Clothoid is often prefered for highways and railway route design (Meek, Walton 2004a; 2004b). It is also recorded that, these clothoid curves provides a coherent course of curvature. This parabola provides a smaller shift-P with a longer transition and a larger spiral extension (K), besides having the advantage of vis-a-vis the clothoid .
cloy (kloi) v. cloyed, cloy·ing, cloys v.tr. To cause distaste or disgust by supplying with too much of something originally pleasant, especially something rich or sweet; surfeit. v.intr. To be too filling, rich, or sweet. [Short for obsolete accloy, to clog, from Middle English acloien, from Old French encloer, to drive a nail into, from Medieval ...