Daniel Krajzewicz

Daniel Krajzewicz
German Aerospace Center (DLR) | DLR · Institute of Transport Research

Dipl.-Inf.

About

155
Publications
87,685
Reads
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6,312
Citations
Citations since 2017
35 Research Items
4098 Citations
20172018201920202021202220230200400600800
20172018201920202021202220230200400600800
20172018201920202021202220230200400600800
20172018201920202021202220230200400600800
Additional affiliations
March 2015 - present
German Aerospace Center (DLR)
Position
  • scientific coworker
June 2001 - February 2015
German Aerospace Center (DLR)
Position
  • scientific coworker

Publications

Publications (155)
Article
Full-text available
Urban planning has a crucial role in helping cities meet the United Nations’ Sustainable Development Goals and robust datasets to assess mobility accessibility are central to smart urban planning. These datasets provide the information necessary to perform detailed analyses that help develop targeted urban interventions that increase accessibility...
Poster
The DLR project ELK (EmissionsLandKarte) aims at the compilation of consistent three- and four-dimensional emission inventories of gases and particles for the transportation sectors, including land transport, shipping and aviation, for the year 2019. This will be complemented with the spatially and temporally resolved indirect emissions of the tran...
Conference Paper
Es wurde eine kurze Zusammenfassung zu Methoden des Verkehrsmonitorings vorgestellt.
Conference Paper
Es wird ein Überblick über die Auswirkungen der Einführung von Tempo 30-Zonen gegeben.
Article
Full-text available
Cities demand urgent transformations in order to become more affordable, livable, sustainable, walkable and comfortable spaces. Hence, important changes have to be made in the way cities are understood, diagnosed and planned. The current paper puts urban accessibility into the centre of the public policy and planning agenda, as a transferable appro...
Conference Paper
The aim of urban development strategies to make cities safe, resilient and sustainable is directly intertwined with mobility concepts. While benefits of active mobility (walking and cycling) as well as access to public transport are generally well-recognised, in planning practise and concepts, urban development is frequently taking place without co...
Article
Städte sind der Lebensraum der Zukunft. Doch wie können sie angesichts hoher Belastungen durch immer mehr Menschen, Verkehr und Emissionen auf Dauer lebenswerter werden? Was benötigen Städte, damit Menschen darin gut arbeiten, leben und sich bewegen können? Wie können urbane Räume und urbane Mobilität nachhaltig und zukunftsfähig gestaltet werden?...
Article
Cities are the habitat of the future. However, how can they become more liveable over the long term given the stresses resulting from increasing numbers of people, traffic and emissions? What do cities need so that people can work, live and move well in them? How can urban spaces and urban mobility be designed to be sustainable and fit for the futu...
Conference Paper
Full-text available
Intra-cell travel is a difficult topic in zone-based travel demand models. In the past, different strategies were applied to approximate the average intra-cell distances by using zone size, diameter, distances to neighbors and other techniques. In this work we examine a new approach which uses address coordinates and a high performance routing prog...
Article
Full-text available
In Deutschland werden mit dem Pkw täglich fast 30 Mio. Fahrten unter 2 km zurückgelegt. Weitere rund 30 Mio. Pkw-Fahrten sind unter 5 km lang. Im Sinne einer nachhaltigen, städtischen Mobilität gilt es die Frage zu beantworten, wie bzw. mit welchen alternativen Verkehrsmitteln diese kurzen Strecken zurückgelegt werden könnten. Als ein Lösungsansatz...
Article
Full-text available
Intra-cell travel is a difficult topic in zone-based travel demand models. In the past, different strategies were applied to approximate the average intra-cell distances by using zone size, diameter, distances to neighbors and other techniques. In this work we examine a new approach which uses address coordinates and a high performance routing prog...
Article
Cities offer a wide range of different mobility options, including a dense public transport network and good conditions for walking and cycling. They provide good basic requirements for using and combining different modes of transport in people’s everyday mobility in a flexible, individual and situational way. In larger cities in particular, interm...
Article
Full-text available
What is the maximum detour for ride pooling that is accepted from the passengers’ point of view? We address this question by determining the accepted detour of conventional public line transport, which is being accepted by its passengers. This is done using the Google Maps Routing application programming interface (API) for analyzing the travel tim...
