{"id":"https://openalex.org/W2245255397","doi":null,"title":"Performance of traffic signs in Australia","display_name":"Performance of traffic signs in Australia","publication_year":1989,"publication_date":"1989-07-01","ids":{"openalex":"https://openalex.org/W2245255397","mag":"2245255397"},"language":"en","primary_location":{"id":"mag:2245255397","doi":null,"is_oa":false,"landing_page_url":"https://trid.trb.org/view/1198144","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null},"volume":null,"type":"article","indexed_in":[],"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/A5062163835","display_name":"F R Gennaoui","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"F R Gennaoui","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5032378500","display_name":"S E Jenkins","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"S E Jenkins","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.32733547,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"16","issue":"3","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T14056","display_name":"Safety Warnings and Signage","score":0.9955999851226807,"subfield":{"id":"https://openalex.org/subfields/3207","display_name":"Social Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T14056","display_name":"Safety Warnings and Signage","score":0.9955999851226807,"subfield":{"id":"https://openalex.org/subfields/3207","display_name":"Social Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T13527","display_name":"Transportation Systems and Logistics","score":0.0020000000949949026,"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/T10370","display_name":"Traffic and Road Safety","score":0.0012000000569969416,"subfield":{"id":"https://openalex.org/subfields/2213","display_name":"Safety, Risk, Reliability and Quality"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/traffic-signs","display_name":"traffic signs","score":0.8600000143051147},{"id":"https://openalex.org/keywords/nighttime-visibility","display_name":"nighttime visibility","score":0.7450000047683716},{"id":"https://openalex.org/keywords/photometric-performance","display_name":"photometric performance","score":0.9369999766349792},{"id":"https://openalex.org/keywords/terminal-values","display_name":"terminal values","score":0.6420000195503235},{"id":"https://openalex.org/keywords/contrast-ratio","display_name":"contrast ratio","score":0.7609999775886536},{"id":"https://openalex.org/keywords/field-survey-methods","display_name":"field survey methods","score":0.6200000047683716}],"concepts":[{"id":"https://openalex.org/C2983860417","wikidata":"https://www.wikidata.org/wiki/Q170285","display_name":"Traffic sign","level":3,"score":0.5610896348953247},{"id":"https://openalex.org/C139676723","wikidata":"https://www.wikidata.org/wiki/Q1193832","display_name":"Sign (mathematics)","level":2,"score":0.5270657539367676},{"id":"https://openalex.org/C2776291640","wikidata":"https://www.wikidata.org/wiki/Q2912517","display_name":"Value (mathematics)","level":2,"score":0.42850732803344727},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.33681273460388184},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2370772659778595},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:2245255397","doi":null,"is_oa":false,"landing_page_url":"https://trid.trb.org/view/1198144","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2293435502","https://openalex.org/W1514132087","https://openalex.org/W2243980479","https://openalex.org/W577099401","https://openalex.org/W641813898","https://openalex.org/W627880131","https://openalex.org/W1573199071","https://openalex.org/W636411905","https://openalex.org/W1992508437","https://openalex.org/W7120828081"],"abstract_inverted_index":{"The":[0,57,70,126,140],"paper":[1],"presents":[2],"the":[3,16,27,38,41,48,91,109,119,123,131,135,163,166,169],"factors":[4],"affecting":[5],"sign":[6],"performance":[7,72,93,114],"at":[8,115],"night.":[9],"It":[10],"also":[11],"includes":[12],"a":[13,23,30,155],"report":[14],"on":[15,22],"terminal":[36,49,146,184],"values":[50,147],"of":[19,29,40,51,73,82,94,122,128,134,162,165,177],"signs":[20,53,110,129,178],"based":[21],"literature":[24],"review,":[25],"and":[26,90],"findings":[28],"pilot":[31],"survey":[32,142],"with":[33,47,154],"respect":[34],"to":[35,78,99,137,151,158,175],"values,":[37],"methodology":[39],"field":[42],"surveys":[43],"is":[44],"described":[45],"together":[46],"traffic":[52],"in":[54,112,144,168],"different":[55],"environments.":[56],"major":[58],"conclusions":[59],"from":[60,149],"this":[61],"preliminary":[62],"analysis":[63],"can":[64],"be":[65,176],"summarized":[66],"as":[67],"follows:":[68],"(1)":[69],"photometric":[71,92],"Class":[74,95],"1":[75],"sheeting":[76,97],"drops":[77,98],"72":[79],"per":[80,101],"cent":[81,102],"its":[83],"original":[84],"value":[85],"after":[86,103],"about":[87,104],"13":[88],"years,":[89],"2":[96,150],"50":[100],"9":[105],"years.":[106],"(2)":[107],"Cleaning":[108],"results":[111],"better":[113],"any":[116],"point":[117],"along":[118],"life":[120],"curve":[121],"sign.":[124],"(3)":[125],"degradation":[127],"changes":[130],"contrast":[132],"ratio":[133],"legend":[136],"background.":[138],"(4)":[139],"nighttime":[141],"resulted":[143],"mean":[145],"ranging":[148],"21":[152],"CIL/m**2":[153],"range":[156],"up":[157],"55":[159],"CIL/m**2.":[160],"Because":[161],"difficulty":[164],"task":[167],"field,":[170],"these":[171],"estimates":[172],"are":[173,180],"likely":[174],"which":[179],"well":[181],"beyond":[182],"their":[183],"value.":[185]},"counts_by_year":[],"updated_date":"2025-11-06T04:12:42.849631","created_date":"2016-06-24T00:00:00"}
