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.
Read more about this topic: Catch Points
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.
“I know those little phrases that seem so innocuous and, once you let them in, pollute the whole of speech. Nothing is more real than nothing. They rise up out of the pit and know no rest until they drag you down into its dark.”
—Samuel Beckett (1906–1989)