feat(transit): name Rio routes from SMTR's published GTFS

SMTR's realtime feeds carry internal route keys, so a Rio card read "Route O0731AAN0A" where riders know line SN731. Join both feeds to the route_short_name in SMTR's static GTFS routes.txt (CC BY 4.0, same publisher and terms). The keys cannot be parsed: O0014AAA0A is LECD135. A 2026-11-04 snapshot found all 282 bus and 21 BRT routes in service in the table; an unknown key still falls through raw. Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-11-12 14:22:21 +00:00 · 2026-11-04 22:49:54 -03:00
1 parent 1b0b4a10dc
commit ad48305dac
@@ -0,0 +1,515 @@
+// src/data/rioRouteNames.js
+/**
+ * Rio de Janeiro route ids to the line a rider would say.
+ *
+ * SMTR's realtime feeds publish internal route keys: the bus feed sends
+ * `O0868AAA0A` for line 868 and `O0731AAN0A` for SN731, and the BRT feed
+ * sends `20000501110` for line 50. The keys look decodable but are not:
+ * `O0014AAA0A` is LECD135, not 14, and nineteen of the plain-looking keys in
+ * the published table break the pattern. The join is the only correct route.
+ *
+ * Generated verbatim (`route_id` to `route_short_name`, 494 routes) from
+ * `routes.txt` in SMTR's static GTFS, https://dados.mobilidade.rio/gtfs/schedule
+ * (CC BY 4.0, the same publisher and terms as the realtime feeds; file dated
+ * 2026-06-10, feed valid 2024-01-01 to 2026-12-31). A 2026-11-04 snapshot of
+ * both realtime feeds, 282 bus and 21 BRT routes in service, found every one
+ * of its route ids here. An id missing from this table falls through
+ * unchanged, so a route added later degrades to its raw key rather than
+ * disappearing.
+ */
+export const RIO_ROUTE_NAMES = Object.freeze({
+  20000101130: '10',
+  20000111110: '11',
+  20000121130: '12',
+  20000131130: '13',
+  20000141130: '14',
+  20000151130: '15',
+  20000161130: '16',
+  20000171110: '17',
+  20000181130: '18',
+  20000191130: '19',
+  20000201130: '20',
+  20000221110: '22',
+  20000251130: '25',
+  20000281130: '28',
+  20000311140: '31',
+  20000351110: '35',
+  20000401130: '40',
+  20000411130: '41',
+  20000421110: '42',
+  20000431130: '43',
+  20000461130: '46',
+  20000501110: '50',
+  20000511110: '51',
+  20000521110: '52',
+  20000531130: '53',
+  20000601110: '60',
+  20000611130: '61',
+  20000671130: '67',
+  20000681130: '68',
+  20000701110: '70',
+  20000731130: '73',
+  20000801110: '80',
+  20000901110: '90',
+  '20000EXEC1110': 'ESP01',
+  E2110AAA0A: '2110',
+  E2111AAA0A: '2111',
+  E2112AAA0A: '2112',
+  E2114AAA0A: '2114',
+  E2303AAA0A: '2303',
+  E2305AAA0A: '2305',
+  E2307AAA0A: '2307',
+  E2308AAA0A: '2308',
