created_datestring date-time required
modified_datestring date-time required
namestring required
Short name, up to 256 characters
commentstring
Extended description, up to 2048 characters
bbox_intersection_point'top right' | 'middle right' | 'bottom right' | 'top center' | 'middle center' | 'bottom center' | 'top left' | 'middle left' | 'bottom left'
video_archiveinteger nullable
attributesstring[]
line attributes each up to 256 characters
ab_namestring nullable
AB direction name, up to 256 characters
ab_attributesstring[]
AB direction attributes each up to 256 characters
ba_namestring nullable
BA direction name, up to 256 characters
ba_attributesstring[]
BA direction attributes each up to 256 characters