The following speed data was collected Using a radar gun on an arterial street. Speed Group (mph) Frequency 10 17 36 66 84 Estima te 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*peccentile speed c) Modal speed d) Pace 70 50 21
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- 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.o): Data below for the traffic spot speed were detained by Enoscope over a base line of 70 m. compute TMS and SMS. Speed Range (km/hr) 45-55 Frequency 1 55-65 65-75 75-85 2 1 3QUESTION 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 traffic
- The following are the inputs to perform an analysis for the Level of Service (LOS) in traffic signal analysis, except: А. Cycle time В. Saturation flow C. Delay D. IntergreenObservers 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 total lost time of a signal is 13 seconds. If the sum of the critical flow ratios, Yc, is 0.834, what is the optimal cycle time (rounded to the nearest second)? Group of answer choices 128 sec 108 sec 148 sec 147 sec
- 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.2. 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 300mFor 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 2
- Q-3 A_ A vehicle traveled from city A to city B With average speed 120 km/hr, In the same time another vehicle traveled from city B to city A With average speed 90 km/hr,where and when the two vehicle will be connect if the distance between A and B 200 Km?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 0QUESTION 3 Fill in the following blanks for different signal components: • The collection of multiple signal sections serving a particular movement is called signal • Signal • Signal ● Signal is used to restrict the signal indication to one lane only and not other lanes. houses all parts of a signal (lens, light, etc.) changes the colors indicated by signal lamps according to a fixed or variable plan.