Ukukhanya okuphezulu kwe-ring ring brake light, ukuhlinzeka ngezixwayiso eziphephile nezithembekile zokugibela;Idizayini evalwe ngokuphelele engangeni manzi, ivikeleke kakhulu futhi inokwethenjelwa;Setha ukukhanya kwendawo, ukukhanya kwebhuleki bese uvula isignali kokukodwa.