Conference Paper
This study uses accessibility measures to assess the quality of infrastructure supply (schools, parks, public transport stops in the regarded cases) and the performance of the transportation system in urban areas, based on objective, quantitative values. Within the scope of this work the methodology is applied to the city of Berlin and Mexico City...
Article
Erreichbarkeitsmaße verschieben den Fokus der Betrachtung des Mobilitätsangebots auf die Verteilung der Aktivitäten im Raum und die Möglichkeiten des Erreichens dieser mittels verschiedener Verkehrsträger und -modi. Sie werden als Paradigmenwechsel zugunsten einer umweltfreundlichen Mobilität angesehen. Doch werden Erreichbarkeitsmaße oft mit kompl...
Conference Paper
Full-text available
The introduction of automated vehicles in the transport system is widely expected to have significant impact on traffic flow and safety, mobility behavior, car ownership and modal usage. Not only the replacement of conventional passenger cars by automated ones but also other forms of mobility offers are being discussed, such as the introduction of...
Conference Paper
Full-text available
Intermodality is the combination of different modes of transport along a single, seamless trip. It is assumed to reduce the amount of emissions generated by transport and being healthier for the users than conventional monomodal trips using passenger cars due to incorporating active modes of transport. In parallel, it promises to be competitive wit...
Article
Full-text available
Intermodality is the combination of different modes of transport along a single, seamless trip. It is assumed to reduce the amount of emissions generated by transport and being healthier for the users than conventional monomodal trips using passenger cars due to incorporating active modes of transport. In parallel, it promises to be competitive wit...
Article
The introduction of automated vehicles in the transport system is widely expected to have significant impact on traffic flow and safety, mobility behavior, car ownership and modal usage. Not only the replacement of conventional passenger cars by automated ones but also other forms of mobility offers are being discussed, such as the introduction of...
Conference Paper
his conference contribution discusses the reasonable creation of dynamic routes of Demand-Responsive Transport (DRT). The term DRT describes responsive transport systems that waive fixed stops and predetermined timetables and react dynamically to specific and spontaneous transport demands of passengers. One of the main characteristics of DRT is tha...
Article
Full-text available
Contour accessibility measures form a set of performance indicators used to value a location by the amount of accessible activities, places, or space within certain time or distance limits. They are used for evaluating a region's activity potential taking the connectivity to its surroundings into regard and act as input data for land use planning m...
Article
Full-text available
Microscopic travel demand models take the characteristics of every individual person of the modelled population into account for computing the travel demand for the modelled region. Car sharing is an old concept, but the combination of a car sharing fleet parked in a public space with smartphone services to find available cars nearby offers a new m...
Conference Paper
Cities offer a wide range of different mobility options, including a dense public transport network and good conditions for walking and cycling. They provide good circumstances for people for using and combining different modes of transport in their everyday mobility in a flexible, individual and situational way. Particularly in larger cities, inte...
Article
Full-text available
Decisions concerning household car ownership and the corresponding usage by the household members have significant implications on vehicle usage, fuel consumption and vehicle emissions. In this context, long-term and short-term choices which are strongly interrelated with one another play an important role. The long-term aspects involve the number...
Conference Paper
The buildup of electromobility necessitates strategies for deploying charging stations that match demand and allocate them in space. This paper presents a fine-grained approach for determining the charging needs and allocating the according charging infrastructure using the results of an agent-based traffic demand model. The usage of a fine-grained...
Article
Stopping and accelerating at traffic lights is one of the main contributing factors to vehicular emissions in urban environments. The work in this paper demonstrates a generic guideline for minimizing CO2 emissions at traffic lights. This was done using an adaptive control, which uses a cost function for optimization, rather than network-specific c...
Conference Paper
Full-text available
Verkehrsnachfragemodelle benötigen detaillierte Informationen zur Bevölkerung im Untersuchungsgebiet. In dem vorliegenden Artikel werden verschiedene Methoden zur Erzeugung synthetischer Bevölkerungen vorgestellt und hinsichtlich ihrer Datenanforderungen sowie ihrer Ergebnisqualität und ihrer Einsetzbarkeit besprochen. Das Hauptaugenmerk liegt dabe...
