Lub suab ceeb toom ntawm lub tsheb fais fab

Nyiv Pooj tau tshaj tawm cov lus qhia rau cov khoom siv ceeb toom no thaum Lub Ib Hlis 2010 thiab Tebchaws Meskas tau pom zoo txoj cai lij choj thaum Lub Kaum Ob Hlis 2010. Lub Koom Haum Saib Xyuas Kev Nyab Xeeb Tsheb Loj Hauv Tebchaws Meskas tau tshaj tawm nws qhov kev txiav txim zaum kawg thaum Lub Ob Hlis 2018, thiab xav kom lub cuab yeej tso tawm suab ceeb toom thaum mus ncig ntawm qhov ceev tsawg dua 18.6 mph (30 km / h) nrog kev ua raws li lub Cuaj Hli 2020, tab sis 50% ntawm cov tsheb "ntsiag to" yuav tsum muaj lub suab ceeb toom thaum Lub Cuaj Hli 2019. Thaum Lub Plaub Hlis 2014, European Parliament tau pom zoo txoj cai lij choj uas yuav tsum tau siv lub Acoustic Vehicle Alerting System (AVAS). Cov chaw tsim khoom yuav tsum teeb tsa lub kaw lus AVAS hauv cov tsheb fais fab plaub lub log thiab hybrid fais fab uas tau pom zoo txij Lub Xya Hli 1, 2019, thiab rau txhua lub tsheb fais fab thiab hybrid tshiab uas ntsiag to uas tau sau npe txij Lub Xya Hli 2021. Lub tsheb yuav tsum ua suab nrov tas mus li tsawg kawg yog 56 dBA (hauv 2 meters) yog tias lub tsheb mus 20 km / h (12 mph) lossis qeeb dua, thiab siab tshaj plaws ntawm 75 dBA.

Muaj ntau lub tuam txhab tsim tsheb tau tsim cov khoom siv hluav taws xob ceeb toom, thiab txij li lub Kaum Ob Hlis 2011 cov tsheb thev naus laus zis siab heev uas muaj nyob hauv khw nrog lub suab ceeb toom hluav taws xob ua haujlwm tes suav nrog Nissan Leaf, Chevrolet Volt, Honda FCX Clarity, Nissan Fuga Hybrid/Infiniti M35, Hyundai Sonata Hybrid, thiab Toyota Prius (Nyiv Pooj xwb). Cov qauv uas muaj cov tshuab ua haujlwm tsis siv neeg suav nrog 2014 BMW i3 (kev xaiv tsis muaj nyob hauv Tebchaws Meskas), 2012 qauv xyoo Toyota Camry Hybrid, 2012 Lexus CT200h, txhua lub EV versions ntawm Honda Fit, thiab txhua lub tsheb Prius tsev neeg uas nyuam qhuav qhia hauv Tebchaws Meskas, suav nrog tus qauv xyoo 2012 qauv Prius, Toyota Prius v, Prius c thiab Toyota Prius Plug-in Hybrid. Lub tsheb fais fab Smart 2013, xaiv tau, los nrog lub suab ua haujlwm tsis siv neeg hauv Tebchaws Meskas thiab Nyiv Pooj thiab ua haujlwm tes hauv Tebchaws Europe.

Enhanced Vehicle Acoustics (EVA), ib lub tuam txhab nyob hauv Silicon Valley, California thiab tau tsim los ntawm ob tug tub ntxhais kawm Stanford nrog kev pab los ntawm cov nyiaj pib los ntawm National Federation of the Blind, tau tsim ib qho thev naus laus zis tom qab kev lag luam hu ua "Vehicular Operations Sound Emitting Systems" (VOSES). Lub cuab yeej ua rau cov tsheb fais fab hybrid suab zoo li cov tsheb siv hluav taws xob sab hauv thaum lub tsheb mus rau hauv hom hluav taws xob ntsiag to (EV hom), tab sis ntawm ib feem ntawm qib suab ntawm feem ntau cov tsheb. Thaum muaj kev ceev siab dua ntawm 20 mais ib teev (32 km / h) txog 25 mais ib teev (40 km / h) lub suab kaw. Lub kaw lus kuj kaw thaum lub cav sib xyaw ua haujlwm.

VOSES siv cov lus hais me me, txhua lub caij nyoog uas muab tso rau ntawm lub log hybrid thiab tso tawm cov suab tshwj xeeb raws li qhov kev taw qhia uas lub tsheb tab tom txav mus kom txo qis kev ua qias tuaj ntawm suab nrov thiab kom muaj cov ntaub ntawv suab zoo tshaj plaws rau cov neeg taug kev. Yog tias lub tsheb tab tom txav mus tom ntej, cov suab tsuas yog tso tawm rau hauv qhov kev taw qhia pem hauv ntej; thiab yog tias lub tsheb tig sab laug lossis sab xis, lub suab hloov pauv ntawm sab laug lossis sab xis kom haum. Lub tuam txhab sib cav tias "lub suab nrov nrov, lub suab nrov thiab lub tswb ceeb toom yog qhov cuam tshuam ntau dua li qhov muaj txiaj ntsig", thiab tias cov suab zoo tshaj plaws rau kev ceeb toom cov neeg taug kev yog zoo li lub tsheb, xws li "lub suab nrov ntawm lub cav lossis lub log tsheb qeeb qeeb hla txoj kev." Ib qho ntawm EVA lub suab sab nraud tau tsim tshwj xeeb rau Toyota Prius.