Hauv chaw ua haujlwm, nws yog ib qho tseem ceeb los xyuas kom meej tias muaj kev nyab xeeb ntawm cov neeg ua haujlwm, tshwj xeeb tshaj yog cov khau tsim nyog. Kev nyab xeeb khau tsis tsuas yog muab kev tiv thaiv tsim nyog, tab sis kuj txo cov kev raug mob los ntawm kev hlais, kev mus ncig, thiab kev ntog. Raws li National Safety Council, hauv Tebchaws Meskas ib leeg, muaj ntau dua 53,000 raug mob ko taw thiab txog li 44.5 lab raug mob los ntawm kev hlais, mus ncig thiab ntog txhua xyoo. Cov duab no ua rau peb nco txog qhov tseem ceeb ntawm kev muab cov neeg ua haujlwm nrog cov khau ruaj ntseg zoo.
Thaum xaiv cov khau kev nyab xeeb, ntau yam yuav tsum tau xav txog, xws li qhov chaw ua haujlwm, cov khoom siv, thiab cov kev cai ntawm kev ua raws li cov qauv kev nyab xeeb. Hauv Tebchaws Europe, EN ISO 20345: 2011 tus qauv yog cov lus qhia yooj yim rau khau kev nyab xeeb thiab faib cov khau kev nyab xeeb raws li qib kev tiv thaiv uas xav tau. Txhua pawg no muab cov yam ntxwv kev ruaj ntseg sib txawv:
- SB (Safety Foundation): Cov khau no tau nruab nrog cov ntiv taw tiv thaiv ua los ntawm cov hlau, cov khoom sib xyaw lossis txhuas los tiv thaiv cov khoom poob thiab tuaj yeem tiv taus qhov cuam tshuam tsawg kawg 200 joules. Qhov cuam tshuam nqus ntawm pob taws kuj tseem tsawg kawg 200 joules.
- S1 Chav Kawm: Cov khau no tiv thaiv zoo li qub thiab muab lub zog nqus hauv pob taws.
- Chav S2: Ntxiv rau cov yam ntxwv ntawm Chav Kawm S1, cov khau no muaj kev tiv thaiv dej ntau dua.
- Chav S3: Cov yam ntxwv ntawm Chav S2 nrog kev txhawb nqa midsole thiab cov khau tsis khaus.
- Chav Kawm S1P: Zoo ib yam li Chav Kawm S1, cov khau no muaj cov hlau lossis cov hlau tsis muaj hlau uas tiv thaiv cov ntsia hlau lossis lwm yam khoom ntse los ntawm kev nkag mus.
- Qeb S4: Cov khau no muaj cov yam ntxwv zoo sib xws rau qeb S3, tab sis txhua yam yog ua los ntawm cov yas, ua rau lawv tsis muaj dej.
- Chav S5: Zoo ib yam li Chav Kawm S4, cov khau no tau nruab nrog ib qho nyuaj midsole thiab cov khau tsis khaus.
Kev nkag siab txog cov qauv khau kev nyab xeeb no pab cov lag luam txiav txim siab thaum xaiv khau kev nyab xeeb uas haum rau lawv qhov chaw ua haujlwm thiab kev tiv thaiv kev xav tau. Raws li cov kev xav tau tshwj xeeb thiab cov xwm txheej tshwj xeeb ntawm qhov chaw ua haujlwm, xaiv hom khau kev nyab xeeb kom muaj kev nyab xeeb thiab xis nyob rau cov neeg ua haujlwm.
