A tie plate is a thick steel panel that sits between the rails and ties, or sleepers, on a standard railroad track. Railroad tie plates are generally tapered at either end to improve stability and reduce torsion and twisting along the rails. Rails installed with tie plates are better able to maintain their position, which helps to standardize the width, or gauge, of the track along its length. Engineers and builders use rail tie plates to extend the longevity of a new track installation, and to maximize safety for passengers and railway workers.