A vehicle has a wheelbase of 6.5 m. What is off-tracking while negotiating a curved path with a mean radius of 32 m?
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- A vehicle has a wheelbase of 6.5 m. What is off- tracking while negotiating a curved path with a mean radius of 32 m?A spiral easement curve has a length of 100m with a central curve having a radius of 310 m. The width of the road is 10m and design speed is 81 kph? a) What is the throw? (in meters) b) What is the spiral angle at the endpoints? (degrees) c) What is the spiral deflection angle at the endpoints? (in degrees) d) What is the superelevation at the central curve? (in meters) e) What is the offset distance from the tangent to the 3rd-quarter point of the spiral? (in meters)What is the minimum radius of curvature allowable for a roadway with a 100 kph design speed, assuming that the maximum allowable superelevation rate is 0:12? SHOW THE CORRECT SOLUTION. A. 328 m B. 283 m C. 832 m D. 490 m
- A vehicle encounters a sag parabolic curve on a night travel. The stationing at the vehicle at the point of study was 1349+998 meters and the stationing at the end of the curve is 1350+103. If the sight distance following standard design values is 114 meters, what is the value of the change of grade A in %?Sample Problem Two parallel highway roads are to be connected by a reverse curve, each section having the same radius. If the center lines are 30ft apart and the distance between the tangent points is 120ft, what will be the radius of the cross over?A vehicle encounters a sag parabolic curve. The stationing at the vehicle is 12+400 meters and the stationing at the end of the curve is 12+440. If the sight distance following standard design values is 32 meters, what is the value of the change of grade A in %? Note: 1m = 3.281 ft
- The rated speed of a 200-meter banked highway curve is 50 km per hour. the radius of the highway curve is 250 meters and the coefficient of friction between the tires and the road surface is 0.50. What is the angle of inclination (theta) of the banked highway curve?Problem 1: A.) Find the angle of banking for a highway curve of 90 meter radius designed to accommodate cars traveling at 160 kph if the coefficient of friction between the tires and the road is 0.60 B.) What is the rated speed of the curve?A spiral easement curve has a length of 100m with a central curve having a radius of 340 m. The width of the road is 10m and design speed is 84 kph? a) What is the throw? in meters b) What is the spiral angle at the endpoints? c) What is the spiral deflection angle at the endpoints? d) What is the superelevation at the central curve? in meters in degrees in degrees in meters e) What is the offset distance from the tangent to the 3rd-quarter point of the spiral?
- When aligning a highway in a traffic area, it is necessary to provide a horizontal circular curve of radius 295 m , if the design speed is 60 kph , determine the superelevation rate. ( Superelevation to fully counteract centrifugal force use only 75% of the design speed).1. The stopping sight distance on a curved section of a road is 500 ft. The superelevation of the curve is 4.5%. The current radius of the curve is 900 ft. What should be the design speed on the curve? (Using AASHTO tables)The stopping sight distance on a curved section of a road is 500 ft. The superelevation of the curve is 4.5%. The current radius of the curve is 900 ft. What should be the design speed on the curve? Use AASHTO tables