Ua ntej ntawm tag nrho cov, vim cov khoom yam ntxwv ntawm high-ceev guardrail, nws yog ib yam khoom ntawm ua ntej ua cov hlau.Yog li ntawd, qhov tseem ceeb cuam tshuam rau nws tus nqi yog hlau.Raws li peb txhua tus paub, tus nqi ntawm cov sawb hlau tsis hloov pauv, feem ntau hloov pauv txhua hnub, thiab cov guardrail vim tias tam sim no theem ntawm kev lag luam kev loj hlob tau mus txog lub sijhawm me me tab sis kev hloov pauv sai, uas ncaj qha ua rau guardrails.Tus nqi ntawm cov hlau tsis muaj peev xwm dais tus nqi ntawm cov nqi hloov pauv steel, thiab tsuas tuaj yeem hloov pauv nrog tus nqi hloov pauv ntawm cov sawb hlau.

Thaum lub lag luam nce, nws yog passively ua raws li los ntawm kev nce ntawm cov hlau, thiab thaum lub lag luam tus nqi qis, thiaj li yuav tswj tau lub lag luam ntawm lub Hoobkas, nws yuav nquag txo tus nqi.Qhov no yog vim li cas tus nqi ntawm guardrails fluctuates ntau zaus.Yog li ntawd, yuav muaj ntau tus neeg siv khoom uas muaj lub sijhawm tsim kho ntev thiab kev thov loj los ntawm kev tos-thiab-saib thiab nkag siab tias lawv yuav tso ntau qhov kev txiav txim thaum tus nqi ntawm tus neeg saib xyuas qis, them qee qhov nyiaj tso rau. cov chaw tsim khoom guardrail, kos npe rau daim ntawv cog lus, thiab kaw tus nqi, yog li tsis tas yuav txhawj xeeb txog kev them nyiaj vim kev lag luam nce nqi.Cov nyiaj ntau tuaj yeem txuag tau nyiaj ntau.