+  E2309AAA0A: '2309',
+  E2310AAA0A: '2310',
+  E2334AAA0A: '2334',
+  E2335AAA0A: '2335',
+  E2336AAA0A: '2336',
+  E2337AAA0A: '2337',
+  E2338AAA0A: '2338',
+  E2339AAA0A: '2339',
+  E2342AAA0A: '2342',
+  E2343AAA0A: '2343',
+  E2344AAA0A: '2344',
+  E2345AAA0A: '2345',
+  E2381AAA0A: '2381',
+  E2383AAA0A: '2383',
+  E2613AAA0A: '2613',
+  E2614AAA0A: '2614',
+  E2802AAA0A: '2802',
+  E2803AAA0A: '2803',
+  E2804AAA0A: '2804',
+  O0006AAA0A: '006',
+  O0007AAA0A: '007',
+  O0007AAN0A: 'SN007',
+  O0010AAA0A: '010',
+  O0014AAA0A: 'LECD135',
+  O0100AAA0A: '100',
+  O0104AAA0A: '104',
+  O0104AAN0A: 'SN104',
+  O0107AAA0A: '107',
+  O0109AAA0A: 'LECD131',
+  O0111AAA0A: 'LECD134',
+  O0117AAA0A: '117',
+  O0133AAA0A: '133',
+  O0133AAN0A: 'SN133',
+  O0157AAA0A: 'LECD127',
+  O0160AAA0A: '160',
+  O0161AAA0A: '161',
+  O0162AAA0A: '162',
+  O0164AAA0A: 'LECD136',
+  O0165AAA0A: '165',
+  O0167AAA0A: '167',
+  O0169AAA0A: '169',
+  O0201AAA0A: '201',
+  O0202AAA0A: '202',
+  O0209AAA0A: '209',
+  O0209AAN0A: 'SN209',
+  O0210AAA0A: '210',
+  O0217AAA0A: '217',
+  O0220AAA0A: '220',
+  O0229AAA0A: '229',
+  O0232AAA0A: '232',
+  O0232AAN0A: 'SN232',
+  O0238AAA0A: '238',
+  O0238AAN0A: 'SN238',
+  O0239AAA0A: '239',
+  O0247AAA0A: '247',
+  O0249AAA0A: '249',
+  O0254AAA0A: '254',
+  O0265AAA0A: '265',
+  O0265AAN0A: 'SN265',
+  O0265AAP0A: 'SP265',
+  O0275AAA0A: '275',
+  O0277AAA0A: '277',
+  O0292AAA0A: '292',
+  O0292AAN0A: 'SN292',
+  O0296AAA0A: '296',
+  O0298AAA0A: '298',
+  O0298AAN0A: 'SN298',
+  O0300AAA0A: '300',
+  O0300AAR0A: 'SR300',
+  O0301AAA0A: '301',
+  O0302AAA0A: '302',
+  O0302AAN0A: 'SN302',
+  O0306AAA0A: '306',
+  O0311AAA0A: '311',
+  O0312AAA0A: '312',
+  O0312AAN0A: 'SN312',
+  O0313AAA0A: '313',
+  O0315AAA0A: '315',
+  O0319AAA0A: '319',
+  O0319AAN0A: 'SN319',
+  O0319AAV0A: 'SV319',
+  O0321AAA0A: '321',
+  O0323AAA0A: '323',
+  O0324AAA0A: '324',
+  O0324AAN0A: 'SN324',
+  O0324AAP0A: 'SP324',
+  O0325AAA0A: '325',
+  O0326AAA0A: '326',
+  O0326AAPBA: 'SPB326',
+  O0327AAA0A: '327',
+  O0328AAA0A: '328',
+  O0328AAN0A: 'SN328',
+  O0328AAP0A: 'SP328',
+  O0328AAR0A: 'SR328',
+  O0329AAA0A: '329',
+  O0329AAP0A: 'SP329',
+  O0335AAA0A: '335',
+  O0338AAA0A: '338',
+  O0341AAA0A: '341',
+  O0342AAA0A: '342',
+  O0342AAR0A: 'SR342',
+  O0343AAA0A: '343',
+  O0343AAP0A: 'SP343',
+  O0348AAA0A: '348',
+  O0349AAA0A: '349',
+  O0350AAA0A: '350',
+  O0352AAA0A: '352',
+  O0353AAA0A: '353',
+  O0353AAN0A: 'SN353',
+  O0355AAA0A: '355',
+  O0355AAN0A: 'SN355',
+  O0355AAR0A: 'SR355',
+  O0361AAA0A: '361',
+  O0362AAA0A: '362',
+  O0362AAR0A: 'SR362',
+  O0363AAA0A: '363',
+  O0363AAN0A: 'SN363',
