A computer-implemented method of detecting distracted driving comprises: determining, by one or more processors, a primary preview region (PPR) in a representation of an environment； determining, by the one or more processors, a gaze point for a driver based on a sequence of images of the driver； determining, by the one or more processors, that the gaze point is outside of the PPR； based on the determined gaze point being outside of the PPR, decreasing, by the one or more processors, an attention level for the PPR； based on the attention level for the PPR, generating, by the one or more processors, an alert.
