Inst. Land- und Seeverkehr (ILS)

140 Items

Recent Submissions
Design of vehicle system dynamics using solution spaces

Eichstetter, Markus (2018)

The automotive industry is looking for an efficient product development process to offer a large diversity of high quality products while reducing development costs. An efficient product development process can be created by shifting many aspects of development into the virtual world. This work describes three contributions to a systematic virtual development process: first, a method to derive ...

Evolution des Verkehrs – der Systemansatz und sein Beitrag zur künftigen Verkehrgestaltung

Heinze, G. Wolfgang ; Kill, H. H. (1989)

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Zukunftskonzept virtuelle Kupplung

Rüsch, Franziska (2018)

Die betriebliche baureihen- und herstellerübergreifende Kuppelbarkeit (Multikuppelbarkeit) von Triebfahrzeugen im Schienenpersonennahverkehr (SPNV) erhöht die betriebliche Flexibilität im Fahrzeugeinsatz und verbessert dessen Wirtschaftlichkeit. Für die Gestaltung eines zukunftsfähigen SPNV gilt die Multikuppelbarkeit daher, insbesondere bei den Eisenbahnverkehrsunternehmen und Aufgabenträgern,...

Nichtlineare Vorhersage kritischer Strukturantworten in irregulärem Seegang

Dudek, Matthias (2018)

Die Durchführbarkeit von Offshore-Operationen hängt von limitierenden Designkriterien wie Absolut- bzw. Relativbewegungen der beteiligten Strukturen ab. Daher müssen vor der Operation, die oft nur ein bis zwei Minuten andauert, der vorherrschende Seegang und die damit einhergehenden Bewegungen exakt analysiert werden. Für das Erreichen größtmöglicher Betriebssicherheit und Wirtschaftlichkeit si...

Large-scale microscopic simulation of taxi services. Berlin and Barcelona case studies

Maciejewski, Michał ; Salanova, Josep Maria ; Bischoff, Joschka ; Estrada, Miquel (2016-03-10)

The paper presents research on large-scale microscopic simulation of taxi services in Berlin and Barcelona based on floating car data collected by local taxi fleets. Firstly, Berlin’s and Barcelona’s taxi markets are shortly described and the demand and supply data obtained from FCD analysed. Secondly, the online taxi dispatching problem formulation for this specific case is given, followed by ...

Integrated charging infrastructure

Daubitz, Stephan ; Kawgan-Kagan, Ines (2015)

Purpose: The aim of this paper is to provide insight into how people assess different charging options in the context of electric mobility and how charging can be integrated into daily activities. The central research question concerns the acceptance of fast charging with direct current up to 200 kWh relative to alternative charging concepts such as inductive charging or battery changes as a pa...

Kurskorrektur – Eine Ortsbestimmung der Raumordnung aus Verkehrssicht

Heinze, G. Wolfgang (2006)

Der veränderte Stellenwert der Raumordnung in Deutschland, das öffentliche Infragestellen ihres Gleichwertigkeitsziels und die Kursänderung der europäischen Regionalpolitik zugunsten des Wachstumsziels von Regionen bieten der Raumordnung die Chance einer überfälligen politischen Kurskorrektur. Im Mittelpunkt dieses Beitrags steht die Diskrepanz zwischen sektoralen Entwicklungen und ihrer tradit...

Lösungsstrategien des Verkehrswachstums als Optionen der Verkehrswirtschaft

Heinze, G. Wolfgang (1992)

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Towards an Agent-based, Integrated Land-use Transport Modeling System

Ziemke, Dominik ; Nagel, Kai ; Moeckel, Rolf (2016)

This paper reports on initial steps of an integration of the microscopic land-use simulation system SILO (Simple Integrated Land- Use Orchestrator) and the agent-based transport simulation system MATSim (Multi-Agent Transport Simulation). It is shown how information can be transferred from the land-use model to the transport model in an agent-oriented fashion and how MATSim can be used as a tra...

Braess's Paradox in an Agent-based Transport Model

Thunig, Theresa ; Nagel, Kai (2016)

Braess's paradox states that adding a link to the network can increase total travel time in a user equilibrium. In this paper, Braess's paradox is analyzed in the agent-based transport simulation MATSim. It can be observed, that two different types of the paradox occur: In the absence of spill back effects, the delay per agent caused by adding a new link is bounded, i.e. the delay per agent wil...

