Determination method for continuously setting speed limit signs at roadside of general road

The invention discloses a determination method for continuously setting speed limit signs at roadsides of general roads, which consists of determining repeated setting times and repeated setting optimum spacing of the speed limit signs at roadsides. The continuously setting of the speed limit signs at the roadsides refers to the traffic environment of general roads, is determined according to thetraffic characteristic parameters such as the visual and cognitive characteristic parameter of a driver, the road characteristic parameter, the ratio of heavy cars and the like, and particularly has the following steps: acquiring relative parameters of general roads and traffic conditions, and obtaining the visual and cognitive characteristic parameter of the driver; calculating the probability of dodging the visual and cognitive speed limit signs sight of drivers in small cars in fast lanes by heavy cars in kerb lanes; determining the times of the repeated setting of the speed limit signs atthe roadsides; and calculating the minimum and the maximum spacing of the repeated setting of the speed limit signs at the roadsides and determining the optimum spacing of the repeated setting. The invention can realize the purpose of improving the effectiveness of the speed limit sign setting at the roadsides of the general roads and speed managing efficiency. The invention is simple and particle, and has strong operability and effectiveness.