The ideal form of curve for the summit curve is ____.
A. lemniscate
B. circular
C. spiral
D. parabola
Answer:B
The ideal form of curve for the summit curve is ____.
A. lemniscate B. circular C. spiral D. parabola
Explanation: The sight distance is constant throughout the length of the circular summit curve. In practice, we employ square parabolic curves since they are simple to compute and provide comfortable riding.