Traffic And Highway Engineering
5th Edition
ISBN: 9781133605157
Author: Garber, Nicholas J., Hoel, Lester A.
Publisher: Cengage Learning,
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Question
Chapter 3, Problem 5P
To determine
The average walking speed and compare it with the recommended walking speed in the Manualof Uniform Traffic Control Devices(MUTCD).
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Calculate the minimum passing sight distance required for a two-lane rural highway that has a posted limit of 72 kph. The local traffic engineer conducted a speed study of the subject road and found the following:
Average speed of passing vehicle= 76 kph
Average acceleration of passing vehicle= 2.3 kph/sec
Average speed of impeder vehicles= 64 kph
Show complete solution. Need ASAP. Thank you.
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Chapter 3 Solutions
Traffic And Highway Engineering
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- 28 pedestrians per cycle (both directions combined) use a crosswalk to cross a 72-ft wide street. The width of the crosswalk is 11 ft. If the walking speed is 3.5 ft/s, how much τi,ps should be allocated so that the pedestrians can safely cross? Group of answer choices 31.0 sec 21.2 sec 56 sec 52.8 secarrow_forwardThis is a three-part question. Data obtained from aerial photography showed eight vehicles on an 800 ft-long section of road. Traffic data collected at the same time indicated an average time headway of 3.7 sec. Part A. Determine the density on the highway in vehicles per mile. Part B. Determine the flow on the road in vehicles per hour. Part C. Determine the space mean speed in mph.arrow_forwardDetermine the yellow interval that eliminates a dilemma zone for a 20-foot-long passenger car traveling at 35 mph on a level approach to an intersection that is 24 feet wide. Assume 1 second for perception-reaction time.arrow_forward
- 3. An engineering student at Siliman Universty is driving on a level roadway and sees a construction sigh 600 feet ahead in the middle of the roadway. The student strikes the sign at a speed of 35 mph. If the student was traveling at 55 mph when the sign was first spotted, what was the student's associated perception/reaction time? Assume that the deceleration is 11.2 ft/s?.arrow_forwardQUESTION 10 During one hour, 1800 pedestrians passed by the observation point on the pedestrian walkway. The flow appeared to be relatively consistent over the hour (i.e. PHF-0.90). The effective walkway width was 5 ft. Pedestrian were moving at roughly 4.25 ft/sec. What was the observed average spacing (ft2/ped)? Record your answer to the nearest integer.arrow_forwardChoose the right answer Three vehicles are recorded with speeds of 80, 70, and 200 mi/h. Find average time mean speed for these three vehicles to traverse a section of 1 mile. a-80 b-70 c-60arrow_forward
- Question 48 Determine the impact factor for a highway curve having a radius of 1,600 ft and maximum design speed of 58 kph. Express your answer in 4 decimal places. A Moving to another question will save this response.arrow_forwardThe city received a complaint of afternoon traffic speeding in a residential area. The city suspected this was related to students leaving a nearby school. The first action taken by the city was to quantify the facts by conducting a spot speed study. The city decided to use the stopwatch method because of their limited resources. The Speed (mph) 21.4 22.2 23 24 Frequency of Vehicles 3. 25 26.1 27.2 28.9 30 31.5 33.3 35.2 37.5 9. 11 13 posted speed limit is 30 mph. The study was conducted on a Wednesday and started at 3:00 p.m. The time was selected to correspond to the period when most students leave the school. The study continued until a sample size of 100 9 10 10 9. 40 42.8 vehicles was measured.arrow_forward7. Three cars travel over a 50m section of highway at constant speeds of 19, 20, and 22m/s. Compute the time mean speed and space mean speed of this condition.arrow_forward
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