one of a pair of parallel bars laid on a prepared track, roadway, etc, that serve as a guide and running surface for the wheels of a railway train, tramcar, etc
... raudtee on maatükiga püsivalt ühendatud rajatis, mille olulised osad on muldkeha ja sellele toetuv tee pealisehitus, mis koosneb rööbastest, pöörmetest, liipritest ja ballastist; ...
... Superstructure, in particular: rails, grooved rails and check rails; sleepers and longitudinal ties, small fittings for the permanent way, ballast including stone chippings and sand; points, crossings, etc.; ...