{"id":"https://openalex.org/W2040373604","doi":"https://doi.org/10.1080/15472450902858400","title":"Impacts of Sensor Spacing on Accurate Freeway Travel Time Estimation for Traveler Information","display_name":"Impacts of Sensor Spacing on Accurate Freeway Travel Time Estimation for Traveler Information","publication_year":2009,"publication_date":"2009-04-30","ids":{"openalex":"https://openalex.org/W2040373604","doi":"https://doi.org/10.1080/15472450902858400","mag":"2040373604"},"language":"en","primary_location":{"id":"doi:10.1080/15472450902858400","is_oa":false,"landing_page_url":"https://doi.org/10.1080/15472450902858400","pdf_url":null,"source":{"id":"https://openalex.org/S172631016","display_name":"Journal of Intelligent Transportation Systems","issn_l":"1547-2442","issn":["1547-2442","1547-2450"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547"],"host_organization_lineage_names":["Taylor & Francis"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Intelligent Transportation Systems","raw_type":"journal-article"},"type":"article","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":"https://openalex.org/A5037182382","display_name":"Robert L. Bertini","orcid":"https://orcid.org/0000-0001-5580-5293"},"institutions":[{"id":"https://openalex.org/I126345244","display_name":"Portland State University","ror":"https://ror.org/00yn2fy02","country_code":"US","type":"education","lineage":["https://openalex.org/I126345244"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Robert L. Bertini","raw_affiliation_strings":["a   Department of Civil and Environmental Engineering, Nohad A. Toulan School of Urban Studies and Planning , Portland State University , Portland, Oregon,  USA","Department of Civil and Environmental Engineering, Nohad A. Toulan School of Urban Studies and Planning , Portland State University , Portland, Oregon, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"a   Department of Civil and Environmental Engineering, Nohad A. Toulan School of Urban Studies and Planning , Portland State University , Portland, Oregon,  USA","institution_ids":["https://openalex.org/I126345244"]},{"raw_affiliation_string":"Department of Civil and Environmental Engineering, Nohad A. Toulan School of Urban Studies and Planning , Portland State University , Portland, Oregon, USA","institution_ids":["https://openalex.org/I126345244"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5018083949","display_name":"David J. Lovell","orcid":"https://orcid.org/0000-0001-8480-1910"},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"David J. Lovell","raw_affiliation_strings":["b   Department of Civil and Environmental Engineering , Institute for Systems Research, University of Maryland , College Park, Maryland,  USA","Department of Civil and Environmental Engineering , Institute for Systems Research, University of Maryland , College Park, Maryland, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"b   Department of Civil and Environmental Engineering , Institute for Systems Research, University of Maryland , College Park, Maryland,  USA","institution_ids":["https://openalex.org/I66946132"]},{"raw_affiliation_string":"Department of Civil and Environmental Engineering , Institute for Systems Research, University of Maryland , College Park, Maryland, USA","institution_ids":["https://openalex.org/I66946132"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":4.8187,"has_fulltext":false,"cited_by_count":29,"citation_normalized_percentile":{"value":0.9408992,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"13","issue":"2","first_page":"97","last_page":"110"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11344","display_name":"Traffic Prediction and Management Techniques","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2215","display_name":"Building and Construction"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11344","display_name":"Traffic Prediction and Management Techniques","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2215","display_name":"Building and Construction"},"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/T10524","display_name":"Traffic control and management","score":0.9994000196456909,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems 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/T10698","display_name":"Transportation Planning and Optimization","score":0.9983999729156494,"subfield":{"id":"https://openalex.org/subfields/3313","display_name":"Transportation"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/travel-time","display_name":"Travel time","score":0.6243255138397217},{"id":"https://openalex.org/keywords/transport-engineering","display_name":"Transport engineering","score":0.5781055688858032},{"id":"https://openalex.org/keywords/range","display_name":"Range (aeronautics)","score":0.5766390562057495},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5219444632530212},{"id":"https://openalex.org/keywords/aggregate","display_name":"Aggregate (composite)","score":0.48277702927589417},{"id":"https://openalex.org/keywords/traffic-flow","display_name":"Traffic flow (computer networking)","score":0.4693663418292999},{"id":"https://openalex.org/keywords/detector","display_name":"Detector","score":0.440030038356781},{"id":"https://openalex.org/keywords/traffic-congestion","display_name":"Traffic congestion","score":0.43106651306152344},{"id":"https://openalex.org/keywords/variable","display_name":"Variable (mathematics)","score":0.42850616574287415},{"id":"https://openalex.org/keywords/estimation","display_name":"Estimation","score":0.417391836643219},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.36221760511398315},{"id":"https://openalex.org/keywords/operations-research","display_name":"Operations research","score":0.3525964021682739},{"id":"https://openalex.org/keywords/simulation","display_name":"Simulation","score":0.3341500759124756},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.2628854513168335},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.11264976859092712},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.10349202156066895},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.09273204207420349}],"concepts":[{"id":"https://openalex.org/C2985733770","wikidata":"https://www.wikidata.org/wiki/Q1233007","display_name":"Travel