ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research ETISplus Final Workshop Validation Brussels Daniela Carvalho (TIS) Consortium:DEMISISISITCKITMKMetric NEA (Coord) NESTEARNTUNTUAOBETSTRATASTRATECTETRAPLANTISTMLTNOTRTUNIZA

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Validation in ETIS plus Concept and reasoning Validation dimensions Internal Validation Exercise Learning’s and Recommen dations

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Transport modeling is essential to policy assessment and development: requirement for good quality input data to support models, evaluation methodologies and indicator frameworks Information integration and consistent data source minimise the risks and problems of data interpretation arising from the heterogeneous methodologies associated with the available data sources ETISplus, by targeting the data needs of the European Commission’ s reference transport models aims to create a central resource of policy oriented datasets which will be of immediate use to policy analysts The data gathered in this project, as well as the data to be gathered in later updates of the ETIS database, need to be checked for quality and consistency, in a structured manner WP10 fully dedicated to validation Concept and reasoning

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Validation in ETISplus had a twofold objective:  to assure that the data fulfils the needs for the transport models in use to support transport policy related measures and actions (external perspective)  to present consistent data, free from obvious mistakes or gaps, in order to turn the database reliable and ready to be used (internal perspective) Validation dimensions External Internal EU Models (WS March 2012) Nat Experts (Survey) Supporting data FreightPassenger Suggestions were reverted in databases Corrections to implement Validation

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Focus of External Validation with EU Transport Models:  How does ETIS+ fulfils the current needs for on-going models and policy monitoring  Ascertain whether the content of ETIS+ is suitable to the data needs from major European modelers and policy makers  Identify possible gaps or missing indicators Trans- Tools V3 ASTRATrans-Tools V3 TREMO VE ASTRA POLES CGEuro pe SASI LOGIS RHOMO LO VACLAV VIA NEAC Compilation and documentation of the conclusions and recommendations = inputs for database developers =

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Focus of External Validation with National Experts:  Evaluation of outputs generated focusing in particular in own country data: accuracy /plausibility / coherence /comprehensiveness  Mostly through graphical visualization (ETIS-VIEW tool) General data 1) GDP per Capita ) GDP per Capita ) Motorization Rate Freight ) Motorization Rate Freight ) Motorization Rate Passenger ) Motorization Rate Passenger ) Freight Performances in Ton-Km car and rail 8) Passenger-kilometers car and rail Airport data 9) Air passenger accessibility ) Air freight accessibility ) Airport freight ) Airport freight ) Airport passenger ) Airport passenger 2010 Rail data 15) Rail freight assignment ) Rail Freight Net Max. Speed ) Rail Passenger Net Max. Speed ) Passenger trips by rail Road data 19) Road freight assignment ) Passenger trips by car Waterborne data 21) Sea Port Freight ) Sea Port Passenger ) Inland ports ) IWW assignment 2005

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Data Screening => structural checks implemented throughout the development of the database software platform:  Input data errors,  Measurement errors,  Sampling errors & Transfer errors,  Specification errors,  Aggregation errors Internal Validation Exercise

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Data Evaluation  3 main issues: consistency of data, consistency over time, and data continuity check (checking of graphic attributes)  Continuous interaction between “validators” and “developers” Internal Validation Exercise Road, rail, air transport Public Transport Coach transport Short distance Transport Passengers Demand International Freight Flows National Freight Flows Logistic Data: transport logistics and distribution / inventory, containers Freight-Logistics Socio-economic Networks (road, rail, air, inland, maritime) Level of Service Transport External Impacts Supporting Data Aggregated checks, Reasonableness Checks (NTUA, NESTEAR, TRT)

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Socioeconomic datasets: Techniques used Missing value Missing value analysis between EU27 and other countries. Total sum of all subsets The sum of all subsets should reasonably be equal to the total population of the set. E.g. the sum of males and females in a region should be equal to the total population of the region. The sum of sub classes (e.g. population by gender and age group) should reasonably be equal to the total number of population. + = Identification of extreme values Certain parameter values have been statistically analyzed using descriptive statistics in order to identify extreme (erroneous or suspicious) values in the associated datasets Min, 5% Percentile, Average, 95% Percentile, Max values number of cases in the range of [0-2%), number of cases exceeding the 2% threshold, etc.) Comparison with alternative sources In this test parameter values are compared with associated values of alternative sources.

