In some cases, catch points and trap points direct vehicles into a sand drag or safety siding, also sometimes called an arrestor bed. This may be a siding simply leading to a mound of sand, gravel or other granular material, or a siding where the rails are within sand-filled troughs. This method of stopping a vehicle travelling at speed is preferred over a buffer stop as there is less shock to the vehicle involved.
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Famous quotes containing the words sand and/or drag:
“O that my vexation were weighed, and all my calamity laid in the balances! For then it would be heavier than the sand of the sea; therefore my words have been rash. For the arrows of the Almighty are in me; my spirit drinks their poison; the terrors of God are arrayed against me.”
—Bible: Hebrew, Job 6:2-5.
“The moon, also, is merciless: she would drag me
Cruelly, being barren.
Her radiance scathes me. Or perhaps I have caught her.”
—Sylvia Plath (1932–1963)