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Public Rights of Way Progress

County Parishes RoWs LTotal Ldesignation Lprow_ref GIS Update
Bath and North East Somerset 86 2104 886 km 612 km 69% 412 km 46% 2019‑11‑26 10m
Cambridgeshire 235 4112 3229 km 1475 km 45% 877 km 27% 2020‑09‑29 3w
Cornwall 213 6576 4426 km 710 km 16% 93 km 2% 2020‑08‑27 8w
Derbyshire 280 9867 5221 km 4312 km 82% 415 km 7% 2020‑08‑28 8w
Devon 426 6601 5013 km 3622 km 72% 3492 km 69% 2020‑05‑29 4m
East Riding of Yorkshire 171 1838 1624 km 781 km 48% 37 km 2% 2018‑02‑02 2y
East Sussex 107 7865 3184 km 1182 km 37% 429 km 13% 2019‑04‑06 18m
Essex 314 10151 6406 km 1743 km 27% 871 km 13% 2020‑06‑08 4m
Gloucestershire 266 10018 5513 km 1585 km 28% 261 km 4% 2019‑10‑16 12m
Hampshire 273 7324 4603 km 3929 km 85% 497 km 10% 2020‑05‑22 5m
Herefordshire 246 4578 3494 km 1331 km 38% 608 km 17% 2019‑11‑04 11m
Hertfordshire 137 5523 3159 km 2453 km 77% 2072 km 65% 2020‑09‑07 6w
Isle of Wight 20 1438 856 km 863 km 100% 862 km 100% 2017‑07‑21 3y
Kent 62 9706 6883 km 2379 km 34% 1097 km 15% 2017‑11‑01 2y
Lancashire 233 11419 5547 km 2295 km 41% 2009 km 36% 2018‑01‑23 2y
Norfolk 546 5846 3871 km 3328 km 85% 3317 km 85% 2020‑06‑11 4m
North Yorkshire 730 12791 10242 km 2984 km 29% 45 km 0% 2020‑08‑02 2m
Oxfordshire 322 5988 4232 km 2255 km 53% 639 km 15% 2019‑02‑21 20m
Somerset 341 9812 6147 km 5671 km 92% 5565 km 90% 2020‑03‑23 7m
South Gloucestershire 46 2292 1264 km 229 km 18% 20 km 1% 2019‑08‑28 13m
Suffolk 484 10437 5744 km 2425 km 42% 2173 km 37% 2020‑07‑15 3m
Warwickshire 18 3318 2839 km 2126 km 74% 1045 km 36% 2019‑06‑21 16m
Worcestershire 198 15695 4589 km 2425 km 52% 1411 km 30% 2020‑06‑09 4m

Note that the "Ldesignation" lengths are only approximate (and will normally be an over-estimate) as the tool does not check precise parishes for ways with a designation tag but no prow_ref tag. Consequently, it includes any OSM ways of this type that fall within the rectangular boundaing box of each parish, rather than just those that are contained within the parish boundaries.

About this tool

This tool takes information about Public Rights of Way from four sources and flags up possible errors / omissions / things to check. Currently only a handful of counties are available, but hopefully more will be added in due course. The data sources are:

  1. Official GIS data from County Councils. Many councils now have digital versions of the legal 'Definitive Map' document they are obliged to maintain. Many have made their data files available fir re-use under a suitable licence (see my open data page). Vector routes, path numbers, designations, lengths and bounding boxes can be extracted automatically from data files. I've started using the files from Barry Cornelius's rowmaps for this, as Barry has already done the hard work in converting the myriad of different formats from the councils into a standard KML format. Updates to this data depend on how frequently the corresponding council provides updates. I would like to have new data for ecah county at least once a year, but this isn't always available.
  2. Volunteer-Mapped data from OpenStreetMap. Path numbers, designations, lengths, bounding boxes, last update details, etc. can be extracted automatically on a parish by parish basis using the XAPI. The tool will extract all ways with a prow_ref=* tag within the parish's bounding box. The data from OSM is updated on a rolling basis with each parish getting an update roughly once every couple of weeks. There is a button at the bottom of each parish page to request a quicker update — which will usually be within half-an-hour.
  3. Definitive Statements. These are written documents providing textural descriptions of each Public Right of Way. Some councils have only paper records, but many now have digital versions. Sometimes these are unstructured formatted text documents (and so data needs to be manually extracted) but other councils have databases or spreadsheets (which allow automatic extraction of route numbers and statuses.
  4. Manual classification of OSM completion level. This would be entered by tool users, after comparing the official data with the current mapping in OSM.

I've got scripts to do the extraction from first two sources set up. I can do the third behind the scenes, and there is an experimental interface set up for the fourth. Get in touch if you would like to try this out.

With the data the tool can then flag up issues such as:

The tool is currently under development, so various key bits of functionality are not implemented yet. For details see the Known Issues and To Do List.

Suggested uses for OSM Mapping

However, please do not use the PRoW GIS data alone to map routes in OSM. The data may not be completely accurate or well-aligned, and it is important that we capture the physical presence and accessibility of routes on the ground too. Simply copying the Council's GIS data into OSM adds very little to the map. Correctly mapping a path with the condition of the surface, adjacent hedges, gates and stiles is much more useful. See also my advice for routes not following the definitive line.

Adding new authorities

I intend to add more areas as and when I have time to do so. The main constraints though are having access to the data and it being available for re-use under a suitable licence for use in OpenStreetMap. The basic requirements are:

For my own use (and for anyone else who's interested) I've written a set of import instructions outlining the process of adding a new county to the tool.

It is also useful if the authority makes available its Definitive Statements, List of Streets and a list of Traffic Regulation Orders affecting Public Rights of Way. See my Council PRoW Open Data page for an incomplete list of what is available from each authority.