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- A car travels at a costants speed of 100kph when its initial position is 400m measured horizontally and whose vertical terrain is given by the equation y=0.0003x^2. (A) Compute the radius of curvature at its initial position. (B) Find the total acceleration of the car if the position of the car is 200m from its initial positionThe radius of a highway curve is 120m, and has an angle of 9.31° from the horizontal. The center of gravity of the car is located 0.80m above the roadway and the distance between the two front wheels is 1.2m. If the car has a total weight of 15KN, a. Determine the normal acceleration and the velocity (in kph) of the car before overturning? b. Find the maximum velocity of the car could move along the curve so that there will be no outstanding pressure between the tires and the roadway. c. If the coefficient of kinetic friction is 0.60, what is the maximum velocity (in kph) of the car without sliding?A road is being designed for a speed of 110 km/hron a horizontal curve with a super elevation of 8%.If the coefficient of side friction is 0.10, theminimum radius of the curve (in m) required forsafe vehicular movement is..
- A car is entering a curve of radius 190m with a velocity of 165kph. Determine the angle of banking of the track to prevent the 1435kg car from sliding down the track. The coefficient of friction between the tires and the track is 0.30.The spacing of the cars moving along the same lane of an expressway is 40 m center to center. If the average velocity of the car is 60 kph, determine the volume of traffic in veh/hr.A two lane rural highway has to be designed for a design speed of 100 kmph . At sompe point on the highway there is circular horizontal curve having diameter of 400 m and super elevation rate of 8 percent. Estimate the allowable speed on the mentioned horizontal curve of the highway.
- The banking angle of a curved road with radius of curvature 47m, for a design speed of 760km / h .What should be the maximum speed (mph) of a car traveling on a leveled (zero grade) road surface if the available stopping sight distance is 400 ft? Assume 1.5 s of reaction time and braking friction coefficient of 0.35.A car accelerates for t sec from rest to a velocity of 48 ft. per sec, the acceleration increasing uniformly from zero to 12 ft. pre sec². During the next 4 sec, the car decelerates at a constant rate to a velocity of 4 ft. per sec. Sketch the a-t, v-t and s-t curves
- The average spacing of the cars moving along the same lane of an expressway is 54.3 m center to center. Determine the volume of traffic in veh/hr if the average velocity of the cars is 51 kph.A vehicle travelling at design speed of 80 kmph on a descending gradient of 2.5% meets on ascending grade of 3%. Calculate the minimum length of vertical curve required (in meters) to facilitate smooth movement of vehicle considering head light sight distance of 100 m and assume that passenger is comfortable is all conditions,The figure shows two possible paths for negotiating an unbanked turn on a horizontal portion of a race course. Path A-A follows the centerline of the road and has a radius of curvature ρA = 84 m, while path B-B uses the width of the road to good advantage in increasing the radius of curvature to ρB = 212 m. If the drivers limit their speeds in their curves so that the lateral acceleration does not exceed 0.90g, determine the maximum speed for each path.