reverse curve
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English
Noun
reverse curve (plural reverse curves)
- A curve to the left or right which immediately curves in the opposite direction, and which is basically S-shaped.
- 1945 July and August, “Notes and News: "A Nice Day's Work"”, in Railway Magazine, page 235:
- One driver told him that a fireman who did not know the route might easily go "over the side" between Corby and Harringworth, unless warned beforehand of the reverse curves; he himself, in his firing days, used to try so to plan his firing that it was unnecessary to add any more coal while passing over this stretch at speed.
- 1947 September and October, “The Why and The Wherefore: Definition of a Reverse Curve”, in Railway Magazine, page 334:
- Chambers's Technical Dictionary defines a reverse curve as "a curve composed of two arcs, of the same or different radii, with their centres on opposite sides of the curve." In other words, a reverse curve is an "S" curve.
- 1959 November, G. H. Robin, “Railways to Helensburgh—a pre-electrification retrospect”, in Trains Illustrated, page 544:
- Some slight alterations in alignment were necessary to provide the pier line and the station is approached by severe reverse curves in both directions.
Related terms
References
- “reverse curve”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.