Compute the minimum required sight distance to avoid a collision for two-way traffic with single lane with a car approaching from the opposite directions if both cars are moving at a speed of 80 kph. Total perception and reaction time is 2.5 sec. coefficient of friction is 0.40 and brake efficiency is 50%.
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- 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 = 80mCompute 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 mDetermine 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
- lif the dwsign speed of a multilane highway is 100km/hr what is the minimum sight distance that should be provided on the road if a.the road is horizontal and b.the road has a maximum upgrade of 4% assume perception reaction time=2.5secFor a total reaction time of 2.5s, coefficient of friction 0.35, design speed 80kph, what is the stopping safe distance on a highway? a. 71.91m b. 143.83m c. 199.38m d. 127.47mA car (SEDAN) is to overtake a bus as it enters an acceleration lane. The speed of the SEDAN is 80 kph initially. The bus is at the same speed as the SEDAN. Given the perception reaction time as 2.70 seconds and the average acceleration of the vehicle is 2.55 m/s2, solve the: a. The passing sight distance (in furlong) that the SEDAN could move while overtaking the slow-moving bus before meeting the on-coming opposing vehicle if the velocity of SEDAN increases to 90 kph and the time for it tooccupy the left lane is 12.50 seconds. The opposing vehicle travels at a speed of 70 kph and the time for it to reach a point before it passes the SEDAN is 0.18 minutes. The between the SEDAN at the end of its and the opposing vehicle is 91.60 yards.
- 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=4sec, Average acceleration=2.4kph/sec, Time passing the vehicle occupies the left lane=9sec, Distance between the vehicle at the end of its maneuver and the opposing vehicle=80mCOMPUTE 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 KPHFind minimum sight distance to avoid head-on collision of two cars approaching at 90 kmph and 60kmph. Given t=2.5sec, f=0.7.
- Compute the required length of the safe stopping sight distance in a two-way traffic in a two-lane road If the design speed is 60kph. perception-reaction time of the driver is 2.6sec and the coefficient of friction between tires and pavement is 0.40. Assume the slope of roadway to be horizontal.if a cars initial velocity is 15 m/s to the right, locate the position of the car after 12s if its deceleration is 1.5m/s^2 and its initial position is 0m(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.