The Travel Sustainability Index measures sustainable travel behaviour and car dependence using car ownership and journey to work data from the 2021 Census. More sustainable locations have higher proportions of zero car households, and of public transport and active travel. Index produced by D A Smith (2025), UCL.
Dataset: Travel Sustainability Index 2021
Travel sustainability score from 0 (most car dependent) to 100 (most sustainable).
| 0 - 10 (least sustain.) | 35 - 42.5 | ||
| 10 - 20 | 42.5 - 50 | ||
| 20 - 27.5 | 50 - 70 | ||
| 27.5 - 35 | 70 - 100 (most sustain.) |
| Data Layer Extent | England & Wales |
| Travel Sustain. Index | 20.4 |
| Car Free Households | 23.3% |
| Car Journey to Work | 73% |
| Public Transport JtW | 11.5% |
| Walk & Cycle JtW | 11.1% (walk), 3.9% (cycle) |
Select an area on the map or chart for local stats.
Map base layers Ordnance Survey open data, Crown © and database right 2026. Open data layers from DfT, MHCLG, ONS & UCL. Retail Centres data from GeoDS.
Site is an output of the ENHANCE Project. Cartography and design D A Smith, CASA UCL. Site uses the MapLibre library.