Christian Rudloff

Christian Rudloff
AIT Austrian Institute of Technology | ait · Center of Mobility Systems

PhD

About

50
Publications
15,992
Reads
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518
Citations
Introduction
I work as a mathematician and statistician in the transport community. My research focuses on two main areas. The development and calibration of traffic simulation models, at this point mainly pedestrian simulation models as well as shared space simulation models and the statistical analysis of mobility data. My main focus lies in behavioural analysis of mobility decisions via discrete choice, travel demand and similar questions.
Additional affiliations
September 2012 - October 2013
Massachusetts Institute of Technology
Position
  • Researcher
June 2008 - present
AIT Austrian Institute of Technology
Position
  • Researcher
Description
  • Choice Modelling, Statistical Analysis of mobility data, simulation model calibration.
April 2006 - May 2008
Wirtschaftsuniversität Wien
Position
  • Integrated demand and supply chain management
Education
September 1997 - February 2001
University of East Anglia
Field of study
  • Mathematics
September 1996 - August 1997
University of East Anglia
Field of study
  • Mathematics

Publications

Publications (50)
Article
Transport justice has two essential dimensions: (1) compensating for inequalities in access to mobility, and (2) mitigating the disproportionately burdensome negative consequences of transport. In light of the urgently needed action regarding climate change especially in the transport sector, measures reducing carbon emissions to mitigate the impac...
Article
Full-text available
MATSim is an open-source simulation framework for mesoscopic traffic simulations that has gained popularity in recent years. In this paper, we present a MATSim model for the city of Vienna, with a particular emphasis on the intermodal routing framework used to create agent trips, and the development of a utility function to specify different agents...
Article
Full-text available
When introducing new mobility offers or measures to influence traffic, stated preference (SP) surveys are often used to assess their impact. In SP surveys, respondents do not answer questions about their actual behaviour, but about hypothetical settings. Therefore, answers are often biased. To minimise this hypothetical bias, so-called stated prefe...
Article
Progress in digitalization opens opportunities to capture accurate transportation logistics data and provide advanced decision support, which leads into the question of how to efficiently exploit this progress in order to improve solution quality in transportation services. Here we address this issue in the context of a dynamic and stochastic patie...
Preprint
When introducing new mobility offers or measures to influence traffic, stated preference (SP) surveys are often used to assess their impact. In SP surveys respondents do not answer questions about their actual behavior but about hypothetical settings. Therefore, answers are often biased. To minimise this hypothetical bias, so-called stated preferen...
Conference Paper
A basic assumption of many scientific theories on the topic of decision making is rational behavior. However, due to the low share of sustainable transport modes, rational decision making in freight mode choice based on measurable criteria (e.g. cost and emissions) must be questioned. Previous authors assume the existence of behavioural biases in f...
Conference Paper
Full-text available
Shared Autonomous Electric Vehicles (SAEVs) are expected to enter the transportation market in the upcoming decades. In this paper, we describe the preparation of a MATSim model for Vienna in which we add this new service as a new transportation mode. We simulate different pricing schemes for various SAEV fleet sizes and analyze their impacts. Our...
Conference Paper
The traffic system of urban areas is challenged by commuter traffic at peak periods. Especially motorized individual transport leads to congestion of the main transport axis and associated environmental and noise pollution. From a policy perspective, park-and-ride systems are necessary to ensure that commuters leave the car behind and cover at leas...
Conference Paper
Full-text available
Bike-sharing has developed into an established part of many urban transportation systems. However, new bike-sharing systems (BSS) are still built and existing ones are extended. Particularly for large BSS, location planning is complex since factors determining potential usage are manifold. We propose a semi-automatic approach for creating or extend...
Chapter
Full-text available
Cycling with children is a sensitive topic since people tend to be more careful and risk aware when carrying younger children along on their bikes. The decision whether to cy-cle with children is not only affected by appropriate cycling infrastructure and proficien-cy on a bike, but also depends on the design of the vehicle, its comforts or restric...
Conference Paper
Full-text available
Bike-sharing has developed into an established part of many urban transportation systems. However, new bike-sharing systems (BSS) are still built and existing ones are extended. Particularly for large BSS, location planningis complex since factors determining potential usage are manifold. We propose a semi-automatic approach forcreating or extendin...
Conference Paper
Full-text available
Active forms of mobility are important when it comes to tackling environmental challenges, improving the quality of human health and reducing road-traffic congestion and overcrowding in public transportation. Measures such as an enhancement of infrastructure or promotion through campaigns are regularly informed by mobility surveys which cover demog...
Conference Paper
Full-text available
Travel surveys often serve as the primary input for the creation of traffic simulations models, in particular as the data basis for the estimation of mode choice models. In this paper we investigate the differences of technologically assisted data (TAD) and conventional travel survey data for mode choice modelling. We describe the necessary steps t...
Preprint
Full-text available
During the last decades pedestrian simulation models have become more and more popular for assessing the quality of the design of public transport stations. To accurately reflect space usage and crowding, models for route choice have to be incorporated that can realistically reproduce the routes taken on both an individual and an aggregated level....
