Likarolo tsa tsamaiso ea li-trailer tse fanoang ke Trans-Power li hlahisoa le ho lekoa ho latela maemo a SAE: SAE J639: Sistimi ea ho emisa koloi ea terekere, hammoho le litlhoko tsa bareki.E le ho etsa bonnete ba hore matla a ho jara, polokeho, botsitso, bophelo bo lumellana le litlhoko tsa maemo a sebetsang a sehlahisoa, ho netefatsa boleng ba kakaretso le polokeho ea k'haravene.