Conference Paper
Cities are growing, ways of life and work are changing, people are increasingly mobile and interconnected – the urban population is constantly moving. Traffic congestion, emissions and increasing demand for parking space are among the consequences of these developments and confront society with new challenges. Especially in larger cities, flexible...
Article
Full-text available
Microscopic travel demand models take the characteristics of every individual person of the modeled population into account for computing the travel demand for the modeled region. The real world mobility of individuals strongly depends on the specific available car, if any. However, mode choice models usually take a standard average car as referenc...
Article
Full-text available
Cities are growing nowadays and so is their citizens’ demand for mobility. On a global scale, motorized individual traffic is hardly capable of meeting this need due to its ownership costs and due to the lack of an accordingly large infrastructure. Besides, motorized individual traffic is responsible for the majority of today's traffic burdens, suc...
Conference Paper
Full-text available
Microscopic models of traffic demand and traffic flow have reached a maturity which allows their usage for investigating large-scale effects of measures and/or developments. In microscopic models, every participant is described individually by a set of attributes. Demand models use attributes such as the age, employment state, sex, home location, a...
Conference Paper
Contour accessibility measures are a set of performance indicators used to value a location by the amount of accessible activities, places, or space within certain time or distance limits. They are used for evaluating a region’s activity offers taking the connectivity to its surrounding into regard and act as input data for land use planning models...
Conference Paper
Full-text available
Microscopic travel demand models take the characteristics of every individual person of the modeled population into account for computing the travel demand for the modeled region. The real world mobility of individuals strongly depends on the specific available car, if any. However, mode choice models usually take a standard average car as referenc...
Conference Paper
Full-text available
Dear reader, You are holding in your hands a volume of the series „Reports of the DLR-Institute of Transportation Systems“. We are publishing in this series fascinating, scientific topics from the Institute of Trans- portation Systems of the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt e.V. – DLR) and from his environment. We...
Conference Paper
Cities are growing nowadays and so is their citizens’ demand for mobility. On a global scale, motorized individual traffic is hardly capable of meeting this need due to its ownership costs and due to the lack of an accordingly large infrastructure. Besides, motorized individual traffic is responsible for the majority of today's traffic burdens, suc...
Conference Paper
„Erreichbarkeit“ als Maß der Erschließungs‐ und Versorgungsqualität von Raumeinheiten spielt eine zunehmend wichtigere Rolle in der Verkehrs‐ und Stadtplanung. Sie beschreibt die Standortqualität eines Punktes im Raum, ausgedrückt durch die verkehrlichen Beziehungen zu anderen Punkten im Raum (operationalisiert durch Variablen wie Reisezeit oder Re...
Conference Paper
Full-text available
The raising of awareness about air pollution has brought about legislative regulations that force local administrations to keep the concentrations of certain pollutants under the formulated thresholds. A large variety of measures have been implemented to reduce road traffic’s emissions on the local level, but the observed results are not always sat...
Conference Paper
This article considers different driving patterns at a traffic light (TLS). The motivation is to determine and improve the behavior of traffic flow at controlled intersections, given the availability of the so-called “EcoDriving” (USA) or “GLOSA” (Europe) application. This is an advanced driver assistance system that tells the driver which speed to...
Chapter
While most standardized vehicular communication applications aim on increasing traffic safety, the exchange of messages between vehicles and the environment may be used for other purposes at no additional hardware costs as well. One possible area of such applications is traffic management. Traffic management requires data about the state of the roa...
Conference Paper
Most applications built upon vehicular communications (V2X) target on increasing traffic safety. They often require a direct communication between at least two vehicles equipped with a communication device. Thereby, a sufficient amount of equipped vehicles is necessary for assuring these applications’ functionality. Meanwhile, traffic management ne...
Conference Paper
The reduction of vehicular pollutant emissions is pursuit by different actors, from local traffic managers to vehicle manufacturers. One promising attempt are in-vehicle solutions that advice the driver to use a most environment-friendly speed and acceleration over time. One of them is GLOSA, Green Light Optimal Speed Advisory, which is based on ve...
