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, kukana kutentha kwa dzuwa, kuwala kowala komanso kugwiritsa ntchito nthawi yayitali, kugwiritsidwa ntchito mumsewu waukulu, njanji. , mlatho kumbali zonse za chitetezo