{"id":"https://openalex.org/W2571998221","doi":"https://doi.org/10.3141/2614-01","title":"Trends Over Two Decades of Transportation Research","display_name":"Trends Over Two Decades of Transportation Research","publication_year":2017,"publication_date":"2017-01-01","ids":{"openalex":"https://openalex.org/W2571998221","doi":"https://doi.org/10.3141/2614-01","mag":"2571998221"},"language":"en","primary_location":{"id":"doi:10.3141/2614-01","doi":"https://doi.org/10.3141/2614-01","is_oa":false,"landing_page_url":"https://doi.org/10.3141/2614-01","pdf_url":null,"source":{"id":"https://openalex.org/S145575934","display_name":"Transportation Research Record Journal of the Transportation Research Board","issn_l":"0361-1981","issn":["0361-1981","2169-4052"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["abdc-b","anvur-scientific","cwts-core","dongbi-b","jufo-1","norway-1","poland-40","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320017","host_organization_name":"SAGE Publishing","host_organization_lineage":["https://openalex.org/P4310320017"],"host_organization_lineage_names":["SAGE Publishing"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Transportation Research Record: Journal of the Transportation Research Board","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"Ryan C. Boyer","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I51556381","display_name":"University of Virginia","ror":"https://ror.org/0153tk833","country_code":"US","type":"education","lineage":["https://openalex.org/I51556381"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Ryan C. Boyer","raw_affiliation_strings":["Department of Systems and Information Engineering, School of Engineering and Applied Science, University of Virginia, 151 Engineers Way, P.O. Box 400747, Charlottesville, VA 22904-4747"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Systems and Information Engineering, School of Engineering and Applied Science, University of Virginia, 151 Engineers Way, P.O. Box 400747, Charlottesville, VA 22904-4747","institution_ids":["https://openalex.org/I51556381"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5051468788","display_name":"William T. Scherer","orcid":"https://orcid.org/0000-0002-1069-7898","observed_orcids":["https://orcid.org/0000-0002-1069-7898"]},"institutions":[{"id":"https://openalex.org/I51556381","display_name":"University of Virginia","ror":"https://ror.org/0153tk833","country_code":"US","type":"education","lineage":["https://openalex.org/I51556381"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"William T. Scherer","raw_affiliation_strings":["Department of Systems and Information Engineering, School of Engineering and Applied Science, University of Virginia, 151 Engineers Way, P.O. Box 400747, Charlottesville, VA 22904-4747"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Systems and Information Engineering, School of Engineering and Applied Science, University of Virginia, 151 Engineers Way, P.O. Box 400747, Charlottesville, VA 22904-4747","institution_ids":["https://openalex.org/I51556381"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101971324","display_name":"Michael C. Smith","orcid":"https://orcid.org/0000-0002-1200-0855","observed_orcids":["https://orcid.org/0000-0002-1200-0855"]},"institutions":[{"id":"https://openalex.org/I51556381","display_name":"University of Virginia","ror":"https://ror.org/0153tk833","country_code":"US","type":"education","lineage":["https://openalex.org/I51556381"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Michael C. Smith","raw_affiliation_strings":["Department of Systems and Information Engineering, School of Engineering and Applied Science, University of Virginia, 151 Engineers Way, P.O. Box 400747, Charlottesville, VA 22904-4747"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Systems and Information Engineering, School of Engineering and Applied Science, University of Virginia, 151 Engineers Way, P.O. Box 400747, Charlottesville, VA 