Conference Paper
Full-text available
Stopping and accelerating at traffic lights is one of the main contributing factors to vehicular emissions in urban environments. The work in this paper demonstrates a generic guideline for minimizing CO2 emissions at traffic lights. This was done using an adaptive control, which uses a cost function for optimization, rather than network-specific c...
Article
The aim of this document is to indicate how the results of COLOMBO can be exploited. The document does not only focus on the duration of the project, but also assesses the possibilities beyond the end at 31st of October 2015. A good reference for the exploitability of the COLOMBO results is the Technology Readiness Level (TRL), which is used in the...
Conference Paper
While most standardized vehicular communication applications aim on increasing traffic safety, the exchange of messages between vehicles and the environment may be well used for other purposes at no additional cost as well. One possible area of applications is traffic management. Traffic management requires data about the state of the road network....
Conference Paper
Full-text available
Dear reader, You are holding in your hands a volume of the series „Reports of the DLR-Institute of Transportation Systems“. We are publishing in this series fascinating, scientific topics from the Institute of Transportation Systems of the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt e.V. - DLR) and from his environment. We ar...
Conference Paper
Full-text available
Walking is the most natural way of human mobility. The microscopic simulation package SUMO has supported an intermodal person-based simulation including pedestrian since 2010 (version 0.12.0). However, movements along a road were resembled using a linear interpolation only and pedestrian dynamics at an intersection were not modelled at all. Within...
Conference Paper
This paper presents an approach for coupling traffic simulators of different resolutions in order to conduct both large scale and high fidelity virtual evaluations of Advanced Driver Assistance Systems based on Vehicular Adhoc Networks. The emphasis is put on the need for such an attempt to satisfy the constraint of performing simulations in real t...
Article
Full-text available
A large effort is needed to gather, convert and adapt all the data needed to replicate a part of a real road network. To allow performing real-world evaluations using SUMO out-of-the-box, three “real-world” traffic simulation scenarios that represent parts of the city of Bologna are made available to the public. With these scenarios, researchers ar...
Article
The aim of D2.3 is to show how the traffic control system proposed by COLOMBO in the previous D2.2 has been extended and how it reacts without full knowledge of the vehicles approaching the controlled intersection. At first, the developed extensions of the traffic light algorithms to deal with incomplete knowledge are presented. Two methods to esti...
Article
The Deliverable 3.2 presents the technology behind the off-line configuration process used to find proper parameters for the traffic light algorithms presented in WP2’s Deliverable D2.3. The document gives an introduction into the topic of automatic configuration. It describes the main automatic algorithm configurators that have been considered for...
Article
Full-text available
Deliverable 5.3 describes the work performed in Task 5.3 on a “Traffic Light Algorithm Evaluation System”. This work includes two approaches. The first is the derivation of a single performance indicator that combines conventional traffic efficiency measures, measures describing how drivers perceive the traffic state as well as environmental measur...
Article
Full-text available
The major objective of the deliverable is to present the traffic surveillance algorithms designed within COLOMBO. The deliverable gives an overview of existing conventional traffic surveillance approaches, first, which are mainly relying on stationary detectors. In a second step, this document places the algorithms developed in COLOMBO in the scope...
Article
The first part of this document is dedicated to descriptions of work performed on the PHEMlight emission model after the delivery of D4.2. The major outcome are in-depth comparisons of the applicability of both models as well as of the results they deliver. It is emphasized that PHEMlight’s improved capability to model a coasting / motoring behavio...
Chapter
Full-text available
This contribution evaluates and improves the open-source “DFROUTER” tool that is contained in the SUMO traffic simulation suite. DFROUTER uses vehicle counts (e.g. from inductive loops) to calculate routes of vehicles through road networks. This approach is designed for highway corridors that are covered with measurement facilities at all entry and...
Conference Paper
SUMO is an open source microscopic road traffic simulation developed at the German Aerospace Center since the year 2000. The major audience is the traffic research community. This article tries to answer whether SUMO got accepted, who uses it, and for which purposes. The investigation is performed based on a collection of scientific publications th...
Article
Besides basic models for longitudinal and lateral movement, a traffic simulation needs also models and algorithms for right-of-way rules. This publi-cation describes how passing an intersection is modeled within SUMO, includ-ing a description of an earlier and the currently used model.
