Design of Horizontal Curves

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Methods of Distribution of Superelevation and Side Friction Method #2 • Used mostly for urban streets ○ Where speed is not uniform ○ Where constraints do not allow for superelevation • Superelevation is not needed on flatter curves that need less than maximum side friction for vehicles.
Methods of Distribution of Superelevation and Side Friction Method #5 • Superelevation and side friction distributed concurrently • Most practical
Page 1 and 2: Paul Deutsch NDDOT Office of Projec
Page 3 and 4: Why are Horizontal Curves Needed N
Page 5 and 6: Guidelines to Horizontal Curves A
Page 7 and 8: Parameters Design of roadway curve
Page 10 and 11: Superelevation Practical upper lim
Page 14 and 15: Finding Minimum Radius Minimum Rad
Page 16 and 17: Methods of Attaining Superelevation
Page 18 and 19: Superelevation Transitions Consist
Page 20 and 21: Runoff For appearance and comfort,
Page 22 and 23: Runoff NDDOT uses a Desired Relati
Page 24 and 25: Runout
Page 26 and 27: Equation for minimum length of supe
Page 28 and 29: Spiral Curves Simple Curve Spiral T
Page 30: Superelevation Tables Incorporatin
Page 34 and 35: Main Points Considerations for Hor
Page 36: Sources ○ A Policy on Geometric D

Design of Horizontal Curves

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