Description
Following the development of GEM's v2026.1 Global Liquefaction Hazard Map, a global dataset of roads from OpenStreetMap (OSM) has been overlain with this map, as well as the v2026.1 Global Maps of Seismic Hazard and the results in terms of the top 15 countries and territories according to road length, roads exposed to high ground shaking (PGA>0.3g), and roads exposed to severe liquefaction are summarised in the downloadable poster. The global network comprises 18% highways, 14% primary roads, 22% secondary roads, and 46% tertiary roads. Road density varies substantially across countries and regions, reflecting differences in infrastructure development and mapping practices. Although comparisons with national statistics generally show good agreement, OSM completeness remains uneven, particularly in parts of the Global South. Consequently, results should be interpreted as a global-scale approximation of road exposure.
How to cite this work
Todorović L, Costa C, Rao A, Silva V (2026). Global Earthquake Model (GEM) Global Map of Liquefaction and Road Exposure (version 2026.1), https:// doi.org/10.5281/zenodo.20208650
Available Versions
A PDF poster is available for direct download under a CC BY-SA license. If your use case does not meet the open license requirements, or if you are interested in obtaining the underlying dataset as a shapefile, please submit a request in our system by clicking on the "License Request", where a specific license will be provided, depending on the use case.
License information
The downloadable resources are available under a Creative Commons CC BY-SA 4.0 license, which requires:
Attribution (you must give appropriate credit, provide a link to the license, and indicate if changes were made)
ShareAlike (derivatives created must be made available under the same license as the original)
Any deviation from these terms incur in license infringement and requires a license agreement that must be made tailored to your use case, in such instance please click on "License Request".
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