Roadmap

Analysis of OSM data

This is an exploratory analysis of the opportunities brought by the increasing data availability in OSM. The objective is to maximize the amount of information we collect for each road segment (road type, surface, max speed, width, accessibility...) for a better modelling of travel times.

Deadline: 2019-07-31

• Compute statistics on road network availability in OSM
• Compute completeness metrics/maps
• Write report

Implementation

A first functioning implementation of the processing chain. The objective is to provide an early implementation of the software stack in order to (1) detect technical issues, and (2) support future research on modelling improvements.

Deadline: 2019-09-30

• Automated data acquisition
  • OSM
  • Land cover
  • Topography
  • Health facilities
• Data preprocessing
  • Reclassification
  • Rasterization & resampling
• Modelling
  • Friction raster
  • Travel times
• Compute accessibility metrics
• Maps & visual outputs
• Write documentation
• Write report

Modelling improvements

• Population maps
  • Investigate circularity issue related to the use of OSM in WorldPop
  • Investigate the use of Facebook population maps
  • Update population maps with better land cover data and without OSM?
• Land cover
  • Handling seasonal variability of land cover (forests, water)
  • Can we improve land cover data using Sentinel imagery?
  • Real-time detection of major land cover changes (e.g. after a natural disaster)?
• Travel times calibration
  • Collecting ground-truth data on travel times depending on land cover and transport mode
  • Investigating the use of crowd-sourced platforms to collect calibration data
• Travel times validation