Calculate speed of the shockwave foamed by the bottleneck

Assignment Help Civil Engineering
Reference no: EM13323759

On the two lane carriageways, roadworks restrict the width of both traffic lanes, generating a bottleneck to the traffic flow. The maximum flow per lane on the unobstructed carriageway is 2100 vehicles per hour whilst on the section under repairing the maximum flow per lane reduces to 1200 vehicles per hour. When stationary, vehicles are spaced at average distance headway of 6 m. It may be assumed that there is a linear relationship between speed and density. When the traffic flow approaching the roadworks is 3500 vehicles per hour, calculate:

1the speed of the traffic system a considerable distance in advance of the bottleneck;

2the speed of the traffic stream immediately before the commencement of the bottleneck; and

3the speed of the shockwave foamed by the bottleneck.

Reference no: EM13323759

Questions Cloud

Find the point where the normal reaction n acts on the block : a block of mass m is on an inclined plane that makes angle from the horizontal plane. the coefficient of friction between the plane and the block is µ. find the point where the normal reaction N acts on the block.
How does the natural rate of unemployment change as the : How does the natural rate of unemployment change as the demographic composition of the population changes?
Case study on quality and operations management systems : CASE STUDY ON Quality and Operations Management Systems
Evaluate the ph of a solution prepared by mixing : Calculate the pH of a solution prepared by mixing 20.5 mL of a .5 M sodium flouride solution with 32.5 mL of a .750 M hydrofluoric acid solution
Calculate speed of the shockwave foamed by the bottleneck : When stationary, vehicles are spaced at average distance headway of 6 m. It may be assumed that there is a linear relationship between speed and density. When the traffic flow approaching the roadworks is 3500 vehicles per hour
What is the effect of unemployment insurance on the natural : What is the effect of unemployment insurance on the natural rate of unemployment?
What is the natural rate of unemployment : Which has more impact: a doubling of the jobfinding rate or a halving of the job-separation rate? Does your result have any implications for government policy?
The sodium flouride solution and hydrofluoric acid solution : During an experiment, a student mixed 14.5 mL of a .5 M sodium flouride solution with 15.6 mL of a .750 M hydrofluoric acid solution. The measured pH was 3.24. Calculate the pKa.
Design a gui program that calculates a car gas millage : Design a GUI program that calculates a car's gas millage. The program's window should have text boxes that let the user enter the number of gallons of gas the car holds, and the number of miles it can be driven on a full tank.

Reviews

Write a Review

Civil Engineering Questions & Answers

  Determine the initial weight and final density of the water

A steel tank hold 120 ft^3 of water at atmospheric pressure(14.7psi and 68.4 degrees f). the water is subjected to a 100 fold increase in pressure. determine the initial weight and final density of the water if the volume decreases by .545 ft ^3.

  What is the easiest way to solve for the 2 unknowns

Are either of the Ax or Jx forces relevant to finding the tension between H and J. If so, what is the easiest way to solve for those 2 unknowns.

  What is the mean momentum flow rate down the pipe

laminar flow of a real fluid down a cylindrical pipe of constant radius R. Poiseuille showed that the velocity profile was parabolic and given by u(r)=c(R^2-r^2), where r is the radial coordinate and c is a dimensional constant.

  Determine the time needed for block a to rise 3 m

The moto draws in the cable at D with a constant acceleration of aD=8 m/s^2. If vD=0 when t=0, determine: a) the time needed for block A to rise 3 m b)the relative velocity of block A with respect to block B when this occurs.

  What is the magnitude of shaft work obtained

If the amount of heat transfer in the HE unit is 2460 kJ per kg of steam, what is the magnitude of shaft work obtained from the turbine in kW?

  Determine the degree of saturation-void ratio and porosity

After drying in the oven, it weighs 4.44 kg. The relative density of the grains is 2.70. Determine the degree of saturation, void ratio, porosity and moisture content of the soil in its natural state.

  Determine the magnitude of the largest elastic load p

the outer diameter of this sleeve is 20 mm, and its inner diameter is 10 mm. if the yield stress for the steel is (sy)st = 640 MPa, and for the bronze (sy)br = 520 MPa determine the magnitude of the largest elastic load P

  Find what is the flow in cfs if the pressure at 3 diameter

Oil (specific gravity 0.752) flows through a 6" horizontal pipe under a pressure of 60 psi. Assuming no losses, what is the flow in cfs if the pressure at a 3" diameter reduction is 20 psi

  Find out the magnitude of the contraction scour

Bridge scour, Determine the magnitude of the contraction scour depth given the following information about the channel and bridge

  How to design a cyclone that has a collection efficiency

Design a cyclone that has a collection efficiency between 80% and 85% (use parcticle size distribution given below). you must assume a dpc of 4.2 microns,an inlet gas velocity of 25 m/s and a K of 15.

  Calculate amount of suspended solids accumulating each day

A sedimentation basin is used to remove suspended solids from a wastewater. The rate of flow of wastewater into the tank is 10 L/s, and the influent concentration of suspended solids is 200 mg/L.

  Which will cause reaction at the bearing to be equal to zero

Determine the magnitude of which will cause the reaction at the bearing to be equal to zero. The bearings are in proper alignment and exert only force reactions on the rod. Set = 600 .

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd