Page:NTSB RAR-77-10.pdf/31

- 28 - APPENDIX D

The geometry of the curve at Wabash and Lake, proceeding north and west is as follows:

Run off is 1/8 inch in 3 feet.

The equilibrium speed for the 89.77—ft radius curve is 10 mph. The theoretical overturning speed is in excess of 30 mph.