tie - one of the transverse supports to which railroad rails are fastened to keep them to line, gage, and grade and to cushion, distribute, and transmit the stresses of traffic through the ballast to the roadbed
... raudtee on maatükiga püsivalt ühendatud rajatis, mille olulised osad on muldkeha ja sellele toetuv tee pealisehitus, mis koosneb rööbastest, pöörmetest, liipritest ja ballastist; ...