+  O0363AAV0A: 'SV363',
+  O0368AAA0A: '368',
+  O0368AAN0A: 'SN368',
+  O0369AAA0A: '369',
+  O0371AAA0A: '371',
+  O0378AAA0A: '378',
+  O0378AAR0A: 'SR378',
+  O0380AAA0A: '380',
+  O0383AAA0A: '383',
+  O0383AAN0A: 'SN383',
+  O0384AAA0A: '384',
+  O0384AAR0A: 'SR384',
+  O0385AAA0A: '385',
+  O0386AAA0A: '386',
+  O0386AAR0A: 'SR386',
+  O0388AAA0A: '388',
+  O0388AAN0A: 'SN388',
+  O0388AAR0A: 'SR388',
+  O0389AAP0A: 'SP389',
+  O0390AAA0A: '390',
+  O0391AAV0A: 'SV391',
+  O0393AAA0A: '393',
+  O0393AAN0A: 'SN393',
+  O0393AAR0A: 'SR393',
+  O0397AAA0A: '397',
+  O0397AAN0A: 'SN397',
+  O0397AAR0A: 'SR397',
+  O0399AAA0A: '399',
+  O0399AAN0A: 'SN399',
+  O0399AAR0A: 'SR399',
+  O0404AAP0A: 'SP404',
+  O0409AAA0A: '409',
+  O0410AAA0A: '410',
+  O0410AAN0A: 'LECD139',
+  O0415AAA0A: '415',
+  O0415AAN0A: 'SN415',
+  O0416AAA0A: '416',
+  O0422AAA0A: '422',
+  O0422AAN0A: 'SN422',
+  O0426AAA0A: '426',
+  O0433AAA0A: 'LECD150',
+  O0435AAA0A: 'LECD151',
+  O0448AAA0A: '448',
+  O0455AAA0A: '455',
+  O0456AAA0A: 'LECD132',
+  O0457AAA0A: '457',
+  O0457AAN0A: 'SN457',
+  O0461AAA0A: '461',
+  O0472AAA0A: '472',
+  O0473AAA0A: '473',
+  O0474AAA0A: '474',
+  O0474AAN0A: 'SN474',
+  O0474AAV0A: 'SV474',
+  O0475AAA0A: 'LECD133',
+  O0476AAA0A: '476',
+  O0483AAA0A: '483',
+  O0483AAN0A: 'SN483',
+  O0483AAPAA: 'SPA483',
+  O0483AAPBA: 'SPB483',
+  O0483AAV0A: 'SV483',
+  O0484AAA0A: '484',
+  O0485AAA0A: '485',
+  O0485AAP0A: 'SP485',
+  O0486AAA0A: '486',
+  O0492AAA0A: '492',
+  O0497AAA0A: '497',
+  O0497AAN0A: 'SN497',
+  O0498AAA0A: '498',
+  O0507AAA0A: '507',
+  O0513AAA0A: '513',
+  O0518AAA0A: '518',
+  O0519AAA0A: '519',
+  O0536AAA0A: 'LECD138',
+  O0539AAA0A: '539',
+  O0550AAA0A: '550',
+  O0550AAN0A: 'SN550',
+  O0550AAPAA: 'SPA550',
+  O0550AAPBA: 'SPB550',
+  O0552AAA0A: '552',
+  O0552AAN0A: 'LECD149',
+  O0553AAA0A: '553',
+  O0554AAA0A: '554',
+  O0554AAN0A: 'SN554',
+  O0555AAA0A: '555',
+  O0557AAA0A: '557',
+  O0565AAA0A: '565',
+  O0565AAN0A: 'SN565',
+  O0583AAA0A: '583',
+  O0584AAA0A: '584',
+  O0585AAA0A: '585',
+  O0600AAA0A: '600',
+  O0600AAN0A: 'SN600',
+  O0601AAA0A: '601',
+  O0603AAA0A: '603',
+  O0606AAA0A: '606',
+  O0606AAV0A: 'SV606',
+  O0607AAA0A: '607',
+  O0608AAA0A: '608',
+  O0610AAA0A: '610',
+  O0611AAA0A: '611',
+  O0613AAA0A: '613',
+  O0613AAPAA: 'SPA613',
+  O0614AAA0A: '614',
+  O0616AAA0A: '616',
+  O0621AAA0A: '621',
+  O0622AAA0A: '622',
+  O0623AAA0A: '623',
+  O0624AAA0A: '624',
+  O0624AAN0A: 'SN624',
+  O0624AAV0A: 'SV624',
+  O0625AAA0A: '625',
+  O0626AAA0A: '626',
+  O0627AAA0A: '627',
+  O0628AAA0A: '628',
+  O0629AAA0A: '629',
+  O0629AAN0A: 'SN629',
