Researchers Released Global 30-Meter Accessibility Map
The new dataset enables high-resolution global modeling of human movement across land and water.
Updated on Oct. 3, 2026 in Geography
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Researchers have released the Global High-Resolution Updatable Friction Surface (GRUFS) dataset, which provides global 30-meter resolution raster data. The project offers a standardized way to measure movement and accessibility globally.
Why it matters
This data supports critical infrastructure planning, including service coverage assessment and facility catchment estimation. It allows for consistent policy targeting and scenario testing at a granular scale.
The dataset offers 30-meter raster resolution, providing a significant increase in spatial detail over traditional global friction maps. It includes two distinct surfaces: GRUFS Foot, which models pedestrian movement, and GRUFS Mixed, which accounts for both vehicular road speeds and off-road travel.
The details
The surfaces are constructed by synthesizing transport and water features with global elevation data from FABDEM and land cover data from GLAD. The system integrates OpenStreetMap inputs to track roads, paths, and ferries. These inputs are processed into scaled integer raster surfaces, which users can access alongside lookup tables and the production code for future iterations.
Timeline
October 3, 2026: The research article was published and the dataset was made available.
The Tech Race
This release advances the field of global geographic information systems by providing an open, reproducible standard for accessibility modeling. It follows the precedent of data-sharing initiatives like the GLAD land cover project, aiming to move accessibility metrics from static assessments to annual, versioned updates.
Researchers and urban planners can use the dataset to conduct detailed service coverage assessments for clinics, schools, and markets. The modular design allows for annual updates, meaning analysts will gain access to more current snapshots of global mobility as the project versioning continues.
The takeaway
The GRUFS release provides a new standard for high-resolution accessibility modeling. Watch for future annual version releases of the dataset to track changes in global infrastructure and land accessibility over time.
Further reading
For more on the spatial data and mapping standards shaping modern research, visit Geography.
More information
Access the full data and methodology in the Scientific research article and dataset.
Source note: This article includes information reported by Nature.
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