PRINCIPLES OF HIGHWAY ENGINEERING+TRAFF
7th Edition
ISBN: 9781119688372
Author: Mannering
Publisher: WILEY
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Question
Chapter 2, Problem 39P
To determine
The distance of the car when the driver first sees the child to stop just in time.
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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.
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Chapter 2 Solutions
PRINCIPLES OF HIGHWAY ENGINEERING+TRAFF
Ch. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10P
Ch. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - Prob. 36PCh. 2 - Prob. 37PCh. 2 - Prob. 38PCh. 2 - Prob. 39PCh. 2 - Prob. 40P
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- For the STOP-controlled intersection show below, is the sight distance sufficient for safe operations? If not, what do you recommend? Again, you may assume that a traffic signal is not warranted at this location. All grades are level, and the standard reaction time of 2.5 s may be used. Lane widths on the E-W street are 12 ft. 45 mi/h 45 mi/h 30 ft : 30 mi/h 50 ft 35 ft 28 ft Building Buildingarrow_forwardQ2/ A track traveling at 25mph is approaching a stop sign. At time to and a distance of 60 ft the track begins to slow down by decelerating at 14 ft/sec? .do you think the track be able to stop in time.arrow_forwardA child accidentally runs into the street in front of an approaching vehicle. The vehicle is traveling at 65 kph. Assuming the road is level and f = 0.35, at what distance must the driver first see the child to stop just in time? A 47.5 m B 45.1 m 97.2 m D 92.6 marrow_forward
- 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.arrow_forwardA child accidentally runs into the street in front of an approaching vehicle. The vehicle is traveling at 65 kph. Assuming the road is level and f = 0.35, at what distance must the driver first see the child to stop just in time? A) 45.1 m 97.2 m 47.5 m 92.6 marrow_forwardWhat should be the maximum speed (mph) of a car traveling on a leveled (zero grade) road surface if the available stopping sight distance is 400 ft? Assume 1.5 s of reaction time and braking friction coefficient of 0.35.arrow_forward
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