Nevashandi vanopfuura zana nemakumi mashanu, Armstrong ane timu yehunyanzvi uye mainjiniya ane ruzivo rwe auto brake system.Isu tinotarisa pane zvigadzirwa zve auto brake makore anopfuura makumi maviri nematatu, uye tinogara tine chido chebasa iri.Isu tinoshanda nemukurumbira wedu uye tinotenda kuti kubudirira kuchawanikwa kana tikaramba tiri mumhando yedu.
Isu takatarisana neiyo friction material indasitiri kwemakore anopfuura makumi maviri, tine nzwisiso yakadzama yeback plate uye friction materials, uye takagadzirawo hurongwa hwekukwira nekudzika.