1. Institute of Transport Research - Berlin-Adlershof 1 Clearing House for Transport Data & Transport Models IASSIST 2003 - Strength in Numbers, Ottawa (Canada) Session A2 - Empowered by Metadata: Building Systems of Access Angelika Schulz, Elmar Brockfeld, René Kelpin, Antje Parnitzke, Peter Wagner German Aerospace Center - Institute of Transport Research Berlin-Adlershof, Germany Title

2. Institute of Transport Research - Berlin-Adlershof 2 Table of Contents  Current Situation  Objectives  Transport Data  Transport Models  Components  Retrieval – Catalogues  Prospects  Contact

3. Institute of Transport Research - Berlin-Adlershof 3 Current Situation  transport research is a highly complex and heterogeneous topic  divided in several subdivisions  uncountable research projects, respective outcomes, and publications  huge amounts of data as basis of scientific work  insufficient knowledge about already existent information and its availability  limited usability of data and models due to insufficient documentation  limited comparability due to varying format and quality of documentation overview and guidance won`t be bad...

4. Institute of Transport Research - Berlin-Adlershof 4  to encourage publication and dissemination of relevant research outcomes  to provide metadata as well as data (in a standardized format)  to emphasize transport issues in order to supplement other archives (e.g. federal statistical authorities)  to facilitate easy access to information Objectives Objectives of the Clearing House Where do I get it ? What is available ? ? ? all in all: to provide better information on transport data and fundamentals of transport models

5. Institute of Transport Research - Berlin-Adlershof 5 Subject 1: Transport Data Thematic Focus – Transport Related Data  data as basic input for transport research, e.g.  empirical survey data on everyday mobility, individual time-use, infrastructure, …  measurement data such as traffic flow data, floating car data (FCD), …  various components have to be documented, e.g.  large data sets (statistical software formats, flat files)  extensive supplementary material (codebooks, digitized questionnaires)  availability status, holdings information  related publications and project websites

6. Institute of Transport Research - Berlin-Adlershof 6 Subject 2: Transport Models Thematic Focus – Transport Models  modeling as basic method used in transport research, e.g.  models of traffic flow, traffic demand, …  various components have to be documented, e.g.  formulas, source code  information about required input data  related software applications (simulation tools)  availability status (open source vs. commercial software product)  related publications and project websites

7. Institute of Transport Research - Berlin-Adlershof 7 Components - Website Components  data base for quantitative transport data  empirical and traffic flow data resulting from surveys or measuring campaigns  explanatory metadata and supplementary material  data base for transport models  mainly explanatory metadata  test suite for transport models  cross references (hyperlinks) to additional information sources  other archives  research institutions

8. Institute of Transport Research - Berlin-Adlershof 8 Metadata  documentation of survey data sets is based on DDI-standard (codebook.dtd)  documentation of technical measurement data requires another documentation format, which is adjusted & simplified compared to DDI

9. Institute of Transport Research - Berlin-Adlershof 9 Retrieval - Catalogues Retrieval and Information Access  catalogues (thematic, spatial, chronological)  search engine (site-specific, based on thesaurus) exploration of existent information, identification of relevant surveys/ models in-depth examination of selected information regarding usability, preliminary insight into data set or modeling approach  metadata documentation (according to DDI standard)  NESSTAR Light Explorer (metadata & data)

10. Institute of Transport Research - Berlin-Adlershof 10 Prospects Prospects – What's left to do ?  to expand successively the collection of data sets (data acquisition and publication of relevant data sets, e.g. German Mobility Panel, MiD 2002 - Mobility in Germany, SrV - System of Representative Transport Surveys, FCD - Floating Car Data, DATELINE)  to develop a data base for transport research projects (metadata as well as cross references, e.g. to project websites, English version)  to enhance and complete the website (e.g. data base for research projects, test suite for transport models)  the overall objective: to establish the clearing house as main information source and contact point regarding transport data and transport models

11. Institute of Transport Research - Berlin-Adlershof 11 Contact Address-German Aerospace Center Institute of Transport Research – Clearing House Rutherfordstrasse 2 12489 Berlin GERMANY Phone-+49 (0) 30-67055-204 Fax-+49 (0) 30-67055-202 Homepage-http://www.clearingstelle-verkehr.de E-Mail -info@clearingstelle-verkehr.de