SIDE IMPACT PROTECTION

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1、SIDEIMPACTPROTECTIONDecadesofInactionandThousandsofUnnecessaryDeaths;StillNoStandardforSideImpactAirbagsandOtherMajorSafetyImprovementsAbout10,000peopledieeachyearinbothsingle-andmultiple-vehiclecollisionsinvolvingsideimpacts,eventhoughmanyofthesedeathscouldbepreventedbyimprovedsideimpa

2、ctsafetystandards.Sideimpactcrasheshaveincreasedinbothseverityandthenumberofdeathsoverthepastdecadedueprimarilytotheexplosivegrowthinthenumberofaggressivelydesignedsportutilityvehiclesinthenation’sfleet.PurchasesofSUVs,pickuptrucks,andlargevansnowcompriseone-halfofannualsalesofnewpassen

3、gervehicles.Notonlyhasthefederalgovernmentdraggeditsfeettopreventterriblydestructivetruckdesigns,buttheNationalHighwayTrafficSafetyAdministration(NHTSA)hasmadelittleprogresstowardimprovingsideimpactoccupantprotection,despiteproventechnologiessuchassideairbags.___________________________

4、_________________________________LowerInteriorSideImpactProtection(FMVSSNo.214):Jan.1,1973NHTSA’squasistaticsideimpacttesttakeseffectforpassengercars.Thetestreliesonpressingacylinderagainstpassengervehicledoorsandresultsinmoderateimprovementsinvehiclesresistingintrusion,particularlyfrom

5、poles.Dec.6,1979NHTSAissuesanadvancednoticeofproposedrulemaking(ANPRM)onupgradingthesideimpactstandardandbroadeningitsscopetoincludeallpassengercarryingvehicles.1980sNHTSAbeginstestingpassengervehiclesideimpactstrengthandoccupantprotectionwhenvehiclesstrikepolesinsideimpactcrashes.Jan.1

6、988NHTSAproposesaddingamoredemandingdynamictestprocedurethatusesamovingbarriersimulatinganothercartotestcarsideimpactsafetyperformance.Aug.1988NHTSAproposesupdatinglowerinteriorsideimpactprotection,includingtheuseofdynamictestsandtheneedtoaddresstheproblemsofdeepintrusionfromnarrow,fixe

7、droadsideobjects,suchastelephonepoles.Dec.1989NHTSAproposestoextendthecylindertestrequirementsintroducedin1971-1980tolighttrucks,buses,andmultipurposepassengervehicles(MPVs).Oct.30,1990NHTSAadoptsadynamicsideimpactprotectionrequirement,butonlyappliesittopassengercars.Italsoesta