During a freeway safety review, you are studying a curve that is essentially 1/8

Question

During a freeway safety review, you are studying a curve that is essentially 1/8 of a circle with a radius of r=805 m . The curve is banked so that the road makes an angle of 4° to the horizontal throughout the curve. Your job is to begin the review by considering the worst-case scenario, a slick, ice-covered road, and finding the speed a standard passenger car (about 2000 lbs) must travel in order to maintain a horizontal path through the turn. The team you're working with will use this information along with other data to determine the speed limit on this road.

Explanation / Answer

v = sqrt(rg * tan theta)

v = 23.487 m/s

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