Abstract: The vehicles used in large-scale open pit mines have small speeds and large models. The roads in large-scale open pit mines are one-way and two-lane and the road width is large. The traditional highway traffic signs are difficult to meet the driver's demand for road information. In this paper, the driver's visual recognition process of the roadside sign is analyzed theoretically. It is determined that the static blind zone is the main factor limiting the setting of the open-pit mine sign. A method for setting the single roadside sign based on the static blind zone is proposed. The calculation example proves that the calculation model is practical and feasible.