Example: Traffic volumes for each 10 minutes interval have been collected on a highway as shown in the Table below. Estimate traffic volume, peak hour factor and flow rate. Time Cars Buses and trucks 7:30 - 7:40 320 22 7:40 - 7:50 400 13 7:50 - 8:00 450 34 8:00 - 8:10 430 23 8:10 - 8:20 350 14 8:15 - 8:30 300 20

Example: Traffic volumes for each 10 minutes interval have been collected on a highway as shown in the Table below. Estimate traffic volume, peak hour factor and flow rate. Time Cars Buses and trucks 7:30 - 7:40 320 22 7:40 - 7:50 400 13 7:50 - 8:00 450 34 8:00 - 8:10 430 23 8:10 - 8:20 350 14 8:15 - 8:30 300 20

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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6. (a) Define the peak hour factor (PHF) (b) Explain the traffic condition when PHF=1. 7. The following table shows traffic flow data collected at the main road in an urban area, in two successive days during the peak period Day one Day two Time Flow (veh) Flow (veh) 7:30 – 7:45 900 7:45 – 8:00 950 960 8:00 – 8:15 1010 1015 8:15 – 8:30 990 980 (a) Determine the peak hour factor (PHF) (b) Estimate the missing traffic flow count (x) on day two.
7. The following table shows traffic flow data collected at the main road in an urban area, in two successive days during the peak period Day one Flow (veh) Day two Time Flow (veh) 7:30 – 7:45 7:45 – 8:00 900 950 960 8:00 – 8:15 1010 1015 8:15 – 8:30 990 980 (a) Determine the peak hour factor (PHF) (b) Estimate the missing traffic flow count (x) on day two.
Find Pace for data shown in table below which below represents speed spot study (SSS) data that recorded from urban collector highway in Tikrit city. E No. 1234 5 6 789 Speed group (mph) 20-25 25-30 30-35 35-40 40-45 45 - 50 50-55 55 - 60 60-65 Frequency (f) 0 4 13 28 41 37 22 9 0
5-4.. The following traffic count data were taken from a per- manent detector location on a major state highway. 1. 2. 3. 4. 5. Month No. of Total Total Total Weekdays Days in Monthly Weekday Volume in Month Month Volume (days) (days) (vehs) (vehs) 200,000 210,000 215,000 205,000 195,000 193,000 180,000 175,000 189,000 170,000 171,000 Jan 22 31 Feb 20 28 185,000 180,000: 172,000 168,000 160,000 150,000 -175,000 178,000 182,000 176,000 Mar 22 31 30 Apr May Jun 22 21 31 22 30 Jul 23 31 21 31 Aug Sep Oct 22 30 198,000 205,000 200,000 22 31 Nov 21 30 Dec 22 31 From this data, determine (a) the AADT, (b) the ADT for each month, (c) the AAWT, and (d) the AWT for each month. From this information, what can be dis- cerned about the character of the facility and the demand it serves?
Spot speed study was carried out redesign the stretch of major district road. The data collected during th estudy is given below. (1) (ii) Speed Range kmph 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 90-100 Frequency of vehicles Cars Two Wheelers 5 20 24 20 30 35 25 10 10 1 0 6 12 30 60 35 35 15 18 9 What is the design speed for redesigning existing MDR? What are upper and lowe speed limits for mixed traffic? Others 0 4 4 5 30 30 15 10 2 0
uestion 18 The density of traffic in a certain observation point on a highway was recorded to be 30 veh/km. If the space mean speed of the vehicle is 50 kph, how many vehicles will be passing every 30 minutes O A. 25.5 O B. 750 O C. 12.5 O D. 13 O E. None of the above «
At a specified point on a highway, vehicles are known to arrive according to a Poissonprocess. Vehicles are counted in 30-second intervals, and vehicle counts are taken in 120 ofthese time intervals. It is noted that no cars arrive in 18 of these 120 intervals. a) Approximate the number of these 120 intervals in which exactly three cars arrive. b) Estimate the Percentage of time headways that will be 10 seconds or greater andthose that will be less than 6 seconds.
