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Tools
Roadway Design
Crest Vertical Curve S > L
Crest Vertical Curve S < L
Sag Vertical Curve S > L
Sag Vertical Curve S < L
Safe Speed Horizontal
   Curve V > 50 mph
Safe Speed Horizontal
   Curve V < 50 mph
Radius of Horizontal
   Curve w/ Sight
   Obstruction
Hydrology

Tools

(Supported by NJDOT Standards and Guidance Documents)


Roadway Design Tool

Safe Speed For Horizontal Curves When
V is greater than 50 mph
Based on "A Policy on Geometric Design of Highways and Streets", 2001


U.S. Customary English Units

This program calculates Safe Speed for horizontal curves when V is greater than 50 mph. Source Reference

V = 0.5 ( -.03R + ( (.03R)2+ 4R((15E/100) + 3.6 )1/2)

Enter R and E

R = Radius of Horizontal Curve (ft.)

E = Superelevation
(percent)


 

Safe Speed for Horizontal Curve (mph)
 
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  Last Updated:  September 1, 2010