Article
Full-text available
Die Einhaltung von Grenzwerten für Schadstoffe ist ein zunehmend wichtiger Bestandteil des Verkehrsmanagements. Eine Auswertung bisheriger Ansätze zeigt jedoch, dass nicht alle Maßnahmen erfolgreich sind. Mikroskopische Verkehrsflusssimulationen, die die Bewegung einzelner Fahrzeuge modellieren, erlauben eine feingranulare, nach verschiedenen Verke...
Conference Paper
Improving the efficiency of urban vehicular mobility, also via the optimized management of the dynamic behavior of traffic lights with limited infrastructure investments and limited operational costs, is widely recognized as a crucial goal for smart cities, capable of relevant economic impacts in terms of travel time/cost reduction and better susta...
Conference Paper
Full-text available
Traffic lights play a major role in traffic management. It is known how to compute the delay-minimizing optimal programs for single intersections or networks of them, if a static flow is assumed. But traffic flow changes on different time scales and many adaptive algorithms were developed, all of which adapt the green time durations, phase orders,...
Article
In chapter 2, a literature research points out a lot of differences regarding to light signals between Austria, Belgium, France, Germany, Italy, Netherlands, and the United Kingdom. Normally the street user can handle the different light signals in a safe way, but when planning light signals certain differences could be recognised. In this chapter,...
Article
The deliverable comprises a state-of-the-art outline of pedestrian modeling. It covers the implementation of pedestrian and bicycle traffic in the traffic simulation SUMO.
Conference Paper
Full-text available
It is time consuming to set up a realistic traffic simulation scenario. Even though data is available, a large effort is needed to gather, convert and adapt all the data needed to replicate a part of a real road network. Available road networks usually have to be corrected and adapted to the used simulation model. The demand has to be converted or...
Conference Paper
Full-text available
The contribution analyses, evaluates and improves the open-source “DFROUTER” tool contained as part of the SUMO traffic microsimulation suite. DFROUTER uses traffic volume detector values to calculate complete routes for vehicles through simulation networks. This approach is designed for highway corridors. The study analyzes DFROUTER’s current func...
Conference Paper
Full-text available
Traffic puts a high burden on the environment in means of emitted pollutants and consumed fuel. Different attempts exist for reducing these impacts, ranging from traffic management actions to in-vehicle ITS solutions. When equipped with a model of vehicular pollutant emissions, microscopic traffic simulations are assumed to be helpful in predicting...
Conference Paper
Full-text available
Die EU schreibt Höchstgrenzen für die Konzentration bestimmter Schadstoffe vor. Es obliegt den Kommunen, diese Höchstgrenzen einzuhalten. Obwohl seitens des Verkehrsmanagements hierzu Ansätze existieren, zeigt eine Auswertung der MARLIS-Datenbank, die solche Maßnahmen sowie deren Beurteilungen beinhaltet, dass die Ziele nicht immer erreicht werden....
Article
This public deliverable is an extension of the draft deliverable D4.1. The first part covers the extensions performed on PHEM’s database for modelling the vehicle fleet in the year 2020. The document extension describes the second work item which was to allow using PHEM as an emission model directly within the COLOMBO overall simulation system (COS...
Article
Full-text available
While targeting on supporting descriptions of scenarios and extensions to the simulation suite, the document additionally delivers a complete overview of the evaluation procedures to use in COLOMBO. Starting with an overview of the evaluation process, based on work done in the FESTA project, the document includes definitions of the performance indi...
Article
Full-text available
This Deliverable 5.1 contains the design and a description of the work undertaken to combine and integrate the engaged software (SUMO, ns3, iCS, PHEM, ...) to suite the investigation tasks of the COLOMBO project. Requirements from the traffic management solutions to be developed in COLOMBO put on the overall simulation system have been collected. T...
Chapter
Full-text available
This text gives a short account on DLR’s open source micro-simulation tool SUMO. It does so mostly by reporting some of the applications cases that had been performed with the help of SUMO. These application cases show that SUMO is a very versatile, timely, and mature research tool which nevertheless is continuously developed further.