In railway signalling, an interlocking is an arrangement of signal apparatus that prevents conflicting movements through an arrangement of tracks such as junctions or crossings. The signalling appliances and tracks are sometimes collectively referred to as an interlocking plant. An interlocking is designed so that it is impossible to display a signal to proceed unless the route to be used is proven safe.
MI companero de cuarto llegara tarde a clase. Mi mejor amigo salio con una chica guapa. Mis padres vieron una pelicula. Not sure what was I suppose to do.
