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- 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 mDraw the diagram and compute the passing sight distance for the following data:Speed of the passing car = 96 kphSpeed of the overtaken vehicle = 88 kphTine of initial maneuver = 4.3 secAverage acceleration = 2.37 kph/secTime passing vehicle occupies the left lane = 10.4 secDistance between the passing vehicle at the end of its maneuver and the opposing vehicle = 76 mThe driver of a car travelling at a certain speed suddenly sees an obstruction ahead and travelled a distance of 55.8 m during the perception time of 1.45 sec. Determine the car's speed of approach in kph a.136.54 kph b.140.54 kph c.138.54 kph d.138.00 kph
- Assume you are an observer standing at a point along a three-lane roadway. All vehicles in lane 1 are traveling at 30 mi/h, all vehicles in lane 2 are traveling at 45 mi/h, and all vehicles in lane 3 are traveling at 60 mi/h. There is also a constant spacing of 0.5 milebetween vehicles. If you collect spot speed data for all vehicles as they cross your observation point, for 30 minutes, what will be the time-mean speed and space meanspeed for this traffic stream?The driver of a car travelling at a certain speed suddenly sees an obstruction ahead and travelled a distance of 55.8 m during the perception time of 1.45 sec. Determine the car's speed of approach in kph.Repeat the previous problem, only now the driver of car A is traveling at VA = 130 km/h as it passes P, but over the next 5 seconds, the car uniformly decelerates to the speed limit of 100 km /h, and after that the speed limit is maintained. If the motion of the police car P remains as described in the previous problem, determine the distance required for police officer to overtake car A. Ans. 330 m
- Assume you are an observer standing at a point along a three-lane roadway. All vehicles in lane 1 are traveling at 48 kph, all vehicles in lane 2 are traveling at 72 kph, and all vehicles in lane 3 are traveling at 97 kph. There is also a constant spacing of 75 m between vehicles. If you collect spot speed data for all vehicles as they cross your observation point, for 30 minutes, what will be the time-mean speed and space-mean speed for this traffic stream?Assume you are an observer standing at a point along a three-lane roadway. All vehicles in lane 1 are traveling at 48 kph, all vehicles in lane 2 are traveling at 72 kph, and all vehicles in lane 3 are traveling at 97 kph. There is also a constant spacing of 75 m between vehicles. If you collect spot speed data for all vehicles as they cross your observation point, for 30 minutes, what will be the time-mean speed and space-mean speed for this traffic stream? thank youAn 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.
- 1. The rate flow at a point in the highway is 1200 vehicles/hour. Find the space mean speed in mph if the density of traffic is 25 vehicles per mile 2. Assume you are observing traffic in a single lane of McArthur Highway at a specific location. You measure the average headway and average spacing of the vehicles as 3.2sec. and 50 m. respectively. Determine the traffic speed in kilometer/hourCompute 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 mImagine you are recording speed at a point along a three-laneroadway. All vehicles in lane 1 are traveling at 60 mi/h, all vehicles in lane 2 are traveling at 30 mi/h, and all vehicles in lane 3 are traveling at 45 mi/h. There is also a constant spacing of 3168 ft. between vehicles. If you collect spot speed data for all vehicles as they cross your observation point, for 60 minutes, what will be the time-mean speed and space mean speed for this traffic stream?