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The elliptical turbo roundabouts are a safer and more effective alternative to the known multi-lane roundabouts. This paper contains the results of numerical analysis for the problem of approximation of the offset curves off(el(a, b); s) of an ellipse el(a, b) at distance s by ellipses el1(a+s, b+s) and el2(a-s, b-s). We considered the ellipses which can be used to shape the turbo roundabouts. It...
This article describes the results of numerical analysis of the following problem: the approximation of the offset curve off(c(t); s) of the Archimedean spiral c(t) at distance s by the other Archimedean spiral c1(t). We focus on the spirals which can be used to shape the turbo roundabouts. The paper contains mathematical facts which are helpful in designing the turbo roundabouts formed by means of...
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