Okokuqala, ngenxa yezici zomkhiqizo we-guardrail esheshayo, iwumkhiqizo wokucubungula insimbi kwangaphambilini. Ngakho-ke, isici esikhulu esithinta intengo yakhe yinsimbi. Njengoba sonke sazi, intengo yensimbi eqoshiwe iyashintshashintsha kakhulu, ngokuyisisekelo iyashintsha nsuku zonke, kanye ne-guardrail ngoba isigaba samanje sokuthuthukiswa kwemakethe sifinyelele enkathini yenzuzo encane kodwa ukujika okusheshayo, okuholela ngqo ezinsikeni zokuvikela. Intengo yensimbi ayikwazanga ukuthwala ukuthengeka kwezinguquko zentengo yensimbi, futhi ingaguquguquka kuphela ngokushintshashintsha kwentengo yensimbi eqoshiwe.

Uma imakethe ikhuphuka, ilandelwa kancane kancane ukunyuka kwensimbi, futhi uma intengo yemakethe yehliswa, ukuze kugcinwe ukusebenza okuvamile kwefektri, kuzokwehlisa intengo ngenkuthalo. Yingakho intengo yemigqa yokuvikela ishintshashintsha njalo. Ngakho-ke, kuzoba namakhasimende amaningi anesikhathi eside sokwakha kanye nesidingo esikhulu ngokulinda nokubona futhi aqonde ukuthi azobeka inani elikhulu lama-oda lapho intengo yemigqa yokuvikela iphansi, akhokhe inani elithile lediphozithi kumkhiqizi wemigqa yokuvikela, asayine inkontileka, futhi avale intengo, ngakho-ke asikho isidingo sokukhathazeka ngokukhokha ngenxa yokunyuka kwamanani emakethe. Imali eningi ingonga imali eningi.