Road Completion in Belgium - Mapping & verifying *all* the roads

 

by

OpenStreetMap Belgium

Map
The
World!

'State of the Map' in Belgium

- Excellent basemap.

- Excellent state of transport-related data

  - Good quality road network.

  - Good quality transit data.

- Reasonable landuse.

- Basic address coverage

How far along are we?

How do we know?

What if things change?

Road Completion

Road Completion

Not about importing data!

Road Completion

Not about changing the way we map!

- Completeness & quality assurances.

- Change detection, spot changes faster

Road Completion

Road Completion Project

1. Compare OSM <-> Other data
2. Mapping!
3. Feedback

Loop 1

Loop 2

Comparison (tech)

- Convert source data (shapefiles, wegenregister)

  - ogr2ogr : reproject and convert to geojson

  - nodejs : convert attributes to OSM-tags

    => this makes the comparion process independent of  source.

  - mapbox/tippecanoe : split into vector tiles

 

- Distributed comparison process:

  - mapbox/tilereduce : process tiles in parallel.

 

GitHub: https://github.com/osmbe/road-completion

open-data

OSM

OSM (buffers)

comparison

diff

Comparison

(v 0.1)

Comparison

(v 0.1)

Comparison

(v 0.1)

Comparison

(v 0.1)

Comparison

(v 0.1)

Flanders

- 13900 cases, mostly driveways

- maproulette

 

-> only 1842 fixed

-> we don't want random people doing it

-> even 'heavy' mappers make it difficult

 

 

Mapping

 

We built a small app:

road-completion.osm.be

 

Developed during Open

Summer of Code:

2018.summerofcode.be

 

A team of students funded

by Brussels Government...

Mapping

 

Some examples:

 

https://road-completion.osm.be/#15.74/50.874343/4.422588 => different methodology.

https://road-completion.osm.be/#17.2/50.873231/4.406509 => false positive

 

Mapping

 

Some examples:

 

https://road-completion.osm.be/#18.59/50.8662248/4.3984346 => missing parking

https://road-completion.osm.be/#16.6/50.804377/4.40805 => an actual missing street!

Mid-term goals

• Verify OSM road network.
• Generate quality metrics for OSM roads in Belgium.

 

 

Do this is in the open, use open-source tools and open-data so everyone can run their own!

Why?

"We don't want to provide our data on a bad network."

 

"The OSM license doesn't allow combining it with our data."

 

"Anyone can modify OSM, you have to be crazy to use it!"

 

"Bla Bla..."

 

Trust!

Quality

&

Consistency

Imagine

• A costless (or very cheap) datasource.
• Quality checked and verified.
• Consistent.
• Almost always up-to-date.
• Community-driven!

 

 

Who can compete with this?

nobody

We

are

winning!