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Manycountrieshavepassedsafetylawsthatrequireseatbeltsinvehicles.Amodernthree-pointseatbeltalsocalledasafetybeltisaharnesstopreventthedriverorapassengerfromflyingforwardandhittinghardagainstth
更新时间:2024-04-25 11:33:01
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Manycountrieshavepassedsafetylawsthatrequireseatbeltsinvehicles.Amodernthree-pointseatbeltalsocalledasafetybeltisaharnesstopreventthedriverorapassengerfromflyingforwardandhittinghardagainsttheinteriorofavehicleduringacollision.Amodernseatbeltwillhelptopositionyouproperlytogainmaximumbenefitfromyourcar’sairbagsthatwillinflate(使充气)duringacollision.Usingaseatbeltalsopreventsyoufrombeingejected(弹出)fromacarintothepathofoncomingtraffic.Researchshowsthatwhenyouwearamodernseatbeltyoureducetheriskofdeathorseriousinjuryby70%ormoreduringanautoaccident.

Seatbeltshaveexistedindifferentformssincetheearlydaysofautomobilesandtheyhavechangedfromasinglelapbelttothethree-pointseatbeltweusetoday.In1911thefirstairplaneseatbeltwasinstalled.Theninthe1920’stheywereusedinracecars.Bythe1930sagroupofAmericanphysicianscreatedlapbeltsfortheirownvehiclesandurgedvehiclemanufacturerstoprovideseatbeltsonallvehicles.

Dr.C.HunterSheldenmadeamajorcontributiontooursafetywithhisarticleintheNovember51955JournaloftheAmericanMedicalAssociation(JAMA).Hestronglyencouragedthemanufactureanduseofdoorlocksairbagsandretractable(伸缩式的)seatbeltsliketheonesweusetoday.Themodernthree-pointseatbeltincludingalapbeltandashoulderbeltwasintroducedasstandardequipmentonVolvocarsin1959.

In1970thestateofVictoriainAustraliamadethewearingofaseatbeltcompulsoryforeverycardriverandfront-seatpassenger.Todaymanycountrieshavealsomandated(授权)theuseoffive-pointsafetyharnessesforcarefullydesignedchildsafetyseatsthatcanprotectachildduringaseriouscaraccident.

AnairbagisaSupplementalRestraintSystemorSRSandconsistsofarapidlyinflatablerestraintcushionthatworkstogetherwithaseatbelttoprotectyouduringacollision.Moderncarsoftencontainseveralairbagsinvariouslocations.Sinceairbagscanonlyinflateonceandwillquicklydeflateaftertheinitialimpacttheywillnotprovideanyprotectionforyouduringasecondarycollision.

Theinflationofairbagcanprotectorhurtyou.Theriskzoneforadriver’sairbagisthefirst8centimetersfromitspr

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