It has three signals- left, right, and SOS to remind drivers for keeping their distance.
Ọ nwere akara 4 ikanam: aka ekpe, aka nri, gaa n'ihu, kwụsị, gbanwee mgbaàmà na mgbaàmà mberede iji chetara onye ọkwọ ụgbọala ka ọ nọrọ ebe dị anya.