This options below represent editable JSON schema files.
Comments and suggested changes are welcome
https://www.4wheelz.co.uk/learning-to-drive/pedestrian-crossings/
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/330214/ltn-2-95_pedestrian-crossings.pdf
https://content.tfl.gov.uk/lcds-chapter5-junctionsandcrossings.pdf