte Carlo Simulation approach to tackle stochastic service times at the customers by a critical path method. The results of our algorithm illustrate the costs caused by the need to synchronize vans and cargo bikes and can therefore give planners a decision support in using such a more sustainable kind of freight distribution in a city.}, language = {EN}, author = {Anderluh, Alexandra and Larsen, Rune and Hemmelmayr, Vera and Nolz, Pamela}, year = {2015}, keywords = {Center for Sustainable Mobility, Extern, Wiss. Beitrag}, } @misc{anderluh_performance_2017, address = {Amsterdam}, title = {Performance of a {Deterministic} 2e-{VRP} with {Synchronization} in a {Real} {Life} {Situation}}, abstract = {Two-echelon Vehicle Routing Problems (2e-VRP) are hard to solve, especially when temporal and spatial synchronization constraints are taken into account. We have used a deterministic solver to handle such a problem in a city logistics setting within a reasonable amount of computational time. However, in the real world, such problems are affected by uncertainties. Especially travel time uncertainties may have a great influence on the solution, because a vehicles\&\#8217; delay can propagate to a number of other vehicles due to synchronization requirements. In this work, we investigate which insights we can gain from deterministic solutions that are applied in a stochastic environment. Therefore, we use scenarios based on lognormally distributed travel times to evaluate a deterministic solution under effects of stochasticity. Based on this information we reoptimize the solution in three different ways to decrease the cost under stochasticity. Furthermore, we examine the influence of time dependent travel times in the solution process for a realistic test instance of the city of Vienna. First results show that restructuring the solution can decrease stochastic cost without deteriorating the deterministic solution.}, language = {EN}, author = {Anderluh, Alexandra and Larsen, Rune and Hemmelmayr, Vera and Nolz, Pamela}, year = {2017}, keywords = {Extern, Wiss. Beitrag}, } @misc{anderluh_optimization_2014, address = {Barcelona}, title = {Optimization of a {Two}-{Echelon} {City} {Distribution} {Network} with {Cargo} {Bikes}}, abstract = {In our research project we focus on sustainable inner city goods delivery of single companies. We create a two echelon vehicle routing problem, where goods are delivered from the company depot on the outskirts by vans to customers, who are located outside the city center, and to satellites, where goods are transshipped to cargo bikes which deliver goods to customers located in the city center. Satellites are considered either as small storage depots (for our comparison model) or as pure transshipment points without storage options, where synchronization between vans and cargo bikes is needed.}, language = {EN}, author = {Anderluh, Alexandra and Hemmelmayr, Vera and Nolz, Pamela}, year = {2014}, keywords = {Center for Sustainable Mobility, Extern, Wiss. Beitrag}, } @misc{anderluh_multi-objective_2015, address = {Vienna}, title = {Multi-objective synchronized transportation for inner city freight deliveries}, abstract = {The undeniable fact of increasing urbanization combined with the looming threats of climate change constitute the current challenges in city logistics. Supplying citizens with all necessary goods without deteriorating the quality of life in a city is difficult to accomplish. Therefore, we investigate the use of a more sustainable mode of transport, cargo bikes, in inner city delivery. We develop a two echelon routing scheme with synchronization of vans and cargo bikes. In our model we do not only focus on the mere economic objective to minimize monetary costs. Besides this economic objective we take into account the environmental objective expressed by emission costs and the social objective which is included for example by costs for traffic accidents and health risks induced by traffic. So we can include factors of all three pillars of sustainability in our optimization model. A combination of heuristic and exact methods is used to solve this NP-hard problem. We are going to present preliminary results for a test instance from Vienna. These results illustrate the influence of these types of costs and can therefore give planners a decision support in using such a more sustainable kind of freight distribution in a city.}, language = {EN}, author = {Anderluh, Alexandra and Theodor, Crainic and Hemmelmayr, Vera and Nolz, Pamela}, year = {2015}, keywords = {Center for Sustainable Mobility, Extern, Wiss. Beitrag}, } @misc{anderluh_gratzl_2021, address = {Online Event}, type = {Vortrag mit {Diskussion}}, title = {Grätzl \& {Hub} - {Vernetzte} {Radlogistik} mit sozialem {Mehrwert}}, url = {https://www.damenlogistikclub.com/gelungener-1-dlc-online-stammtisch-graetzl-hub/}, author = {Anderluh, Alexandra and Nolz, Pamela and Hauser, Beate}, year = {2021}, note = {Projekt: Inns'Paket}, keywords = {Center for Sustainable Mobility, Institut für Mobilitätsforschung, Wiss. Beitrag}, } @misc{anderluh_bimodal_2015, address = {Glasgow}, title = {Bimodal synchronized transportation for inner city freight deliveries}, abstract = {Increasing urbanization combined with the looming threats of climate change constitute the current challenges in city logistics. Supplying citizens with all necessary goods without deteriorating the quality of life is difficult to accomplish. Therefore, we investigate the use of a more sustainable mode of transport, cargo bikes, in inner city delivery. We develop a two echelon routing scheme with synchronization of vans and cargo bikes. In our model the city is divided into three zones: the city center, the outer districts, and the so-called 'grey zone' marking the border between the city center and the outer districts. We investigate two different distribution policies and evaluate them according to the objective function comprising economic costs, emission costs and social costs, such as nuisance or traffic jam. The first policy is to assign all customers in the city center to cargo bikes and all customers in the outer-city districts to vans. In the second policy customers located in the 'grey zone' can be assigned either to vans or to cargo bikes while fulfilling all customer requests. A combination of heuristic and exact methods is used to solve this NP-hard problem. We are going to present preliminary results for a test instance from Vienna comparing the different distribution policies. These results illustrate the various kinds of costs and can therefore give planners a decision support in using such a more sustainable kind of freight distribution in a city}, language = {EN}, author = {Anderluh, Alexandra and Crainic, Teodor and Hemmelmayr, Vera and Nolz, Pamela}, year = {2015}, keywords = {Center for Sustainable Mobility, Extern, Wiss. Beitrag}, } @misc{hemmelmayr_lastenradlogistik_2017, address = {Vienna}, title = {Lastenradlogistik}, language = {DE}, publisher = {Ö1}, author = {Hemmelmayr, Vera and Anderluh, Alexandra and Nolz, Pamela}, year = {2017}, keywords = {Extern}, }