Radius of Curve in Parabolic and Transition Curves Formulas

The Radius of Curve is defined as the horizontal curve with a specific radius which quantifies smoothness and ease of vehicle movement through a curve. And is denoted by R_t. Radius of Curve is usually measured using the Meter for Length. Note that the value of Radius of Curve is always positive.

Formulas to find Radius of Curve in Parabolic and Transition Curves

fxRadius of Circular Curve Minimum LengthGo

Parabolic and Transition Curves formulas that make use of Radius of Curve

fxMinimum Length of SpiralGo

fxVehicle Velocity given Minimum Length of SpiralGo

fxRate of Increase of Radial AccelerationGo

List of variables in Parabolic and Transition Curves formulas

fx Vehicle Velocity Go

fx Minimum Length of Spiral Go

fx Rate of Increase of Radial Acceleration Go

FAQ

What is the Radius of Curve?

The Radius of Curve is defined as the horizontal curve with a specific radius which quantifies smoothness and ease of vehicle movement through a curve. Radius of Curve is usually measured using the Meter for Length. Note that the value of Radius of Curve is always positive.

Can the Radius of Curve be negative?

No, the Radius of Curve, measured in Length cannot be negative.

What unit is used to measure Radius of Curve?

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

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