Poster
Full-text available
Active forms of mobility are important when it comes to tackling environmental challenges, improving the quality of human health and reducing road-traffic congestion and overcrowding in public transportation. Measures such as an enhancement of infrastructure or promotion through campaigns are regularly informed by mobility surveys which cover demog...
Article
Full-text available
Mobile technologies are improving constantly and there are plenty of online routing services around. While users are willing to try new services and apps, it is hard to retain them as users unless the service meets their expectations straight away. In multi-modal routing, using a generic model might not give appropriate routes both to an environmen...
Poster
Full-text available
Cycling with children is a sensitive topic since people tend to be more careful and risk aware when taking younger children along on their bikes. The decision whether to cycle with children is not only affected by the infrastructure and ability alone, but also depends on the design of the vehicle, the associated comfort or restrictions (e.g. due to...
Conference Paper
Full-text available
European cities and regions strive for energy efficiency to meet the Europe 2020 goals on climate change and energy sustainability. At present, the transport sector is one of the main sources of greenhouse gas emissions due to the dependence on fossil fuels. The switch to renewable energies together with improvements in energy efficiency often caus...
Presentation
Good cycling infrastructure is seen as a prerequisite for a high modal share of cycling. However, while there are studies using stated preference data and small sets of GPS trajectories to evaluate cycling infrastructure and to develop route choice models, there is a gap in applying large GPS data sets for these purposes. In this paper we present s...
Article
Full-text available
Route choice in multimodal networks shows a considerable variation between different individuals as well as the current situational context. Personalization and situation awareness of recommendation algorithms are already common in many areas, e.g., online retail. However, most online routing applications still provide shortest distance or shortest...
Article
Mobile technologies are improving constantly and there are plenty of online routing services around. While users are willing to try new services and apps, it is hard to retain them as users unless the service meets their expectations straight away. In multi-modal routing, using a generic model might not give appropriate routes both to an environmen...
Technical Report
Full-text available
Im Projekt SmartCityRheintal entwickelte das AIT ein agentenbasiertes Verkehrsmodell in MATSim. Dieses deckt das gesamte Bundesland Vorarlberg ab und ist multimodal, berücksichtigt also die Verkehrsmodi Motorisierter Individualverkehr (MIV), Öffentlicher Verkehr (ÖV), Fahrrad und Zufußgehen. Das agentenbasierte Verkehrsmodell diente als Tool zum Te...
Conference Paper
Full-text available
Learning mobility profiles of citizens can play a crucial role in many applications, including traffic demand estimation, urban planning or personalized advertising. In this paper we demonstrate a framework for building and constantly readjusting mobility profiles using smart phone data coupled with manual user input and personalised discrete choic...
Article
Full-text available
In times of increasing travel demand, urban transport systems are under continuous stress. Knowledge of the impact of weather on any given day needs to be obtained for efficient operation of the system. Although it is expected that weather-related impacts will not dominate travel demand (e.g., work trips cannot be easily omitted), trips may be dela...
Article
Full-text available
In times of increasing travel demand urban transport systems are under continuous stress. Knowledge on the impact of weather on any given day needs to be obtained in order to efficiently operate such system. While it is expected that weather related impact will not dominate travel demand (e.g work trips cannot be easily omitted), trips may be delay...
Conference Paper
Full-text available
In times of increasing travel demand urban transport systems are under continuous stress. Knowledge on the impact of weather on any given day needs to be obtained in order to efficiently operate such system. While it is expected that weather related impact will not dominate travel demand (e.g work trips cannot be easily omitted), trips may be delay...
Article
Full-text available
Abstract Over the last years multiple variations of the Social Force model have been proposed. While most of the available force-based models are calibrated on observed human movement data, validation for investigating the model characteristics, e.g. variance in parameter values, is still sparse. We present a novel methodology for validating Social...
Article
Full-text available
Bicycle sharing systems (BSS) are becoming ever more popular all over the world. One of the remaining problems is that the distribution of rides between stations is not uniformly distributed and certain stations fill up or empty over time. These empty and full stations lead to demand for bikes and return boxes that cannot be fulfilled leading to un...
Conference Paper
Full-text available
Advanced routing and navigation incorporating real time traffic information is state of the art - at least for car drivers. The number of cyclists using digital navigation even to reach familiar destinations is increasing with the availability of waterproof smartphones and smartphone mounts. However, for realistic routing and real-time cycling assi...
Article
Full-text available
Shared spaces are being implemented in many countries to deal with safety concerns and traffic flow problems on busy urban streets and street crossings. However, shared space concepts could not be tested before being build so far due to the lack of a functioning microscopic shared space simulation. Lane based car following models, currently used in...
Article
Full-text available
