Amarobhothi akulona nje ulimi oluyisisekelo lwethrafikhi yomgwaqo, kodwa futhi ayingxenye ebalulekile yomyalo wesignali yethrafikhi. Isetshenziswa kakhulu ezigabeni zomgwaqo eziyingozi njengezimpambano zomgwaqo, amakhona, amabhuloho, njll., ingaqondisa ithrafikhi yabashayeli noma abahamba ngezinyawo, ikhuthaze ithrafikhi, futhi igweme ...
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