VoltNav

Data & Attributions

VoltNav's maps, routing, search, and elevation data all come from open datasets and open-source software. This page credits every source that makes the app possible.

Maps & Routing — OpenStreetMap

Map data, the road network, and turn-by-turn routing are built from OpenStreetMap, © OpenStreetMap contributors, available under the Open Database License (ODbL).

openstreetmap.org/copyright
Our OSM derivative database derivation methodology

Vector Tiles — OpenMapTiles

The map's vector tiles use the OpenMapTiles schema. © OpenMapTiles.

Address Search — Photon

Address search and reverse geocoding are powered by Photon, an open-source geocoder built on OpenStreetMap data.

Elevation Data

Elevation profiles and grade-aware bike routing use SRTM-based terrain data. Required attribution:

  • ArcticDEM terrain data DEM(s) were created from DigitalGlobe, Inc., imagery and funded under National Science Foundation awards 1043681, 1559691, and 1542736
  • Australia terrain data © Commonwealth of Australia (Geoscience Australia) 2017
  • Austria terrain data © offene Daten Österreichs – Digitales Geländemodell (DGM) Österreich
  • Canada terrain data contains information licensed under the Open Government Licence – Canada
  • Europe terrain data produced using Copernicus data and information funded by the European Union - EU-DEM layers
  • Global ETOPO1 terrain data U.S. National Oceanic and Atmospheric Administration
  • Mexico terrain data source: INEGI, Continental relief, 2016
  • New Zealand terrain data Copyright 2011 Crown copyright (c) Land Information New Zealand and the New Zealand Government (All rights reserved)
  • Norway terrain data © Kartverket
  • United Kingdom terrain data © Environment Agency copyright and/or database right 2015. All rights reserved
  • United States 3DEP (formerly NED) and global GMTED2010 and SRTM terrain data courtesy of the U.S. Geological Survey

Administrative Boundaries — Natural Earth

Country and region boundaries used to determine local e-scooter regulations come from Natural Earth, released to the public domain.

Open-Source Software

Maps are rendered with MapLibre GL (BSD license). Text is set in Hanken Grotesk, Inter, and JetBrains Mono, self-hosted rather than loaded from Google's servers.