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Reply to "Measurement technical question from another sport"

The difference between the 314.2 and the 295 comes about because the measured line is offset 30 cm from the curb. Thus the circular course (measured at the center of a 10 m wide roadway) will have a diameter (5-.3)x2=9.4 or a circumference 9.4xpi=29.5 meters. Or, for 10 laps, 295 meters. No conflict here.

Tom Knight first proposed using the idea of "degrees of curvature" when describing a course. Add up all the right and left turns in a course, and the result is the degrees of curvature, a good index of twistiness.
Last edited by peteriegel
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