Set Back Distance in Highway Geometric Design Formulas

Set back distance is the distance required from the centerline of a horizontal curve to an obstruction on the inner side of the curve to provide adequate sight distance at a horizontal curve. And is denoted by m. Set Back Distance is usually measured using the Meter for Length. Note that the value of Set Back Distance is always positive.

Formulas to find Set Back Distance in Highway Geometric Design

fxSet Back Distance by Approx Method (L is greater than S)Go

fxSet Back Distance by Approx Method (L is less than S)Go

fxSet Back Distance by Rational Method (L is greater than S) Single LaneGo

List of variables in Highway Geometric Design formulas

fx Stopping Sight Distance Go

fx Radius of Curve Go

fx Length of Curve Go

FAQ

What is the Set Back Distance?

Set back distance is the distance required from the centerline of a horizontal curve to an obstruction on the inner side of the curve to provide adequate sight distance at a horizontal curve. Set Back Distance is usually measured using the Meter for Length. Note that the value of Set Back Distance is always positive.

Can the Set Back Distance be negative?

No, the Set Back Distance, measured in Length cannot be negative.

What unit is used to measure Set Back Distance?

Set Back Distance is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Set Back Distance can be measured.

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