Question 2: Rail tracks (also railway
tracks, railroad tracks (US)) are the
surface structures that support and guide ________ or other rail-guided transportation
vehicles.
Question 4: Some stretches of track are ________, with three (or sometimes four)
parallel rails in place of the usual two, to allow trains of two
different gauges to share the same track.
Question 5: Flash butt welding is the preferred process which involves an
automated track-laying machine running a strong ________ through the touching ends of two unjoined pieces of
rail.
Question 6: Railway tracks are generally laid on a bed of stone ________ or track bed, in turn is
supported by prepared earthworks known as the track formation.
Question 7: The ________ is customarily crushed stone, and the purpose of this
is to support the ties and allow some adjustment of their position,
while allowing free drainage.