time","level":2,"score":0.6243255138397217},{"id":"https://openalex.org/C22212356","wikidata":"https://www.wikidata.org/wiki/Q775325","display_name":"Transport engineering","level":1,"score":0.5781055688858032},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.5766390562057495},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5219444632530212},{"id":"https://openalex.org/C4679612","wikidata":"https://www.wikidata.org/wiki/Q866298","display_name":"Aggregate (composite)","level":2,"score":0.48277702927589417},{"id":"https://openalex.org/C207512268","wikidata":"https://www.wikidata.org/wiki/Q3074551","display_name":"Traffic flow (computer networking)","level":2,"score":0.4693663418292999},{"id":"https://openalex.org/C94915269","wikidata":"https://www.wikidata.org/wiki/Q1834857","display_name":"Detector","level":2,"score":0.440030038356781},{"id":"https://openalex.org/C2779888511","wikidata":"https://www.wikidata.org/wiki/Q244156","display_name":"Traffic congestion","level":2,"score":0.43106651306152344},{"id":"https://openalex.org/C182365436","wikidata":"https://www.wikidata.org/wiki/Q50701","display_name":"Variable (mathematics)","level":2,"score":0.42850616574287415},{"id":"https://openalex.org/C96250715","wikidata":"https://www.wikidata.org/wiki/Q965330","display_name":"Estimation","level":2,"score":0.417391836643219},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.36221760511398315},{"id":"https://openalex.org/C42475967","wikidata":"https://www.wikidata.org/wiki/Q194292","display_name":"Operations research","level":1,"score":0.3525964021682739},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.3341500759124756},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2628854513168335},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.11264976859092712},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.10349202156066895},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.09273204207420349},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.0},{"id":"https://openalex.org/C201995342","wikidata":"https://www.wikidata.org/wiki/Q682496","display_name":"Systems engineering","level":1,"score":0.0},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1080/15472450902858400","is_oa":false,"landing_page_url":"https://doi.org/10.1080/15472450902858400","pdf_url":null,"source":{"id":"https://openalex.org/S172631016","display_name":"Journal of Intelligent Transportation Systems","issn_l":"1547-2442","issn":["1547-2442","1547-2450"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547"],"host_organization_lineage_names":["Taylor & Francis"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Intelligent Transportation Systems","raw_type":"journal-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.595.2454","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.595.2454","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://web.pdx.edu/~bertini/papers/Travel_Time_JITS.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure","score":0.6200000047683716}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W32452329","https://openalex.org/W638527440","https://openalex.org/W1671721960","https://openalex.org/W1976495514","https://openalex.org/W1997227899","https://openalex.org/W2003404844","https://openalex.org/W2011369912","https://openalex.org/W2061791964","https://openalex.org/W2070314665","https://openalex.org/W2073611960","https://openalex.org/W2121241697","https://openalex.org/W2123157647","https://openalex.org/W4230223302","https://openalex.org/W4249948419"],"related_works":["https://openalex.org/W2023578311","https://openalex.org/W1833397253","https://openalex.org/W4214841405","https://openalex.org/W1800639126","https://openalex.org/W2370273288","https://openalex.org/W2368441895","https://openalex.org/W3103272396","https://openalex.org/W306695940","https://openalex.org/W2361581724","https://openalex.org/W1824559555"],"abstract_inverted_index":{"Travel-time":[0],"estimation":[1,37],"is":[2,64,109],"a":[3,48,100,112],"critical":[4],"ingredient":[5],"for":[6,27,38,57,111,124,135],"transportation":[7],"management":[8],"and":[9,13,17,30,72,127],"traveler":[10],"information\u2014both":[11],"infrastructure-based":[12],"in-vehicle.":[14],"Infrastructure":[15],"managers":[16],"operators":[18],"are":[19,88,130,138],"interested":[20],"in":[21],"estimating":[22],"optimal":[23,59],"freeway":[24,34],"sensor":[25,60],"density":[26],"new":[28],"construction":[29],"retrofits.":[31],"Focusing":[32],"on":[33,40,66],"travel":[35,75],"time":[36,76],"display":[39],"roadside":[41],"variable":[42],"message":[43],"signs,":[44],"this":[45],"article":[46],"describes":[47],"concept":[49],"developed":[50,104],"from":[51,105],"first":[52],"principles":[53],"of":[54,70,74,115,119],"traffic":[55,92],"flow":[56],"establishing":[58],"density.":[61],"The":[62],"method":[63,121],"based":[65],"computing":[67],"the":[68,82,120],"magnitude":[69],"under-":[71],"overprediction":[73],"during":[77],"shock":[78],"passages":[79],"when":[80],"using":[81],"midpoint":[83],"method.":[84],"Two":[85],"case":[86],"studies":[87],"presented":[89],"considering":[90],"representative":[91],"dynamics":[93],"situations.":[94],"Along":[95],"with":[96],"other":[97],"performance":[98],"metrics,":[99],"suggested":[101],"aggregate":[102],"measure":[103],"vehicle-hours":[106],"traveled":[107],"(VHT)":[108],"described":[110],"reasonable":[113],"range":[114],"detector":[116],"densities.":[117],"Extensions":[118],"to":[122],"account":[123],"both":[125],"recurrent":[126],"nonrecurrent":[128],"congestion":[129],"included.":[131],"Finally":[132],"some":[133],"suggestions":[134],"future":[136],"research":[137],"described.":[139]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":1},{"year":2017,"cited_by_count":3},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":3},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":5},{"year":2012,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}