Mzere wa njanji
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Guard njanji ndi mzati Highway mpanda board
Mzere wa mbale wa Guardrail ndi mtundu wamtundu wokhala ndi mphamvu zambiri, chitsulo chabwino, mawonekedwe okongola, masomphenya otakata, kukhazikitsa kosavuta ndi kukana dzimbiri, kutentha kwa dzuwa kukana, mtundu wowala komanso nthawi yogwiritsa ntchito kwa nthawi yayitali, kuti igwiritsidwe ntchito mumsewu waukulu, njanji. , mlatho kumbali zonse za chitetezo