| Catch Point |
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FUNCTION Catch points may also be used in order to "catch" runaway wagons that may have Decoupled in an uphill segment of line which may collide with following trains. Runaways may go unnoticed, especially before the days of Track Circuits , leading to a severe crash involving at worst passenger train. It is also better to trap the runaways at low speed before they build up speed on a long falling grade, and, occasionally catchpoints are expanded into a Safety Siding . The catchpoints may consist of a full turnout with two switchblades (rails), or as little as a single switchblade. SEE ALSO EXTERNAL LINKS
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