H.W: Traffic volume data has been collected for 10 min time intervals as shown below. Find the total hourly volume, flow rate and PHF. Time 7:30-7:40 7:40-7:50 7:50-8:00 8:00-8:10 8:10-8:20 8:20-8:30 Volume 250 280 300 200 150 130
Consider the following plot of cumulative arriving and departing vehicles at a freeway bottleneck location: Vehicles 20,000 15,000 10,000 5,000 0 0 30 60 90 120 150 180 210 240 270 300 330 360 Time (mins) Arrivals (vehs) Departures (vehs) From this plot, determine the following: A. What is the capacity of the bottleneck location? 9000 whole number, i.e. X000.) B. What is the maximum size of the queue that develops? 3250 whole number, i.e. X000.) C. What is the longest wait time that any vehicle experiences during the breakdown? to the nearest whole number, i.e. XX.) (Hint: Provide the answer as a numerical number only in units of vehicles per hour and rounded to the nearest thousand (Hint: Provide the answer as a numerical number only in units of vehicles and rounded to the nearest thousand (Hint: Provide the answer as a numerical number only in units of minutes and rounded
Example - Floating car method The data collected from speed and delay studies by floating car method on a stretch of urban road of length 3.5 km, running North-South are given below. Determine the average values of volume, journey speed and running speed & SMS of the traffic stream along either direction. Trip Direction of Journey trip time No. 1234S00 5 6 7 8 N-S S-N N-S S-N N-S S-N N-S S-N Total stop No. of delay vehicles Min-Sec Min-Sec overtaking 6-32 7-14 6-5 7-40 6-10 8-00 6-28 7-30 1-40 1-50 1-30 2-00 1-10 2-22 1-40 1-40 4552 M N N M 3 2 2 3 No. of vehicle overtaken 733L5252 1 No. of vehicles from opposite direction 268 186 280 200 250 170 290 160
from the following data of a freeway surveillance, there are 5 vehicles traveling distances "S" when observed on the two photographs taken every 2 seconds apart. Vehicles “S" (meters) 1 24.4 2 18.8 3 24.7 4 26.9 5 22.6 Determine the flow of traffic. Group of answer choices 8000 yph. 8500 yph 9000 yph 9500 yph.
The Table below shows the data collected on a urban highway in Accra during a speed study. Develop the frequency histogram and the frequency distribution of the data and determine: i. The arithmetic mean speed ii. The standard deviation The median speed The mode or modal speed iii. iv. The 85th-percentile speed v. ** use the intervals of 34 - 35.9, 36– 37.9, 38– 39.9 and so on.... Speed (km/h) Speed (km/h) Car Speed (km/h) Car Car Car Speed (km/h) No. No. No. No. 35.1 46.1 56.0 23 24 45 47.8 67 44.0 54.2 46 47.1 68 49.1 45.8 25 52.3 47 34.8 69 49.2 44.3 26 57.3 48 52.4 70 56.4 36.3 27 46.8 49 49.1 37.1 71 48.5 57.8 36.8 45.4 48.6 6 54.0 28 50 72 42.1 29 51 65.0 73 8. 50.1 30 55.8 52 49.5 74 52.0 51.8 50.8 9 31 43.3 53 52.2 75 49.8 10 32 55.3 54 48.4 76 63.4 11 38.3 33 39.0 55 42.8 77 60.1 12 44.6 34 53.7 56 49.5 78 488 13 45.2 35 40,8 57 48.6 79 52.1 14 41.1 36 54.5 58 41.2 80 48.7 15 35.1 37 51.6 59 48.0 81 61.8 16 50.2 38 51.7 60 58.0 82 56.6 17 54.3 39 50.3 61 49.0 83 48.2 18 45.4…