1. A system for autonomously navigating a vehicle along a road segment, the system comprising: at least one processor programmed to: receive from a camera at least one image representative of an environment of the vehicle; analyze the at least one image to identify at least one recognized landmark, wherein the at least one recognized landmark is part of a group of recognized landmarks, and identification of the at least one recognized landmark is based, at least in part, upon one or more landmark group characteristics associated with the group of recognized landmarks; update a current location of the vehicle relative to a predetermined road model trajectory associated with the road segment based, at least in part, on a predetermined location of the recognized landmark; and determine an autonomous steering action for the vehicle based on a direction of the predetermined road model trajectory at the determined current location of the vehicle relative to the predetermined road model trajectory.