Movable barrier that can be opened or closed to <i>railway </i>traffic. <br/>For instance a water barrier in a tunnel or dike. <br/><br/>For barriers that block <i>road traffic</i>, refer to Level Crossings. <br/>Gated level crossings have a dual function, blocking either road or rail traffic. These are detected much like level crossing and therefore considered Level Crossings in our model.<br/>