High speed spiral gonhi, senge nyowani-mhando yesimbi indasitiri gonhi, inosanganisa maficha ekushanda kwepamusoro, insulation, kuchengetedza simba, chengetedzo, kuramba mhepo uye kuchengetedza kwezvakatipoteredza.Iyo yekuvhura yekumhanyisa inosvika 1.8m / s, ichiita kuti chigadzirwa chishande kune yemukati uye yekunze zviteshi zvezvinhu zvinoda kazhinji kumhanyisa traffic.