Geometric feature  Euler’s spiral  Proposed spiral 
Definition 


Spiral length, L_{s} 


Projection of spiral on xaxis, (∆x). 


xcoordinate of start of spiral 


Spiral angle 


Long tangent, T_{1} 


Short tangent, T_{2} 


xcoordinate of intersection of T_{1} and T_{2} 

(i.e. at PC) 