22904-4747","institution_ids":["https://openalex.org/I51556381"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I51556381"],"apc_list":{"value":3650,"currency":"USD","value_usd":3650},"apc_paid":null,"fwci":8.4247,"has_fulltext":false,"cited_by_count":18,"citation_normalized_percentile":{"value":0.96976696,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":98},"biblio":{"volume":"2614","issue":"1","first_page":"1","last_page":"9"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10102","display_name":"scientometrics and bibliometrics research","score":0.6172000169754028,"subfield":{"id":"https://openalex.org/subfields/3309","display_name":"Library and Information Sciences"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10102","display_name":"scientometrics and bibliometrics research","score":0.6172000169754028,"subfield":{"id":"https://openalex.org/subfields/3309","display_name":"Library and Information Sciences"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T13527","display_name":"Road Transport and Highway Systems","score":0.08640000224113464,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13284","display_name":"Psychology Research and Bibliometrics","score":0.06790000200271606,"subfield":{"id":"https://openalex.org/subfields/3205","display_name":"Experimental and Cognitive Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/topic-modeling","display_name":"topic modeling","score":0.734000027179718},{"id":"https://openalex.org/keywords/research-topics","display_name":"research topics","score":0.5270000100135803},{"id":"https://openalex.org/keywords/alternative-transportation","display_name":"alternative transportation","score":0.7289999723434448},{"id":"https://openalex.org/keywords/car-sharing","display_name":"car sharing","score":0.9089999794960022},{"id":"https://openalex.org/keywords/bicycle-transportation","display_name":"bicycle transportation","score":0.6069999933242798},{"id":"https://openalex.org/keywords/bus-transit","display_name":"bus transit","score":0.6959999799728394},{"id":"https://openalex.org/keywords/mobile-technology","display_name":"mobile technology","score":0.9049999713897705},{"id":"https://openalex.org/keywords/international-research-collaboration","display_name":"international research collaboration","score":0.6499999761581421},{"id":"https://openalex.org/keywords/infrastructure-research","display_name":"infrastructure research","score":0.6570000052452087},{"id":"https://openalex.org/keywords/pavement-research","display_name":"pavement research","score":0.6259999871253967},{"id":"https://openalex.org/keywords/bridges","display_name":"bridges","score":0.49000000953674316}],"concepts":[{"id":"https://openalex.org/C18762648","wikidata":"https://www.wikidata.org/wiki/Q42213","display_name":"Work (physics)","level":2,"score":0.61658775806427},{"id":"https://openalex.org/C22212356","wikidata":"https://www.wikidata.org/wiki/Q775325","display_name":"Transport engineering","level":1,"score":0.517581582069397},{"id":"https://openalex.org/C191935318","wikidata":"https://www.wikidata.org/wiki/Q148","display_name":"China","level":2,"score":0.5032986998558044},{"id":"https://openalex.org/C148383697","wikidata":"https://www.wikidata.org/wiki/Q1781695","display_name":"Regional science","level":1,"score":0.3969595432281494},{"id":"https://openalex.org/C42475967","wikidata":"https://www.wikidata.org/wiki/Q194292","display_name":"Operations research","level":1,"score":0.3864452540874481},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.32420092821121216},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.22908958792686462},{"id":"https://openalex.org/C78519656","wikidata":"https://www.wikidata.org/wiki/Q101333","display_name":"Mechanical engineering","level":1,"score":0.0},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.3141/2614-01","doi":"https://doi.org/10.3141/2614-01","is_oa":false,"landing_page_url":"https://doi.org/10.3141/2614-01","pdf_url":null,"source":{"id":"https://openalex.org/S145575934","display_name":"Transportation Research Record Journal of the Transportation Research Board","issn_l":"0361-1981","issn":["0361-1981","2169-4052"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["abdc-b","anvur-scientific","cwts-core","dongbi-b","jufo-1","norway-1","poland-40","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320017","host_organization_name":"SAGE