+  O0630AAA0A: '630',
+  O0634AAA0A: '634',
+  O0635AAA0A: '635',
+  O0635AAP0A: 'SP635',
+  O0636AAA0A: '636',
+  O0636AAN0A: 'SN636',
+  O0638AAA0A: '638',
+  O0639AAA0A: '639',
+  O0639AAN0A: 'SN639',
+  O0645AAA0A: '645',
+  O0649AAA0A: 'LECD126',
+  O0650AAA0A: '650',
+  O0651AAA0A: '651',
+  O0652AAA0A: '652',
+  O0653AAA0A: '653',
+  O0663AAA0A: '663',
+  O0665AAA0A: '665',
+  O0665AAVAA: 'LECD147',
+  O0665AAVBA: 'SVB665',
+  O0669AAA0A: '669',
+  O0669AAV0A: 'SV669',
+  O0678AAA0A: '678',
+  O0679AAA0A: '679',
+  O0685AAA0A: 'LECD140',
+  O0685AAVAA: 'LECD148',
+  O0685AAVBA: 'LECD141',
+  O0687AAA0A: '687',
+  O0688AAA0A: '688',
+  O0691AAA0A: '691',
+  O0692AAA0A: '692',
+  O0692AAV0A: 'SV692',
+  O0693AAA0A: '693',
+  O0696AAA0A: '696',
+  O0696AAN0A: 'SN696',
+  O0711AAA0A: '711',
+  O0712AAA0A: '712',
+  O0721AAA0A: '721',
+  O0731AAA0A: '731',
+  O0731AAN0A: 'SN731',
+  O0737AAA0A: '737',
+  O0741AAA0A: '741',
+  O0743AAA0A: '743',
+  O0745AAA0A: '745',
+  O0746AAA0A: '746',
+  O0753AAA0A: '753',
+  O0754AAA0A: '754',
+  O0756AAA0A: '756',
+  O0757AAA0A: '757',
+  O0759AAA0A: '759',
+  O0759AAP0A: 'SP759',
+  O0764AAA0A: '764',
+  O0765AAA0A: '765',
+  O0766AAA0A: '766',
+  O0766AAP0A: 'SP766',
+  O0770AAA0A: '770',
+  O0771AAA0A: '771',
+  O0774AAA0A: '774',
+  O0774AAV0A: 'LECD142',
+  O0775AAA0A: '775',
+  O0777AAV0A: 'SV777',
+  O0778AAA0A: '778',
+  O0779AAA0A: '779',
+  O0779AAN0A: 'SN779',
+  O0780AAA0A: '780',
+  O0783AAA0A: '783',
+  O0785AAA0A: '785',
+  O0786AAA0A: '786',
+  O0788AAA0A: '788',
+  O0790AAA0A: '790',
+  O0790AAN0A: 'SN790',
+  O0790AAV0A: 'SV790',
+  O0791AAA0A: '791',
+  O0793AAA0A: '793',
+  O0794AAA0A: '794',
+  O0794AAN0A: 'SN794',
+  O0795AAP0A: 'SP795',
+  O0796AAA0A: '796',
+  O0798AAA0A: '798',
+  O0799AAA0A: '799',
+  O0801AAA0A: '801',
+  O0801AAP0A: 'SP801',
+  O0802AAA0A: '802',
+  O0803AAA0A: '803',
+  O0803AAN0A: 'SN803',
+  O0803AAP0A: 'SP803',
+  O0804AAA0A: '804',
+  O0805AAA0A: '805',
+  O0805AAN0A: 'SN805',
+  O0805AAP0A: 'SP805',
+  O0807AAA0A: '807',
+  O0808AAA0A: '808',
+  O0809AAA0A: '809',
+  O0810AAA0A: '810',
+  O0810AAN0A: 'SN810',
+  O0810AAP0A: 'SP810',
+  O0812AAA0A: '812',
+  O0817AAA0A: '817',
+  O0819AAA0A: '819',
+  O0820AAA0A: '820',
+  O0821AAA0A: '821',
+  O0821AAN0A: 'SN821',
+  O0822AAA0A: '822',
+  O0825AAA0A: '825',
+  O0825AAN0A: 'SN825',
+  O0826AAA0A: '826',
+  O0829AAA0A: '829',
+  O0830AAA0A: '830',
+  O0831AAA0A: '831',
+  O0831AAV0A: 'SV831',
+  O0833AAA0A: '833',
+  O0834AAA0A: '834',
+  O0835AAA0A: '835',
+  O0836AAA0A: '836',
+  O0837AAA0A: '837',
+  O0838AAA0A: '838',
+  O0840AAA0A: '840',
+  O0840AAN0A: 'SN840',
