The invention discloses a rail used for a straddling type rail traffic system. The rail used for the straddling type rail traffic system comprises a steering part used for guiding a rail vehicle of the straddling type rail traffic system to steer, and a traveling part used for guiding the rail vehicle of the straddling type rail traffic system to advance, wherein the traveling part is connected tothe steering part, and a recessed part is formed in the traveling part to form an escape channel. The rail used for the straddling type rail traffic system has the beneficial effects that passengerscan be conveniently evacuated under an emergency, cost is low, the occupied space is small, the borne load of the rail is small, stability is high, the size of the escape channel is large, and overhaul and maintenance in the operation process are facilitated.