Mashizha akasimba e8mm akajeka epolycarbonate anoshandiswa kugadzira nzira yakavharwa pachikoro ichi chekireshi anogadzira nzira inopenya, yakachengeteka, uye inochengetedzwa mamiriro ekunze. Kujeka kwezvakagadzirwa kunowedzera mwenje wechisikigo, zvichisimudzira nzvimbo inofadza yevadzidzi vadiki. Kupokana kwayo kunopa kusimba kunodiwa kune yakakwira-traffic nzvimbo, kuve nechokwadi chekugara kwenguva refu uye kugadzirisa-isina mhinduro.