+  O0841AAA0A: '841',
+  O0842AAA0A: '842',
+  O0843AAA0A: '843',
+  O0844AAA0A: '844',
+  O0845AAA0A: '845',
+  O0846AAA0A: '846',
+  O0846AAN0A: 'SN846',
+  O0847AAA0A: '847',
+  O0848AAA0A: '848',
+  O0848AAN0A: 'SN848',
+  O0849AAA0A: '849',
+  O0850AAA0A: '850',
+  O0851AAA0A: '851',
+  O0852AAA0A: '852',
+  O0853AAA0A: '853',
+  O0853AAN0A: 'SN853',
+  O0853AAV0A: 'SV853',
+  O0854AAAAA: '854',
+  O0855AAA0A: '855',
+  O0856AAA0A: '856',
+  O0857AAA0A: '857',
+  O0857AAN0A: 'SN857',
+  O0859AAA0A: '859',
+  O0861AAA0A: '861',
+  O0861AAN0A: 'SN861',
+  O0862AAA0A: '862',
+  O0863AAA0A: '863',
+  O0863AAV0A: 'SV863',
+  O0864AAA0A: '864',
+  O0864AAP0A: 'SP864',
+  O0865AAA0A: '865',
+  O0866AAA0A: '866',
+  O0866AAV0A: 'SV866',
+  O0867AAA0A: '867',
+  O0867AAN0A: 'SN867',
+  O0868AAA0A: '868',
+  O0869AAA0A: '869',
+  O0870AAA0A: '870',
+  O0871AAA0A: '871',
+  O0872AAA0A: '872',
+  O0878AAA0A: '878',
+  O0878AAN0A: 'SN878',
+  O0878AAV0A: 'SV878',
+  O0880AAA0A: '880',
+  O0880AAN0A: 'SN880',
+  O0881AAA0A: '881',
+  O0883AAA0A: '883',
+  O0884AAA0A: '884',
+  O0884AAN0A: 'SN884',
+  O0885AAA0A: '885',
+  O0885AAN0A: 'SN885',
+  O0892AAA0A: '892',
+  O0893AAA0A: '893',
+  O0893AAN0A: 'SN893',
+  O0894AAA0A: '894',
+  O0895AAA0A: '895',
+  O0895AAN0A: 'SN895',
+  O0897AAA0A: '897',
+  O0897AAN0A: 'SN897',
+  O0898AAA0A: '898',
+  O0898AAN0A: 'SN898',
+  O0899AAA0A: '899',
+  O0899AAV0A: 'SV899',
+  O0900AAA0A: '900',
+  O0901AAA0A: '901',
+  O0901AAVBA: 'SVB901',
+  O0905AAA0A: '905',
+  O0906AAA0A: '906',
+  O0908AAA0A: '908',
+  O0908AAN0A: 'SN908',
+  O0908AAV0A: 'SV908',
+  O0910AAA0A: '910',
+  O0913AAA0A: '913',
+  O0915AAA0A: '915',
+  O0917AAA0A: '917',
+  O0917AAV0A: 'SV917',
+  O0918AAA0A: '918',
+  O0918AAP0A: 'SP918',
+  O0919AAA0A: '919',
+  O0919AAN0A: 'SN919',
+  O0920AAA0A: '920',
+  O0921AAA0A: '921',
+  O0921AAV0A: 'SV921',
+  O0922AAA0A: '922',
+  O0922AAV0A: 'SV922',
+  O0925AAA0A: '925',
+  O0926AAA0A: '926',
+  O0928AAA0A: '928',
+  O0932AAA0A: '932',
+  O0940AAA0A: '940',
+  O0944AAA0A: 'LECD143',
+  O0946AAA0A: '946',
+  O0950AAA0A: 'LECD144',
+  O0951AAA0A: 'LECD145',
+  O0954AAA0A: '954',
+  O0954AAN0A: 'SN954',
+  O0959AAA0A: 'LECD146',
+  O0961AAA0A: '961',
+  O0975AAA0A: '975',
+  O0979AAA0A: '979',
+  O0987AAA0A: '987',
+  O0990AAA0A: '990',
+});
@@ -1,4 +1,5 @@
 import { greatCircleKm } from '../geoDistance.js';
+import { RIO_ROUTE_NAMES } from './rioRouteNames.js';

 /**
 * @module transitFeeds
@@ -376,6 +377,18 @@ function burlingtonRouteLabel(routeId) {
  return BURLINGTON_ROUTE_NAMES[routeId] || routeId;
 }

+/**
+ * Rio route key to the line a rider would say, for both SMTR feeds: one