A reluctance to switch to electric vehicles is observed in various countries despite national efforts to promote them. The question of whether electric cars are capable of meeting daily mobility requirements in Germany is investigated. The analysis is based on data from the German Mobility Panel Survey from 1995 to 2010 and the travel survey of 200...
Conference Paper
Multi-agent models for simulating the mobility behavior of the urban population are gaining momentum due to increasing computing power. Such models pose high demands in terms of input data in order to be reliably able to match real world behavior. To run the models a synthetic population mirroring typical mobility demand needs to be generated based...
Conference Paper
Full-text available
A reluctance towards switching to electric cars can be observed in various countries despite the efforts of national programs to promote electric vehicles. This paper investigates, if electric cars are capable of meeting the requirements of daily mobility in Germany. The analysis is based on data from the Mobility Panel Survey Germany from 1995 to...
Chapter
Full-text available
Urban sprawl and the increasing mobility demand cause serious problems for the transport systems of urban areas, in particular during peak hours. Accidents or roadwork sites worsen the situation for transport users. New technical developments in the field of satellite based localization systems interacting with intermodal and interoperable online r...
Conference Paper
Full-text available
We present an innovative extension to routing: intention-oriented routing which is a direct result of combining classical routing-services with Semantic Web technologies. Thereby, the intention of a user can be easily incorporated into route planning. We highlight two use cases where this hybridization is of great significance: neighborhood routing...
Chapter
Pedestrian simulation models are used in a multitude of ways. While model development for Social Force models is quite advanced little is known about how to calibrate a Social Force model such that the parameters are reproducing real life data in many situations. This paper tests different calibration methodologies that were previously used in the...
Article
Demand and procurement planning for consumer electronics products must cope with short life cycles, limited replenishment opportunities and a willingness to pay that is influenced by past prices and decreases over time. We therefore propose the use of an integrated pricing and inventory control model with a two-period linear demand model, in which...
Article
Full-text available
A first step is presented toward a simulation tool for shared space zones, including all three prevailing individual modes of transport: cars, bicycles, and walking. Unlike on conventional roads, the behavior in shared spaces cannot be modeled by following a predefined path and strictly obeying traffic rules because the architectural design allows...
Article
Full-text available
Several models for simulation of pedestrian movement have been proposed in recent decades. These models are primarily used in the planning and evaluation of large pedestrian infrastructures, such as transportation hubs, with a focus to increase comfort and safety for pedestrians. Although the number of proposed simulation models is increasing at a...
Conference Paper
One of the few possibilities to increase the capacity of train lines is to make boarding and alighting more efficient. So far expensive experiments were needed to evaluate the effect of proposed changes to the train setup. This paper shows that a simulation model based on the social force paradigm and calibrated on measured data promises that in fu...
Conference Paper
Full-text available
Abstract In large stations of public transportation high crowd densities can lead to potential safety risks and to unnecessary delays. To assess the actual capacity of potential bottlenecks a deeper understanding on the route choice of pedestrians is of great importance. This paper investigates the factors that influence the route choice of pedestr...
Conference Paper
Full-text available
The Global Positioning System (GPS) has been gaining importance for travel surveys since the 1990s. While it is successfully used to collect accurate information about traveled routes and travel times, only little is known on extracting added information like transport modes and trip purposes. In this paper a system for collecting and profiling com...
Article
Full-text available
In this paper we first show that the gains achievable by integrating pricing and inventory control are usually small for classical demand functions. We then introduce reference price models and demonstrate that for this class of demand functions the benefits of integration with inventory control are substantially increased due to the price dynamics...
Article
Full-text available
In this paper we classify irreducible representations of quasi-simple groups with cyclic Sylow p-subgroup P = 〈g〉 such that (g) has at least one eigenvalue of multiplicity 1.
Article
Full-text available
In this paper we classify irreducible representations of quasi-simple groups with cyclic Sylow p-subgroup P = 〈g〉 such that (g) has at least one eigenvalue of multiplicity 1.

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Projects

Projects (7)
Project
Simulating the environmental and socioeconomic effects of Shared Autonomous Electric Vehicles (SAEVs): the case of Vienna https://www.simsaev.eu/
Archived project
In the exploratory study "ModEL", preparatory work is being carried out for the consideration of various influencing factors in the area of gender and diversity in order to be able to apply precise measures in the future that promote sufficient behaviour in the logistics sector. For this purpose, market areas are defined in which the exact investigation of target group-specific measures is useful in order to initiate a change in behaviour. Furthermore, use cases will be identified, a survey methodology will be developed to disclose the decision-making process and a first pilot survey will be conducted, measures for behavioural change will be outlined and finally RTI potentials will be summarized. A gender expert will be involved in every step of the scientific project to ensure that gender mainstreaming is anchored in the work packages. The core result will be gender-specific findings on the behaviour of different groups of people in the area of modal decisions in the logistics sector.