Based on the following traffic speed frequency table, the median and 85th percentile speeds are approximately & .....* respectively. Speed class 30- <40 40- <50 50- <60 60- <70 70- <80 80- <90 90- <100 100- <110 (kph) Frequency 5 8 12 20 25 22 15 8
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- 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?Question (1) Traffic Volume on a four lane freeway (two lanes in each direction) were counted manually from an overhead location resulting in the data shown belowTime of count Eastbound westboundLane 1 Lane 2 Lane 1 Lane 24:00-4:15 360 3104:16-4:30 350 285 4:30-4:45 380 3304:46-5:00 370 300 5:01-5:15 370 3405:16-5:30 345 280 5:31-5:45 340 3105:46-6:00 320 260 a) The peak hour factor for each direction and each lane.b) The design hourly volume for each direction and each lane.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 «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 highwaySpot 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 0Based on the following traffic speed frequency table, the mean speed and mode speed are approximately . & respectively. Speed class 30- <40 40- <50 50- <60 60- <70 70- <80 80- <90 90- <100 100- <110 (kph) Frequency 8. 12 20 25 22 15 8.4. Given the utility expression UK = where Ta is the access time, Tw is the waiting time, Tr is the riding time, and C is the out-of-pocket cost. For the automobile mode (AK = -0.005) and a mass-transit mode (Ak = -0.05). Mode AK 0.05Ta 0.04T - 0.03T, -0.02C Auto Transit Ta 5 10 Tw 0 10 Answer the following questions: What is the utility of auto? What is the utility of transit? What is the share of the automobile mode using Logit model? What is the share of the transit mode using Logit model? Tr 30 40 с 100 50 What is the utility of transit if the bus out-of-pocket doubles? What is the patronage shift of transit resulted from doubling the bus out-of-pocket cost?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 1 The approaches of a 4-leg signalized intersection are configured with 1 NB lane, 1 SB lane, 1 EB lane, and 1 WB lane and each of these lanes serves LT, TH, and RT movements. The following volumes and phasing are provided. approach EB WB NB SB movement LT TH RT LT TH RT LT TH RT LT TH RT volume 120 480 160 80 560 100 20 200 40 12 160 48 2 6 What is the critical sum for the EB/WB barrier?Estimate the maximum number of cars in a single lane of traffic that would pass a check-point in one hour at an average speed of 50 mph. Safe driving practice requires one car length of spacing for each 10 mph speed. (a) Layout the procedure for making the estimation including assumptions, diagrams, equations, etc.The 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 21Traffic volumes on multilane highways O a. 15000 – 35000 veh/h. O b. 20000 – 40000 veh/h. Oc. 15000 – 40000 veh/h. O d. 20000 – 35000 veh/h.SEE MORE QUESTIONS