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- Compute the minimum passing sight distance forthe following data. Speed of passing car – 90kph Speed of overtaken vehicle – 80 kph Time of initial maneuver – 4 sec Ave. acceleration – 2.4 kph/sec2 Time passing vehicle occupies left lane – 9 sec Distance between passing vehicle at the end of its maneuver and opposing vehicle – 80 m4. A car is traveling downhill on a suburban road with a grade of 4% at a speed of 35 mph. Determine the required stopping sight distance.Determine the required total passing sight distance for the following: Speed of the passing car = 100 kph; Speed of the overtaken vehicle = 80 kph; Time of initial maneuvers = 5 sec; Time passing vehicle occupies left lane = 10 secs; Distance between the passing car and opposing car at the end of maneuver = 20 m; Average acceleration = 2.5 kph/sec. a. 502.75 m b. 602.75 m c. 702.75 m d. 402.75 m
- The following are specifications for traffic design of a highway:Speed of the passing car = 100 kphSpeed of the overtaken vehicle = 80 kphTime of initial maneuvers = 5 secTime passing vehicle occupies left lane = 10 secsDistance between the passing car and opposing car at the end of maneuver = 20 mAverage acceleration = 2.5 kph/sec. 1. Determine the required total passing sight distance for said road a. 502.75 m b. 602.75 m c. 702.75 m d. 402.75 m 1. Find the minimum required passing sight distance. a. 280.37 m b. 390.37 m c. 48.37 m d. 490.37 mSight Distance A driver is traveling at 55 mi/h on a wet road. An object is spotted on the road 450 ft ahead and the driver is able to come to a stop just before hitting the object. Assuming standard perception/reaction time, determine the grade of the road.COMPUTE THE MINUMUM PASSING SIGHT DISTANCE FOR THE FOLLOWING DATA: SPEED OF THE PASSING CAR = 90 KPH SPEED OF THE OVERTAKEN VEHICLE = 80 KPH TIME OF INITIAL MANEUVER = 4 SEC AVERAGE ACCELERATION = 2.4 KPH/SEC TIME PASSING VEHICLE OCCUPIES THE LEFT LANE = 9 SEC DISTANCE BETWEEN THE PASSING VEHICLE AT THE END OF ITS MENEUVER AND THE OPPOSING VEHICLE = 80 KPH
- A driver driving at 69 kph at a straight flat portion of the highway suddenly encounters an obstruction. He applies his brakes. If the coefficient of friction of the roadway to the tires is equal to 0.5, calculate the maximum safe distance (rounded to the nearest meters) the driver can apply his brakes to avoid collision. g = 9.81 m/s^2(TRAFFIC AND HIGHWAY ENGINEERING) A tall building is located 13.5 m from the centerline of the right lane of a local road and 19.5 m from the centerline of the right lane of an intersecting road in figure below. If the maximum speed limit on the intersecting road is 56 km/h, what should the speed limit on the local road be such that the minimum sight distance is provided to allow the drivers of approaching vehicles to avoid imminent collision by adjusting their speeds? Approach grades are 2 percent.An object travels from the origin along a curved path y=5x2/3. If its horizontal velocity is Vx=24t2 m/sec, where t is in seconds, determine the magnitude of its velocity, acceleration and distance from the origin at t=5sec.
- 43. A truck was travelling uphill at 50 kph. The brakes are suddenly applied and the truck stopped in a distance of 16.1 m. If the coefficient of friction between the tires and the road surface is 0.4, what is the grade of the road?Compute the minimum passing sight distance for the following data: Speed of the passing car = 90kph Speed of the overtaken vehicle = 80kph Time of initial maneuver = 4 sec Average acceleration = 2.4 m/sec2 Time the passing vehicle occupies the left lane = 9sec Distance between the passing vehicle at end of its maneuver and the opposing vehicle = 80mYou are a civil engineer who has been given the assignment to redesign the curved roadway in Example 6.3 in such a way that a car will not have to rely on friction to round the curve without skidding. In other words, a car moving at the designated speed can negotiate the curve even when the road is covered with ice. Such a road is usually banked, which means that the roadway is tilted toward the inside of the curve. Suppose the designated speed for the road is to be 13.4 m/s (30.0 mi/h) and the radiusof the curve is 35.0 m. You need to determine the angle at which the roadway on the curve should be banked.