Transition curve is provided in horizontal alignment to ___.
A. enable the driver turn the steering for his own comfort and security.
B. enable gradual introduction of the designed superelevation and extra widening of pavement at the start of the circular curve.
C. introduce gradually the centrifugal force between the tangent point and the beginning of the circular curve, avoiding a sudden jerk on the vehicle.
D. All of the above
Answer:D
Transition curve is provided in horizontal alignment to ___.
A. enable the driver turn the steering for his own comfort and security. B. enable gradual introduction of the designed superelevation and extra widening of pavement at the start of the circular curve. C. introduce gradually the centrifugal force between the tangent point and the beginning of the circular curve, avoiding a sudden jerk on the vehicle. D. All of the above