The term 'highway feature' encompasses a variety of components that are found on highways. These features include a MEDIAN, which is a physical barrier that separates opposing lanes of traffic; a cloverleaf, which is an interchange that allows vehicles to enter and exit highways without having to cross over the opposing lanes of traffic; a LANE, which is a portion of the highway designated for a specific type of vehicle; a RAMP, which is a sloped section of the highway that allows vehicles to transition from one level to another; and an UNDERPASS, which is a tunnel or bridge that allows vehicles to pass beneath a roadway.