Speeds of 20 vehicles were observed as follows (in mph): 35.1 44.0 45.8 44.3 36.3 54.0 42.1 50.1 51.8 50.8 38.3 44.6 45.2 41.1 55.1 50.2 54.3 45.4 55.2 45.7 The speed ranges from 35.1 mph to 55.2 mph. Choose a range of 3 mi/h for each class staring from 35 mph. Determine- a) The arithmetic mean speed b) The standard deviation c) The median speed d) The pace e) The 85th percentile speed

Car A is traveling at a location where the speed limit is 100 km/h. The police officer in car P observes this speed via radar. The driver of car A is traveling at VA = 128 km/h as it passes P, but over the next 5.8 seconds, the car uniformly decelerates to the speed limit of 100 km/h, and after that the speed limit is maintained. At the moment when A passes P, the police car begins to accelerate at the constant rate of 5.9 m/s² until a speed of 168 km/h is achieved, and that speed is then maintained. Determine the distances required for the police officer to overtake car A. Answer: s= VA P m

The following speeds (75 80, 72, 77 - 79,87,69 and 65) in km/her were measured utes. The data. space mean for vehicle.com speed for This ·computes

Car A is traveling at a location where the speed limit is 100 km/h. The police officer in car P observes this speed via radar. The driver of car A is traveling at và = 122 km/h as it passes P, but over the next 4.1 seconds, the car uniformly decelerates to the speed limit of 100 km/h, and after that the speed limit is maintained. At the moment when A passes P, the police car begins to accelerate at the constant rate of 4.0 m/s² until a speed of 164 km/h is achieved, and that speed is then maintained. Determine the distance s required for the police officer to overtake car A. Answer: s= i VA 248.52 P m

Calculate safe overtaking sight distance for a two way traffic road for the following data. The speed of overtaking and overtaken vehicles are 50and 40kmph respectively. The acceleration is 3kmph/sec, design speed is 60 kmph and reaction time is 2seconds.

1. A Honda Civic is driven at 15 kph for 12 min, then at 40 kph for 20 min, and finally at 50 kph for 8 min. a. Calculate the average speed over the interval. (in kph) b. How fast must the honda civic move in the Last a min of travel to obtein an average speed of 55 kph? (in kph) Show FBD and complete and detailed solution.

Calculate the passing sight distance on a two lane road having the design speed of 86 kmph and reaction time 2 sec. Assume one way traffic. Take acceleration of overtaking and overtaken vehicle as 3 m/s2 and 1.5 m/s2 respectively. Assume that overtaken vehicle starts accelerating after the reaction time of overtaking vehicle. Take space headway as 18 m.

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