Agent-based Congestion Pricing and Transport Routing with Heterogeneous Values of Travel Time Savings

Kaddoura, Ihab ; Nagel, Kai (2016)

An existing agent-based simulation framework and congestion pricing methodology is extended towards a consistent consideration of non-linear, user- and trip-specific values of travel time savings (VTTS). The heterogeneous VTTS are inherent to the model and result from each agent's individual time pressure. An innovative approach is presented which accounts for the non-linear, user- and trip-spe...

Simulation of City-wide Replacement of Private Cars with Autonomous Taxis in Berlin

Bischoff, Joschka ; Maciejewski, Michał (2016)

Autonomous taxi (AT) fleets have the potential to take over a significant amount of traffic handled nowadays by conventionally driven vehicles (CDV). In this paper, we simulate a city-wide replacement of private cars with AT fleets of various sizes. The simulation model comprises microscopic demand for all private car trips in Berlin (including incoming and outgoing traffic), out of which the i...

An Elegant and Computationally Efficient Approach for Heterogeneous Traffic Modelling Using Agent Based Simulation

Agarwal, Amit ; Zilske, Michael ; Rao, K. Ramachandra ; Nagel, Kai (2015)

For developing nations, where mixed traffic conditions prevail, it becomes necessary to develop a heterogeneous traffic flow model which is able to model all vehicle types of different static and dynamic characteristics and equally efficient in computational performance. For this purpose, in this study, an agent based framework is used which uses a queue model in its mobility simulation. In fir...

Agent-based Simultaneous Optimization of Congestion and Air Pollution: A Real-World Case Study

Agarwal, Amit ; Kickhöfer, Benjamin (2015)

The exclusion of external costs from the behavioral decision making process of individuals yields travel demand beyond the system optimum which implies inefficiencies in the transport system. The present study investigates the effect of congestion optimization on emissions levels and vice versa while considering heterogeneity in individual attributes and choice behavior. In consequence, the res...

Why closing an Airport May not Matter – The Impact of the Relocation of TXL Airport on the Bus Network of Berlin

Neumann, Andreas (2015)

This paper investigates the closure of TXL airport and its impact on the bus network of Berlin. The results of the scenario are based on a co-evolutionary algorithm for public transit network design. The algorithm is integrated in a multi-modal multi-agent simulation. In the simulation, competing minibus operators start exploring the public transport market offering their services. With more su...

Seepage of Smaller Vehicles under Heterogeneous Traffic Conditions

Agarwal, Amit ; Lämmel, Gregor (2015)

In the direction of complex heterogeneous traffic modeling, the present study proposes a model to simulate the behavior of smaller vehicles in the congested regime called seepage action. As the name suggests, in congested part of links, smaller vehicles like motorbikes and bikes do not stop at the end of queue. Instead, they move continuously across the gaps between the stationary congested veh...

A Simulation-based Approach for Constructing All-day Travel Chains from Mobile Phone Data

Zilske, Michael ; Nagel, Kai (2015)

The purpose of this work is to investigate replacing travel diaries with sets of call detail records (CDRs) as inputs for an agent-oriented traffic simulation. We propose constructing an agent population directly from a CDR dataset and fusing it with link volume counts to reduce spatio-temporal uncertainty and correct for underrepresented traffic segments. The problem of finding a set of travel...

Wollen wir Europa wirklich?

Heinze, G. Wolfgang (1987)

Man denkt an Friedrich List: an Verkehrsintegration, die Vergröße-rung eines Wirtschaftsraumes und hemmenden Zunftgeist. Auch jetzt wankt eine betagte Marktordnung. 56 Jahre alt und mit großen Verdiensten in schweren Zeiten. Aber es gehört zum Schicksal von Festungen, durch neue Techniken zu Belastungen zu werden und als Museen, Depots und Haftanstalten zu enden. Wie also lauten 1987 die Standa...

Benchmarking minimum passenger waiting time in online taxi dispatching with exact offline optimization methods

Maciejewski, Michał (2014)

This paper analyses the use of exact offline optimization methods for benchmarking online taxi dispatching strategies where the objective is to minimize the total passenger waiting time. First, a general framework for simulating dynamic transport services in MATSim (Multi-Agent Transport Simulation) is described. Next, the model of online taxi dispatching is defined, followed by a formulation o...

Multi-agent transport simulations and economic evaluation

Nagel, Kai ; Grether, Dominik ; Beuck, Ulrike ; Chen, Yu ; Rieser, Marcel ; Axhausen, Kay W. (2008)

Tolls are frequently discussed policies to reduce traffic in cities. However, road pricing measures are seldom implemented due to high investments and unpopularity. Transportation planning tools can support planning authorities by solving those problems if they take into account the following aspects: – Demographic attributes like income and time constraints – Time reactions to the policy – ...