Bayonet snapshot unit with signal guidance function

The utility model relates to the technical field of traffic snapshot units, in particular to a bayonet snapshot unit with a signal guidance function. The lane signal auxiliary guiding device is arranged under a snapshot unit, the snapshot unit corresponds to a longitudinal lane marking line up and down, two sets of laser gradienters are fixedly arranged in a positioning cover, the laser gradienters are vertically and downwards arranged, light rays of the two sets of laser gradienters are red and green respectively, and the two sets of laser gradienters are arranged in the positioning cover. The laser straight line irradiated by the laser level meter is located on the lane longitudinal marking line, the laser level meter is switched on the ground according to the color of the signal lamp to irradiate the straight line with the corresponding color, and the laser irradiation straight line coincides with the lane longitudinal marking line, so that the lane auxiliary positioning effect can be achieved; and the rea