PROBLEM 6:Four vehicles passing through the SLEX has the following observation. Determine thetime mean speed.Vehicles Time of passing (sec) | Spot speed (kph)11.555.426.056.838.053.6412.0048.9

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Answered: PROBLEM 6: Four vehicles passing…

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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On a four legs rotary intersection, the width of both crossed urban streets is equal to 10.0m in each direction. Assume the central island circumference equals 157m, and a circulating width equals 12.0m. Calculate the control delay (seconds) using the Jordanian empirical method based on the following peak hour traffic volumes: Leg U-Turn L-Turn Through R-Turn EB 145 172 1056 409 WB 132 285 1793 462 NB 56 120 476 192 SB 96 149 582 221 • Round your answer to the nearest two decimal places. Answer: 14.332
There are 5 vehicles passing a certain point on the observation road in a period of 20 seconds. It is required to determine the density of traffic of roadway with the given spot speeds Vehicle Time of passing spot speed 34.2kph 1.62 sec 2 6.16 42.4 8.60 46.3 4 13.07 41.1 15.77 43.4
Transportation Engineering
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 highway
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6. There are 5 vehicles passing through an intersection of two highway in a period of 20 seconds. Vehicle Spot speeds, kph 1 34.20 42.40 46.30 41.10 4 5. 43.40 Compute the space mean speed in kph. 41.05 kph
37. The speed of 5 vehicles were measured (with radar) at the midpoint of a 0.5 km section of the Bataan Provincial Expressway (BPEX). The speeds for vehicles 1, 2, 3, 4, and 5 were 44, 42, 51, 49, and 46 kph, respectively. Assuming all vehicles were traveling at constant speed over the section, calculate the time mean speed. a. 46.17 kph b. 46.40 kph C. 47.32 kph d. 39.76 kph 38. The speeds for vehicles A, B, C, D and E were 50, 54, 56, 58 and 60 kph respectively. Assuming all the vehicles were traveling at constant speed for a distance of 1.5 km, determine the space mean speed. a. 57.55 kph b. 61.32 kph c. 55.38 kph d. 69.50 kph 39. Two cars approaching each other from opposite directions at a speed of 120 kph and 90 kph respectively. Assuming a reaction time of 2 seconds and a coefficient of friction of 0.60 with a brake efficiency of 50%. Compute the minimum sight distance required to avoid a head on collision of the two cars. a. 405.222 m
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A subway train travels between two of its station stops with the acceleration schedule shown. (a) Determine the velocity after 14 sec in m/s. (b) Determine the time interval At, during the train brakes to a stop with a deceleration of 2 m/s? in sec. (c) Determine the distance S between the stations in m. qfm/s?} 8. 10
Observation post reveals that 5 vehicles passed through at intervals of 8 s, 9 s, 10 s, 11 s, and 13 s, respectively. The speeds of the vehicles were 80 kph, 76 kph, 70 kph, 80 kph, and 50 kph, respectively. Compute the time mean speed. 71.2 kph b. Compute the space mean speed if the distance traveled by the vehicles is 250 m. 88.24kph If the density of traffic is 20 vpk, compute the rate of flow of traffic in vph. 1765vph 5. a. c.
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PROBLEM 6: Four vehicles passing through the SLEX has the following observation. Determine the time mean speed. Vehicles Time of passing (sec) | Spot speed (kph) 1 1.5 55.4 2 6.0 56.8 3 8.0 53.6 4 12.00 48.9