REFINING VERTICAL ALIGNMENT STOPPING SIGHT DISTANCE The “K Values” shown are a coefficient by which the algebraic difference in grade may be multiplied to determine the length in feet of the vertical curve that will provide minimum sight distance Crest vertical curves shall meet or exceed AASHTO design criteria for Stopping Sight Distance, not the "k" Values
23. 3. 9. Geometric Design Criteria - City of Albuquerque The values for K shown in the following tables for Crest and Sag Vertical Curves are to be used in determining the minimum length of vertical curve required by the use of the relationship L = K•A where:
230. 2 Vertical Alignment - Engineering Policy Guide The minimum stopping sight distances and “K” factors for various anticipated operating speeds are given in the Green Book These controls are based on a 3 5 ft height of eye and a 2 0 ft height of object
Archived - 2011 Green Book - Geometric Design - Design - Federal . . . Several of these design standards and standard specifications were established by the American Association of State Highway and Transportation Officials (AASHTO) and the American Welding Society (AWS) and were previously adopted by FHWA through rulemaking
2011 Roadway Design Criteria Files - Autodesk Knowledge Network All numeric values were taken from A Policy on Geometric Design of Highways and Streets, 6th Edition, 2011, commonly referred to as the "Green Book," published by the American Association of State Highway and Transportation Officials (AASHTO) Minimum radii for non-superelevated roads were added
Design Calculated K Value Speed - IN. gov Calculated K Value (K = V 2 46 5) K Value Rounded For : Design 20 8 6 9 25 13 4 : 14 30 19 4 20 35 : 26 3 27 : 45 43 5 44 50 53 8 54 55 65 1 66 60 77 4 : 78 70 105 4 106 75 : 121 0 122 : KA AV L = = 46 5 2 Where: L = Length of vertical curve, ft A = Algebraic difference between grades, % K = Horizontal distance required to
VERTICAL CURVES - Bexar County, TX AASHTO indicates it is appropriate to use stopping sight distances for different design speeds as the value of S in the equations For local street intersections, where the K-value is on the street that has a stop sign control, a minimum design speed of 15 mph shall be used
IMPERIAL ROAD DESIGN MANUAL - vdot. virginia. gov The “K Values” shown are a coefficient by which the algebraic difference in grade may be multiplied to determine the length in feet of the vertical curve that will provide minimum sight distance Crest vertical curves shall meet or exceed AASHTO design criteria for Stopping Sight Distance, not the "k" Values
A Policy on Geometric Design of Highways and Streets, 2011 A Policy on Geometric Design of Highways and Streets, 2011 Green book: Author: American Association of State Highway and Transportation Officials: Publisher: AASHTO, 2011: ISBN: