{"@context":"https://neupai.io/schema/v0.2","@type":"StructuredNewsArticle","identity":{"article_id":"tech42_20260427_bus-arrival-time-accuracy","canonical_url":"https://www.tech42.co.kr/5%eb%b6%84-%ed%9b%84-%eb%8f%84%ec%b0%a9%ec%9d%b4%eb%9d%bc%eb%8d%98-%eb%b2%84%ec%8a%a4-%ec%a7%84%ec%a7%9c-5%eb%b6%84-%ed%9b%84-%ec%98%ac%ea%b9%8c/?utm_source=rss&utm_medium=rss&utm_campaign=5%25eb%25b6%2585-%25ed%259b%2584-%25eb%258f%2584%25ec%25b0%25a9%25ec%259d%25b4%25eb%259d%25bc%25eb%258d%2598-%25eb%25b2%2584%25ec%258a%25a4-%25ec%25a7%2584%25ec%25a7%259c-5%25eb%25b6%2584-%25ed%259b%2584-%25ec%2598%25ac%25eb%25b9%258c","ai_url":null,"publisher":{"name":"테크42","domain":"www.tech42.co.kr","type":"online"},"author":"김광우 기자","published_at":"2026-04-27T23:13:21.000Z","updated_at":null,"language":"en","article_type":"analysis","originality":"self_produced"},"content":{"headline":"Will the bus that said \"Arrives in 5 minutes\" really come in 5 minutes?","summary":"As high fuel prices have led to a surge in public transportation users, the accuracy of bus arrival times has become important. GPS systems are evolving from 15m errors to RTK GPS with 1cm errors, building precise transportation systems.","topics":["transportation","technology","gps","smart city","public transportation"],"geography":["KR"],"entities":[{"name":"LG Uplus","canonical_id":"corp:kr:lg-uplus","type":"company","role_in_article":"mentioned","metadata":{"ticker":null,"parent":null}},{"name":"CL Mobility","canonical_id":"corp:kr:cl-mobility","type":"company","role_in_article":"mentioned","metadata":{"ticker":null,"parent":null}},{"name":"Korea Transport Institute","canonical_id":"org:kr:korea-transport-institute","type":"organization","role_in_article":"mentioned","metadata":{"ticker":null,"parent":null}},{"name":"Seoul Metro","canonical_id":"org:kr:seoul-metro","type":"organization","role_in_article":"mentioned","metadata":{"ticker":null,"parent":null}},{"name":"Gongju City","canonical_id":"location:kr:gongju","type":"location","role_in_article":"mentioned","metadata":{"ticker":null,"parent":null}},{"name":"Naver Map","canonical_id":"product:kr:naver-map","type":"product","role_in_article":"mentioned","metadata":{"ticker":null,"parent":null}},{"name":"Kakao Map","canonical_id":"product:kr:kakao-map","type":"product","role_in_article":"mentioned","metadata":{"ticker":null,"parent":null}},{"name":"TRIPS","canonical_id":"product:kr:trips-system","type":"product","role_in_article":"primary_subject","metadata":{"ticker":null,"parent":null}}],"claims":[{"id":"c1","statement":"Metropolitan area public transportation passengers increased 4% compared to the previous year by mid-April this year","as_of":"2026-04","as_of_explicit":true,"as_of_raw":"April this year","source_type":"government_official","comparison":"previous_year_same_period","type":"fact","figures":null,"expiry_hint":null,"insight":null},{"id":"c2","statement":"Daily average passengers also increased from 160,000 to 170,000","as_of":"2026-04","as_of_explicit":false,"as_of_raw":"this year","source_type":"government_official","comparison":null,"type":"fact","figures":null,"expiry_hint":null,"insight":null},{"id":"c3","statement":"System error averages 1-3 minutes","as_of":"2026-04","as_of_explicit":false,"as_of_raw":"April 2026","source_type":"research_paper","comparison":null,"type":"fact","figures":null,"expiry_hint":null,"insight":null},{"id":"c4","statement":"When statistical correction techniques were applied to a local government's bus information system, the error rate decreased by 23%","as_of":"2026-04","as_of_explicit":false,"as_of_raw":"April 2026","source_type":"research_paper","comparison":"baseline_before_correction","type":"fact","figures":null,"expiry_hint":null,"insight":null},{"id":"c5","statement":"While general GPS has a location error of 15m, RTK GPS reduces error to within 1cm","as_of":"2026-04","as_of_explicit":false,"as_of_raw":"April 2026","source_type":"industry_estimate","comparison":"gps_vs_rtk_gps","type":"fact","figures":null,"expiry_hint":null,"insight":null},{"id":"c6","statement":"LG Uplus built RTK-based bus information systems on 67 city buses in Gongju City, Chungnam Province this year","as_of":"2026","as_of_explicit":true,"as_of_raw":"this year","source_type":"company_disclosure","comparison":null,"type":"fact","figures":null,"expiry_hint":null,"insight":null},{"id":"c7","statement":"Starting in Seoul in 2014 and currently adopted in Cheongju, Wonju, Ulsan, Daejeon, and other cities, this system is used as basic data for new route establishment, dispatch interval adjustment, and bus stop operation improvement","as_of":"2014","as_of_explicit":true,"as_of_raw":"2014","source_type":"government_official","comparison":null,"type":"fact","figures":null,"expiry_hint":null,"insight":null},{"id":"c8","statement":"By reflecting intersection signal cycles and traffic volume data in real time, it achieved results of reducing errors to within 1.5 minutes","as_of":"2026-04","as_of_explicit":false,"as_of_raw":"April 2026","source_type":"research_paper","comparison":null,"type":"fact","figures":null,"expiry_hint":null,"insight":null}],"ai_emotional_context":{"valence":0,"arousal":0,"primary_emotions":[],"secondary_emotions":[],"emotional_triggers":[]}},"provenance":{"source_chain":["primary_reporting"],"original_source_url":null,"related_articles":[]},"temporal":{"freshness":"recent","next_update_expected":null},"access":{"license":"neupai_standard","attribution_required":true,"structured_data":"free","full_text_available":false,"full_text_access":null}}