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- Observers stationed at two sections XX and YY, 1000 ft apart on a highway, record the arrival times of four vehicles as shown in the table below. Vehicle Section XX Section YY A T0 T0 + 14.33 sec B T0 + 3.76 sec T0 + 18.14 sec C T0 + 7.94 sec T0 + 22.06 sec D T0 + 12.13 sec T0 + 27.87 sec If the total time of observation at XX was 20 sec, determine (a) the time mean speed, (b) the space mean speed, (c) the flow at section XX, and (d) the density on the highwayThe following speed data Was collected Using a radar gun on an arterial street. Estima te Speed Group (mph) Frequency 10 17 36 66 84 16-20 a) time mean speed 2) -25 26-30 31-35 36-40 41-45 46-50 ら1-55 56-60 b) 85 *t*percentile speed c) Modal speed d) Pace 70 50 21For a given control stations the following data are: (A) Typical hourly variation of traffic volume. Hour volume Hour volume 6:00-7:00 am 185 6:00-7:00 402 7:00-8:00 254 7:00-8:00 489 8:00-9:00 316 8:00-9:00 456 9:00-10:00 376 9:00-10:00 327 10:00-11:00 289 10:00-11:00 210 11:00-12:00 259 Mid. night 175 12:00-1:00 pm 226 12:00-1:00 83 1:00-2:00 221 1:00-2:00 47 2:00-3:00 286 2:00-3:00 18 3:00-4:00 427 3:00-4:00 25 4:00-5:00 354 4:00-5:00 56 5:00-6:00 341 5:00-6:00 90 (B) Typical daily variation of traffic volume. Day Volume Sunday Monday Tuesday Wednesday Thursday Friday Saturday 3380 4223 3086 3119 3146 3409 3843 (C) Typical seasonal variation of traffic volume. Month Jan. Feb. Mar Apr May June Volume 80000 74375 85625 101250 104375 109500 Month July 111500 Aug. Sep. 119250 Act. Nov. Dec. Volume 121000 105000 92880 87625 1) The traffic volume count (8:00-9:00) am was 665 vph and (4:00-5:00) pm is was 535vph made on Wednesday/ February; Find the ADT and AADT by using the previous…
- 44 LTE !:: 12:29 HW4 ) جوالي College of Engineering Cl Engineering Department Northern Border University Faculty of engincering Department of Civil Engineering 1401380: Traffic and Transportation Engineering Dr. Abdelkader Mabrouk Home Work 4 Exercise: A section of rural 2 lane highway is to be designed to carry a peak hour volume of 1500 on a level terrain. Determine the level of service at which it will operate using the following data: V Lane width = 11 ft V No passing zone = 20% Directional split = 60/40 V Decimal fraction of trucks = 0.10 V Decimal fraction of recreational vehicles = 0.04 V Decimal fraction of buses = 0.01 Shoulder width = 6 ft PHF = 0.95Compute 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 mDesign a two phase signal for the VCI = 400 PCU/hr V250 PCU/hr SE = 1250 PCU/hr data using All red for pedestrain crossing mindbook 11 -SE = 1000 PCU/hr Webster method =125ee
- Part 2 - Solving: Observers stationed at two sections A-A and B-B, 200 m apart on a highway, record the arrival times of four vehicles as shown in the table. %3 Vehicle Section A-A Section B-B To + 7.6 sec To + 10.4 sec To + 15.1 sec I To + 23.4 sec If the total time of observation at A-A was 20 seconds, determine: (a) the time mean speed in A To + 4.2 sec To + 8.7 sec To + 13.7 seC B C KPH, (b) the space mean speed in KPH, (c) the flow at section A-A in veh/hr, (d) time headway in seconds, and (c) traffic density in veh/km. 5 points each.QUESTION 3 Match the term with its definition. ✓ phase ✓ interval ✓ cycle ✓ring ✓ barrier A. the total time to complete one sequence of signalization for all movements at an intersection B. a continuous sequence of phases C. reference within the cycle at which time a phase in each ring terminates, separating conflicting movements such as east-west from north-south D. the time given to opposing left turn movements E. duration of time during which the signal indications do not change F. the green, change and clearance intervals assigned to a specific movement or movements of traffic2. Figure shows the captured aerial photography showing the locations and speeds of 4 vehicles travelling between section x & y. An observer located at X observes the four(4) vehicles passing pt X during a period of 15 sec. Calculate the following: a) Space Mean Speed b) Time Mean Speed c) Average Spacing d) Headway 60 kph 40 kph 45 kph 55 kph Direction D B A of flow 300m
- For the given speed information below: Speed class 28-31.9 32-35.9 36-39.9 40-43.9 44-47.9 48-51.9 52-55.9 56-59.9 60-63.9 64-67.9 (mi/hr) Frequency 1 3 The 85th percentile speed is approximately.. 6 4 8 (mi/hr). 11 10 11 8 2A. On a six-lane EDSA, an observer is stationed at a certain spot. Alt of the cars in lane lare moving ata speed of 75 kph, 62 kph in lane 2, and 100 kph in lane 3, 65 kph in lane 4, 80 in lane 5 and 90 for the bus lane respectively. In addition, cars are kept at a constant 85-meter distance between. What will be the time-mean speed and space- mean speed for such a traffic stream based on the acquired spot speed data for all cars as they cross the observation site for 45 minutes?Table 1 Speed and Delay Information. Street Name: 29 North Weather: Clear Cross Streets Ivy Road Massie Road Arlington Blvd. Wise Street Barracks Road Angus Road Hydraulic Road Seminole Court Greenbrier Drive Premier Court Fashion Square I Fashion Square II Rio Road Totals Distance (ft) Date: July 7, 1994 Non-peak Time: 2:00 3:00 p.m. Ideal Travel Segment Stop Time Reason Speed Travel Segment Net for Limi Time Delay Speed (mi/h) (sec) Stoppage (mi/h Speed Time (sec) (sec) (sec) (mi/h) 0 0.0 1584 42.6 1320 27.7 792 19.7 27.4 1320 32.1 28.0 2244 49.8 30.7 1584 24.4 44.3 1584 42.6 25.4 1848 41.5 30.4 1320 37.4 24.1 1584 23.6 45.8 1056 19.7 36.5 1056 20.2 35.6 17292 381.3 30.9 119.5 0.0 20.1 0.0 8.9 15.4 Signal 9.2 0.0 19.5 15.6 11.8 4.9 0.0 14.1 Signal 45 25.4 32.5 How calculate ? Help me please Signal Signal Signal Signal Signal Signal Signal 40 40 40 40 40 45 45 45 45 45 45 0.0 27.0 22.5 13.5 22.5 38.3 24.0 24.0 28.0 20.0 24.0 16.0 16.0 275.8 0.0 15.6 5.2 6.2 9.6 11.5 0.4 18.6 13.5 17.4…