Given the following spot speed data:Speed GroupObserved vehicles45-49550-531654-572958-613662-654166-692170-734A. Calculate the 15th, 50th, and 85th percentile.B. Recommend appropriate speed limits with justification.

Speed Group Observed Vehicles Cumulative No. of Vehicles 45-49 5 5 50-53 16 21 54-57 29…

Answered: Given the following spot speed data:…

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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The following data were taken on five vehicles travelling consecutively 1.5 km portion of the NLEX. Vehicle Time (minute) 1 1.2 1.0 3 1.4 4 1.3 1.1 Determine the time mean speed (kph) 76.07 75.00 O 76.00 O 75.07 2.
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Assume you are an observer standing at a point along a three‐lane roadway. All vehicles in lane 1 are traveling at 30 mi/hr, all vehicles in lane 2 are traveling at 45 mi/hr, and all vehicles in lane 3 are traveling at 60 mi/hr. The spacing between vehicles in each lane is 0.5 mile. If you collect spot speed data for all vehicles as they cross your observation point for 2 hours, what will be the time‐mean speed and space‐mean speed for this traffic stream?
Question 2: The collected data in Table (1) from speed and delay studies by floating car method on a segment of urban road of length 3.5km, running North-South are given in table below: Table (1) Collected field data Trip No. Direction Journey of Trip Total No. of No. of No. of time stopped delay Min. sec. vehicles vehicles vehicles Min. sec. overtaking overtaken from opp. direction 1 N-S 6 32 1 40 4 7 268 S-N 7 14 1 50 3 186 3 N-S 6 50 1 30 280 S-N 7 40 2 00 1 200 6 10 1 10 2 22 N-S 3 250 S-N 8 00 170 7 N-S 6 28 1 40 2 290 8. S-N 7 30 1 40 2 160 Estimate the average travel time for North -South and South – North directions respectively.
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plz, solve this problem, it is not graded question. Transportation Engineering-1
14.6 Car 15.2 Car 19.0 Truck 15.5 Car 14.3 Car 17.4 Truck 13.7 Car The vehicles were selected by sampling whatever vehicle was entering the section, choosing every 30 seconds. Estimate the time mean speed and the space mean speed, by vehicle type, and overall
An intersection has a three-phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in the table below. Assume the lost time is 4 seconds per phase and a critical intersection v/c of 0.90 is desired. Phase 3 Allowed movements NB L, SB L NB T/R, SB T/R EB L, WB L EB T/R, WB T/R Analysis flow rate 330, 365 veh/h 1125, 1075 veh/h 110, 80 veh/h 250, 285 veh/h Saturation flow rate 1700, 1750 veh/h 3400, 3300 veh/h 650, 600 veh/h 1750, 1800 veh/h Using v/c equalization ratio, calculate the effective green time for phase 1 O 15.954 sec O 12.105 sec O 14.127 sec O 13.190 sec
Question- Topic: Traffic Studies on Flow, Speed, Travel Time, Volume and Capacity The lost time due to starting delay on a traffic signal approach is noted to be 3 sec, the actual time is 20sec and the amber time is 3sec. How much is the effective green time? green
2. Describe the following types of traffic volume counts and explain when they are used: (a) screen-line counts, (b) cordon counts, (c) intersection counts, and (d) control counts.

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Given the following spot speed data: Speed Group Observed vehicles 45-49 5 50-53 16 54-57 29 58-61 36 62-65 41 66-69 21 70-73 4 A. Calculate the 15th, 50th, and 85th percentile. B. Recommend appropriate speed limits with justification.