+ * published `routes.txt` covers the buses and the BRT (see rioRouteNames.js).
+ * @param {string|null} routeId
+ * @returns {string|null}
+ */
+function rioRouteLabel(routeId) {
+  return Object.hasOwn(RIO_ROUTE_NAMES, routeId)
+    ? RIO_ROUTE_NAMES[routeId]
+    : routeId;
+}
+
 /**
 * Registry of feeds. Order is presentation order in the stats/credit text.
 * `loadRadiusKm` is the distance from `center` inside which the feed is polled.
@@ -752,10 +765,11 @@ export const TRANSIT_FEED_REGISTRY = Object.freeze([
    terms: Object.freeze({
      quote:
        'This work is licensed under a Creative Commons Attribution 4.0 International License',
-      note: 'The data.rio catalog page labels the feed [beta] and states a gateway limit of 5 requests a second and 60 a minute behind a 10-second cache, which the 15-second proxy TTL stays inside. It is the named replacement for the JSON GPS endpoints SMTR deprecated on 2026-10-07 and says it will switch off by 2026-11-30. SMTR relays the concessionaires’ ITS data and repairs trips with its own matching; the page places accuracy with the suppliers. Speeds arrive in km/h, not m/s (a 2026-10-29 snapshot peaked at 89), hence `speedUnit`. Route ids are internal keys: `O0313AAA0A` carried service 313 in the same day’s JSON feed. They are shown raw until a published table is joined.',
+      note: 'The data.rio catalog page labels the feed [beta] and states a gateway limit of 5 requests a second and 60 a minute behind a 10-second cache, which the 15-second proxy TTL stays inside. It is the named replacement for the JSON GPS endpoints SMTR deprecated on 2026-10-07 and says it will switch off by 2026-11-30. SMTR relays the concessionaires’ ITS data and repairs trips with its own matching; the page places accuracy with the suppliers. Speeds arrive in km/h, not m/s (a 2026-10-29 snapshot peaked at 89), hence `speedUnit`. Route ids are internal keys (`O0731AAN0A` is line SN731) and are joined to the line names in SMTR’s published GTFS `routes.txt`, under the same CC BY 4.0 terms.',
    }),
    defaultMode: 'bus',
    speedUnit: 'kmh',
+    routeLabel: rioRouteLabel,
  }),
  Object.freeze({
    id: 'smtr-rio-brt',
@@ -774,10 +788,11 @@ export const TRANSIT_FEED_REGISTRY = Object.freeze([
    terms: Object.freeze({
      quote:
        'This work is licensed under a Creative Commons Attribution 4.0 International License',
-      note: 'Same catalog terms, [beta] label and gateway limits as the bus feed. The fleet is operated by Mobi-Rio and tracked by SONDA, whose data SMTR relays. Speeds are km/h here too (peak 62 in the same snapshot). Route ids are opaque (`20000461130`) and are shown raw.',
