Property talk:P11109

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Onestop ID
identifier for public transporation-related entities in Transitland database

Applicable "stated in" value	Transitland (Q113379392)
Data type	External identifier
Domain	transport service itinerary (Q1067164), General Transit Feed Specification feed (Q113379415), public transport network (Q18325841) or public transport stop (Q548662)
Allowed values	[fosr]-([0123456789bcdefghjkmnpqrstuvwxyz]+-)?[\p{Ll}0-9~]+
Example	Amtrak (Q23239) → o-9-amtrak Transport for London (Q682520) → o-gcpv-transportforlondon Piccadilly line (Q207689) → r-gcpv-piccadilly Bay Area Rapid Transit (Q610120) → o-9q9-bart Aachen Central Station (Q300706) → s-u1h2f9gxy5-aachenhbf Amtrak General Transit Feed Specification feed (Q113379480) → f-9-amtrak~amtrakcalifornia~amtrakcharteredvehicle
Source	https://www.transit.land/documentation/onestop-id-scheme/
Formatter URL	https://www.transit.land/onestop-id/$1
See also	RICS company code (P9950), WikiRoutes ID (P9454)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P11109 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 11,315 Main statement 11,309 >99.9% of uses Qualifier 6 <0.1% of uses
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Explanations [Edit]

Type statistics

#Onestop ID type statistics
SELECT ?type (COUNT(?type) AS ?count)
(IRI(CONCAT("https://query.wikidata.org/#%23%20Onestop%20ID%20type%20",?type,"%0ASELECT%20%3Fitem%20%3FitemLabel%20%3Fid%0AWHERE%0A{%0A%09%3Fitem%20wdt%3AP11109%20%3Fid%20.%0A%20%20%20%20FILTER(SUBSTR(%3Fid%2C%201%2C%201)%20%3D%20%22",?type,"%22)%20.%0A%20%20%20%20SERVICE%20wikibase%3Alabel%20{%20bd%3AserviceParam%20wikibase%3Alanguage%20%22en%22%20}%20%20%20%20%0A}%0AORDER%20BY%20%3FitemLabel")) as ?instances)
WHERE {
  ?s wdt:P11109 ?id .
  BIND (SUBSTR(?id, 1, 1) AS ?type) .
 }
GROUP BY ?type

Try it!

Items with multiple Onestop IDs

The following separators are used to disambiguate IDs:

• connecting service (P1192)
• towards (P5051): adjacent station (P197) that is the next stop
• transport network (P16)
• applies to part (P518): station (Q12819564) or platform (Q64896574)

Route with multiple IDs

Opposite directions

Green Line (Q3720557)

• Onestop ID (P11109) → r-9q9-green~n
  • towards (P5051) → Berryessa/North San José (Q4894857)
• Onestop ID (P11109) → r-9q9-green~s
  • towards (P5051) → Daly City station (Q5211782)

Daytime / nighttime

501 Queen (Q3238944)

• Onestop ID (P11109) → r-dpz8-501
  • valid in period (P1264) → daytime (Q52643)
• Onestop ID (P11109) → r-dpz8-301
  • valid in period (P1264) → night (Q575)

Station with multiple IDs

Two transport networks

Burbank Airport–South station (Q3096094)

• Onestop ID (P11109) → s-9q5fdb9mj6-burbankamtrak
  • transport network (P16) → Amtrak (Q23239)
• Onestop ID (P11109) → s-9q5fdbd72w-burbankairport~southvclinemetrolinkstation
  • transport network (P16) → Metrolink (Q766647)

Opposite directions with separate ID for the station

California Avenue station (Q5020256)

• Onestop ID (P11109) → s-9q9hutfctt-californiaavenuecaltrainstation
  • towards (P5051) → San Antonio station (Q7413298)
  • applies to part (P518) → platform (Q64896574)
• Onestop ID (P11109) → s-9q9hutfcyg-californiaavenuecaltrainstation
  • towards (P5051) → Stanford station (Q7598711)
  • applies to part (P518) → platform (Q64896574)
• Onestop ID (P11109) → s-9q9hutewc2-californiaavenue
  • applies to part (P518) → station (Q12819564)

Two transport networks, multiple routes

Los Angeles Union Station (Q198019)

• Onestop ID (P11109) → s-9q5ctrwxe7-losangeles
  • transport network (P16) → Amtrak (Q23239)
• Onestop ID (P11109) → s-9q5ctx8rwr-unionstation~metrored~purplelines
  • transport network (P16) → Los Angeles Metro Rail (Q1339558)
  • connecting service (P1192) → B Line (Q2778331)
• Onestop ID (P11109) → s-9q5ctx8nfm-unionstation~metrogoldline
  • transport network (P16) → Los Angeles Metro Rail (Q1339558)
  • connecting service (P1192) → L Line (Q2758718)

Distinct values: this property likely contains a value that is different from all other items. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P11109#Unique value, SPARQL (every item), SPARQL (by value)

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Lakeland (Q14686092)
List of violations of this constraint: Database reports/Constraint violations/P11109#Single value, SPARQL

Type “transport service itinerary (Q1067164), General Transit Feed Specification feed (Q113379415), public transport network (Q18325841), public transport stop (Q548662)”: item must contain property “instance of (P31)” with classes “transport service itinerary (Q1067164), General Transit Feed Specification feed (Q113379415), public transport network (Q18325841), public transport stop (Q548662)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P11109#Type Q1067164, Q113379415, Q18325841, Q548662, SPARQL

Format “[fosr]-([0123456789bcdefghjkmnpqrstuvwxyz]+-)?[\p{Ll}0-9~]+”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P11109#Format, SPARQL

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P11109#Scope, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P11109#Entity types

Onestop IDs are not unique

per this discussion (GitHub), if multiple routes/stops/stations/platforms have the same coordinates and name, then the Onestop ID is the same. Bamyers99 (talk) 21:53, 22 December 2022 (UTC)