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Excel files: One for each parameter containing detailed analysis and results (all erroneous and suspicious values) Corrections incorporated by developers Socioeconomic dataset: Parameters and tests performed

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Networks: Techniques used Test #1: Check for not connected links of the network Test #2: Network end points inside the sea Logical Rule: Identification of network links that are not connected. Technique: Topology rule of ArcGIS “do not have dangles” Logical Rule: Identification of the terminal points of the network that are outside the land region and indicates if in the Bing Maps these points are actually on land or in the sea. Technique: Topology rule of ArcGIS “must be properly inside”

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Networks: Techniques used Testing road network in terms of path selection and travel time duration Greece-Germany (interviews with truck drivers)

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Networks: Techniques used Test for network continuity: minimum road paths crossing border points & sea connections through ports

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Impedances: Techniques used Test: Calculation of access and flight speed Techniques: a) Check if “Access Time + Flight Time = Total Time, b) Frequency distribution for Access and Flight Speed Air Impedances Road Impedances Test: Calculation of distances between regions (centroids) Rail Impedances Test: Calculation of distances between regions (centroids) 1. (as Road Impedances) 1. Calculation of the difference between distances traveling from region A to B minus distances from B to A. Regions with road distances less than 20 Km 2. Identification of short distances between centroids 2. Identification of regions that have no rail impedances but rail network exists Regions with missing rail freight impedances, while rail network seem to exist

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Validation exercise Validation by comparing ETISplus tables themselves checking logical consistency : i.e. ∑ loaded goods of all regions =∑ unloaded goods of all regions tables “Air Freight by OD”, “International Road Freight”, “International Rail Freight”, “IWW Freight”, “International Pipeline Freight” were compared with table “EU Detailed Trade (Comext Transport)” at national level, differentiated by mode of transport Validation by comparing ETISplus tables with other data source and comparing indicator calculated from ETISplus tables with other data source (reference) UNECE Transport Statistics, Sitram TRM statistics* CAFT Port Authority: statistics of “throughput annual” WTO statistics TRM * The statistics come from the French part of the European survey on road freight transport. In France, it concerns the transport carried out by trucks over 3.5 tons GVW registered in France, and used for hire or reward or on own account

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Validation exercise Checks on trips distribution by distance and by purpose Correlation with socio economic data e.g. Correlation between total generated trips and population Correlation between inter/intra-zonal trips and population Correlation between attracted BUSINESS trips and WORKING PLACES and GDP Correlation between attracted COMMUTING trips and WORKING PLACES Correlation between attracted PRIVATE trips and POPULATION Correlation between attracted VACATION trips and BED PLACES Comparison with ETIF statistics in terms of PKM

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Learning’s and Recommen- dations Importance of dedicated validation processes performed by “independent” reviewers in addition to regular validation by developers Relevance of both internal and external views  External (EU) »» 3 workshops per mode (road, rail, maritime), 1 workshop with Eurostat, 1 workshop with EU models -importance of observed data (vs estimated data), relevance of detailed metadata concerning source and quality of the data collected is stated as a relevant factor -Importance of including additional information, especially concerning prices, taxes and tariffs »» database was shaped in line with expectations, -Provision of reference indicators that could be used for validation purposes  External (MS) »» allowing country experts to visualise its own results -Identification of “new” gaps and uncertainties but particularly provision of new data -Inputs being updated in ETIS+

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Learning’s and Recommen- dations  Internal »» strong interaction process between validators and developers -inconsistencies verified (data entry mistakes / wrong data) and corrected -findings of validation included in metadata Different validation processes and consistency checks undertaken will be reported in ETIS plus report to be used as guide for future exercises Highlight the importance of applying different layers of validation processes: Internal routines by database developers Internal checks performed by “independent” validators External validation by users of datasets External validation by users (policy) ETIS+ dedicated large efforts towards the requirement for good quality input data to support models

ETIS+: European Transport Policy Information System - Development and Implementation of Data Collection Methodology for EU Transport Modelling Funded by the European Commission through the 7th Framework Programme for Research Thank you for your attention Consortium:DEMISISISITCKITMKMetric NEA (Coord) NESTEARNTUNTUAOBETSTRATASTRATECTETRAPLANTISTMLTNOTRTUNIZA Daniela Carvalho