A method, a system, and a computer program product are provided for updating one or more attributes of a learned road sign (LRS). The system, for example, comprising at least one non-transitory memory configured to store computer program code instructions; and at least one processor is configured to execute the computer program code instructions to obtain sensor data associated with the LRS and determine a plurality of first downstream links associated with the LRS, based on the sensor data. Further, the at least one processor is configured to select a candidate downstream link from the plurality of first downstream links based on a heading difference between the LRS and each of the plurality of first downstream link and to update the one or more attributes of the LRS, based on the candidate downstream link.