Question 1a) The spot speeds and headways of vehicles are measured by two loop detectorson a single lane at location Y on a freeway. A sample of the observations is givenbelow:Vehicle no.ii.12345Travel timebetween loops(seconds)0.900.810.920.751.03nex nyt qHeadwaybetween vehicles(seconds)3.603.144.003.503.729 = = =/=/30S=i. If the loop detectors are spaced 20 meters apart, estimate the space meanspeed and flow of the traffic stream.If it is known that the jam density (k;) on this section is 105 vehicles/km perlane, and that a linear speed-density relationship holds, what would youestimate the free-flow speed of the section to be?-110Ehin

Given, Spacing of loop detector = 20 m Time vs headway data

Question 1 a) The spot speeds and headways of vehicles are measured by two loop detectors on a single lane at location Y on a freeway. A sample of the observations is given below: Headway q 7/4 i. ii. Vehicle no. 1 2 3 4 5 Travel time between loops (seconds) 0.90 0.81 0.92 0.75 1.03 between vehicles (seconds) 3.60 3.14 4.00 3.50 3.72 q= S= If the loop detectors are spaced 20 meters apart, estimate the space mean speed and flow of the traffic stream. If it is known that the jam density (k) on this section is 105 vehicles/km per lane, and that a linear speed-density relationship holds, what would you estimate the free-flow speed of the section to be?

Question 1 a) The spot speeds and headways of vehicles are measured by two loop detectors on a single lane at location Y on a freeway. A sample of the observations is given below: Headway q 7/4 i. ii. Vehicle no. 1 2 3 4 5 Travel time between loops (seconds) 0.90 0.81 0.92 0.75 1.03 between vehicles (seconds) 3.60 3.14 4.00 3.50 3.72 q= S= If the loop detectors are spaced 20 meters apart, estimate the space mean speed and flow of the traffic stream. If it is known that the jam density (k) on this section is 105 vehicles/km per lane, and that a linear speed-density relationship holds, what would you estimate the free-flow speed of the section to be?

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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