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###### Transportation & Road Geometry Design:

Stopping Sight Distance - Skidding Coefficient
• Calculate the stopping sight distance using the skidding coefficient.

Stopping Sight Distance - Deceleration Rate
• Calculate the stopping sight distance using the vehicle deceleration rate.

Skidding Distance
• Calculate the skidding distance.
Braking Distance
• Calculate the braking distance after a vehicle engages its brakes.
Curve Banking Angle
• Calculate the required banking angle of a horizontal curve.
Tangent Runout and Superelevation Runoff Dist.
• Calculate the tangent runoff and the superelevation runoff distance for a banked horizontal curve.
• Calculate the minimum curve radius required.
Length Crest Vrt Crv - Stop Sight Dist.
• Calculate the minimum length of crest vertical curve based on stopping sight distance.
Stop Sight Dist - Crest Vrt Crv
• Calculate the minimum stopping sight distance for a crest vertical curve.
Length Crest Vrt Crv - Pass Sight Dist
• Calculate the minimum length of crest vertical curve based on passing sight distance.
Pass Sight Dist - Crest Vrt Crv
• Calculate the minimum passing sight distance for a crest vertical curve.
Length Sag Vrt Crv - Stop Sight Dist
• Calculate the minimum length of sag vertical curve based on stopping sight distance.
Length Sag Vrt Crv - Rider Comfort
• Calculate the minimum length of sag vertical curve based on rider comfort.
Horiz. Crv - Central Angle
• Calculate the central angle of a horizontal curve.
Horiz. Crv - Chord Length
• Calculate the chord length of a horizontal curve.
• Calculate the radius of a horizontal curve.
Horiz. Crv - Deg. of Crv.
• Calculate the degree of curve of a horizontal curve.
Horiz. Crv - Length of Crv.
• Calculate the length of curve of a horizontal curve.
Horiz. Crv - PI to PC/PT Dist.
• Calculate the distance from the point of intersection (PI) to the point of curvature (PC)/point of tangency (PT) of a horizontal curve.
Horiz. Crv - Tangent Offset
• Calculate the tangent offset to a point on the horizontal curve.
Horiz. Crv - Offset Angle
• Calculate the offset angle for a horizontal curve.
• Calculate the grade change for a vertical curve.
Vert. Crv - Point Elevation
• Calculate the elevation of a point on a vertical curve.
Vert. Crv - Turning Point
• Calculate the turning point of vertical curve.
Vert. Crv - Middle Ordinate
• Calculate the middle ordinate of a vertical curve.
Spiral Crv - Spiral Length
• Calculate the length of a spiral for a spiral curve.
Spiral Crv - Deflection Angle
• Calculate the deflection angle of a spiral curve.
Spiral Crv - Required Length
• Calculate the required length of a spiral curve.
Transportation Problem 1
• Calculate the passing sight distance for a crest vertical curve.
Transportation Problem 2
• Calculate the elevation of the PVI of a crest vertical curve.

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