Publishing","host_organization_lineage":["https://openalex.org/P4310320017"],"host_organization_lineage_names":["SAGE Publishing"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Transportation Research Record: Journal of the Transportation Research Board","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/9","score":0.8970999717712402,"display_name":"Industry, innovation and infrastructure"},{"id":"https://metadata.un.org/sdg/11","score":0.4000000059604645,"display_name":"Sustainable cities and communities"}],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320315305","display_name":"Virginia Department of Transportation","ror":"https://ror.org/04n8zmx34"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":9,"referenced_works":["https://openalex.org/W17009997","https://openalex.org/W119007586","https://openalex.org/W2035082722","https://openalex.org/W2084232036","https://openalex.org/W2174706414","https://openalex.org/W2212847588","https://openalex.org/W2287139952","https://openalex.org/W2338179207","https://openalex.org/W4233535930"],"related_works":["https://openalex.org/W2580318018","https://openalex.org/W7082991560","https://openalex.org/W4224042337","https://openalex.org/W3183834873","https://openalex.org/W4409180748","https://openalex.org/W4412573087","https://openalex.org/W2906570840","https://openalex.org/W7062674785","https://openalex.org/W4416792848","https://openalex.org/W3034930344"],"abstract_inverted_index":{"This":[0,21,190],"paper":[1,22],"expands":[2],"on":[3,114,159],"previous":[4,25],"work":[5,26],"that":[6,103,225],"used":[7,53],"topic":[8,56,100],"models":[9],"to":[10,195,206],"characterize":[11],"transportation":[12,104,119],"research":[13,87,105,201,210,216,223],"as":[14,122],"evidenced":[15],"by":[16,27,73,188],"TRB":[17,66,144],"annual":[18],"meeting":[19],"papers.":[20,142],"advances":[23],"the":[24,35,55,62,65,71,77,94,99,138,183,196,200,220],"identifying":[28],"trends":[29],"over":[30,93],"a":[31,42,179],"longer":[32],"period,":[33],"exploring":[34],"papers":[36,51,67,81,148,154,186],"in":[37,54,91,140,217],"greater":[38],"depth,":[39],"and":[40,68,110,116,125,128,130,161,168,170,172,203],"offering":[41],"more":[43,108,111,147,227],"comprehensive":[44],"analysis.":[45],"Almost":[46],"two":[47],"decades":[48],"(1998\u20132016)":[49],"of":[50,64,79,86,182,185,199,219],"were":[52],"model":[57,101],"presented":[58],"here,":[59],"which":[60],"identified":[61],"themes":[63],"then":[69],"sorted":[70],"documents":[72],"these":[74],"themes.":[75],"Because":[76],"number":[78],"accepted":[80,141,146,187],"has":[82,145,174],"increased,":[83],"most":[84],"areas":[85],"have":[88],"also":[89],"increased":[90,175],"volume":[92],"past":[95],"19":[96],"years.":[97],"However,":[98],"suggests":[102],"is":[106,133,177],"becoming":[107],"holistic":[109],"global.":[112],"Research":[113,158],"energy":[115],"fuel;":[117],"alternative":[118],"modes":[120],"such":[121],"carsharing,":[123],"bicycles,":[124],"buses;":[126],"accessibility":[127],"health;":[129],"mobile":[131],"technology":[132],"growing":[134,222],"much":[135],"faster":[136],"than":[137],"increase":[139],"Additionally,":[143],"from":[149,156],"international":[150],"sources,":[151],"with":[152,212],"many":[153],"coming":[155],"China.":[157],"construction":[160],"infrastructure,":[162],"particularly":[163],"pavements,":[164],"bridges,":[165],"pipes,":[166],"signs":[167],"markings,":[169],"barriers":[171],"guardrails,":[173],"but":[176],"now":[178],"smaller":[180],"proportion":[181],"body":[184],"TRB.":[189],"change":[191],"may":[192],"be":[193],"attributable":[194],"high":[197],"cost":[198],"laboratories":[202],"facilities":[204],"needed":[205],"carry":[207],"out":[208],"infrastructure":[209],"compared":[211],"costs":[213],"for":[214],"supporting":[215],"some":[218],"rapidly":[221],"fields":[224],"are":[226],"information":[228],"intensive.":[229]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":5},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1}],"updated_date":"2026-10-01T08:54:57.152042","created_date":"2017-01-26T00:00:00"}