+      note: 'Same catalog terms, [beta] label and gateway limits as the bus feed. The fleet is operated by Mobi-Rio and tracked by SONDA, whose data SMTR relays. Speeds are km/h here too (peak 62 in the same snapshot). Route ids are opaque (`20000501110` is line 50) and are joined to the same `routes.txt` as the buses.',
    }),
    defaultMode: 'bus',
    speedUnit: 'kmh',
+    routeLabel: rioRouteLabel,
  }),
 ]);

@@ -15,6 +15,7 @@ import {
  transitModeResolved,
  transitRouteLabel,
 } from './transitFeeds.js';
+import { RIO_ROUTE_NAMES } from './rioRouteNames.js';

 test('every registered feed is keyless, https, licensed, and uniquely identified', () => {
  const ids = new Set();
@@ -504,6 +505,36 @@ test('Rio buses and BRT cover the city from Centro to Santa Cruz, and not São P
  );
 });

+test('Rio route keys read as the line on the front of the bus', () => {
+  // SMTR publishes internal keys. Plain keys carry the number (`O0868AAA0A`
+  // is 868), variants carry a prefix (`O0731AAN0A` is SN731), and some plain
+  // keys are traps: `O0014AAA0A` is LECD135, so the table is joined, not parsed.
+  const buses = getTransitFeed('smtr-rio-onibus');
+  assert.equal(transitRouteLabel(buses, 'O0868AAA0A'), '868');
+  assert.equal(transitRouteLabel(buses, 'O0731AAN0A'), 'SN731');
+  assert.equal(transitRouteLabel(buses, 'O0759AAP0A'), 'SP759');
+  assert.equal(transitRouteLabel(buses, 'O0014AAA0A'), 'LECD135');
+  assert.equal(transitRouteLabel(buses, 'E2303AAA0A'), '2303');
+  const brt = getTransitFeed('smtr-rio-brt');
+  assert.equal(transitRouteLabel(brt, '20000501110'), '50');
+  assert.equal(transitRouteLabel(brt, '20000EXEC1110'), 'ESP01');
+  // A route added after the table was built keeps its raw key, never a blank
+  // or a name borrowed from the prototype chain.
+  assert.equal(transitRouteLabel(buses, 'O9999AAA0A'), 'O9999AAA0A');
+  assert.equal(transitRouteLabel(buses, 'constructor'), 'constructor');
+  assert.equal(transitRouteLabel(brt, null), null);
+});
+
+test('the Rio route table is a clean join of published keys to names', () => {
+  const entries = Object.entries(RIO_ROUTE_NAMES);
+  assert.ok(entries.length > 400, 'the whole published table is carried');
+  for (const [id, name] of entries) {
+    assert.match(id, /^(?:[OE]\d{4}[A-Z0-9]{5}|2\d{4}[A-Z0-9]{4,8})$/, id);
+    assert.ok(name && name === name.trim(), `${id} has a name`);
+    assert.notEqual(name, id, `${id} is translated`);
+  }
+});
+
 test('Rio feeds are CC BY 4.0, live, and declare the km/h speeds they publish', () => {
  for (const id of ['smtr-rio-onibus', 'smtr-rio-brt']) {
    const feed = getTransitFeed(id);