An OpenStreetMaps & INSPIRE databases story a technical experience with transport network

Introduction of the story Spanish INSPIRE TN database Sources: Cadastre (streets), Statistical Office (street names), National Mapping Agency (roads). Auxiliary sources: Regional and Local Mapping Agencies. Features: INSPIRE oriented (with some extensions) WMS & WFS implemented base on this database 3D Network topology PostgreSQL We have invested a lot of human and economic resources.

But we have to face a problem The complex updating processes: Many organizations with competences in TN. Distributed task. No software tools available for a very complex data model.

What if we use OpenStreetMaps? They have an open software environment for editing and updating geometries. It’s a very success and well known project (easy to sell the idea). It’s very well supported project -including the EEA :( -.

And even more… It could be a key source of VGI. It could be a source for data quality evaluation. It could be a source for detecting changes. It could be a source for data we don’t have (as road directions). It could be a way to disseminate official data. So the system should work in both directions.

So we started to work First attempt: Contacting with the Spanish OSM association. But it is a group of geeks They don’t have an organizational structure. We couldn’t hire them.

So we started to work Second attempt: A Spanish company had worked for Eurostat in a project to compare OSM vs EuroRegionalMaps railways data. So, at least, they knew the OSM data model. Then we decided to contract them.

The project “Defining a transformation protocol and a gateway from Spanish INSPIRE TN and OSM databases”. Budget: 60k € Subcontractor: Guadaltel

The architecture GATEWAY TN - OSM INSPIRE TN DB OSM TN DB EDITOR SW

The software Kettle tool for initial migration ETL processes (Pentaho configuration). TileCalculator library for inclusion in the bulk load process for OSM data model. Application to execute migration and synchronization processes from INS TN to OSM and from OSM to INS TN. iD OSM editor.

The outcomes of the project Feasibility of the use of OSM environment as a collaborative platform for the maintenance of INS TN database. Migration protocols allow the communication and track changes between INS TN and OSM databases. Performance improvements have been needed due to the big amount of data to be migrated. OSM data model implements a completely de- normalized structure, so errors in the insertion can be reverted to INS TN database. OSM open data model allows a free insertion and edition of tags and values non standardized for TN.

Next steps Improving INS TN geometries to facilitate OSM migration process. Enhancing massive loads process. Reusing of existing tags in OSM to improve the INS TN mapping. Developing a plugin for OSM iD editor to manage TN specific data and logic. Communications, dissemination, training.

OSM, a threat or an opportunity? They are taking the place of the NMCAs

OSM, a threat or an opportunity? Spreading official data

OSM, a threat or an opportunity? Using OSM data Only if the contributor declares their data as “public domain”. If not, the OSM licenses is more restrictive than IGN one. You can use OSM for commercial porpouses.

“if you can’t beat them, join them”