(30 points) A tow truck is searching a city street at 50 mi/h for illegally parked vehicles. It travels over an equal tangent vertical curve with an initial grade of +1.25% and final grade of-2.25%. If the height of the driver's eye is 6.0 ft and the driver spots a car 375 ft away with a height of 4.0 ft, what is the minimum length of the vertical curve for this situation?
Added by Robert W.
Step 1
In this case, the driver's eye height is 6.0 ft, and the height of the car being spotted is 4.0 ft. We can use the formula for sight distance (SD) as follows: SD = 2 * (driver's eye height - car height) / (initial grade - final grade) Show more…
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