Answered: Using Greenshields' model, for a…

Using Greenshields' model, for a highway with a mean free flow speed of 76 mi/h and jam density of 128 veh/mi, determine the density (in veh/mi) when the mean speed is observed to be 58 mi/h:

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter6: Fundamental Principles Of Traffic Flow

Section: Chapter Questions

Problem 7P

See similar textbooks

Related questions

Q: A 5-storey building is used as an office floor for the ground, second and third levels and a private…

A: KLL = 4 The live load on the office floor system is 50 psf = 2.4 kN/m2Tributary area:Influence…

Q: Station Cut End Area (ft²) 10+00 234 11+00 369 12+00 441 13+00 408 14+00 271 15+00 108 Part A For…

Q: The focal length of a telescope is found to be 0.25 m and the stadia interval of the tacheometer is…

Q: SOLVE STEP BY STEP IN DIGITAL FORMAT 2. CALCULATE THE FORCES IN ALL THE MEMBERS OF THE…

A: To find the forces in all the membersThe joints are named as shown below.

Q: 1- The cross section whose dimensions are given in the figure on the side; a) Find the coordinates…

Q: vs a collapsed building that occurred in China. It seems the due to foundation failure. Based on…

A: First of all you need to know the basic definition of foundation . Foundation is the lowest part of…

Q: In a two-dimensional flow, with its stream function = 2xy, the velocity at a point (5,6) is

Q: level multilane highway with 2 lanes in one direction carries 1,201 vehicles in the peak hour with…

A: No of lanes= 2Total volume in one hour = 1201maximum flow in 15 minutes = 509heavy vehicle= 4%To…

Q: For a pipe that has a length 3,925 in feet, diameter 11 in inches, and flowrate 10 in ft³/s. The…

A: Length of pipe, Diameter of pipe, Flow rate, Roughness coefficient, To find: The head loss due to…

Q: SITUATION: A two span beam is loaded as shown in the figure. El is constant. Construct the moment…

A: Diagram;As, we calculated;1) Compute for the fixed end moment just to the left of span ABThe fixed…

Q: A 15m wide and 15m high 30m long underground storage facility is excavated in a massive limestone…

A: The excavation's long axis orientation: N50°W. This means that the excavation's long axis is…

Q: If the Reduced Level (R.L.) of BenchMark (B.M.) is 100.00 m, the back sight is 1.215 m and the…

A: RL of benchmark = 100 mBack sight = 1.215 mForesight = 1.870 mTo Find :RL of forward station :

Q: Over a great circle route between an earthquake epicentre off the coast of Chile and Hawaii the…

A: To calculate the tsunami travel time, we need to find the phase speed of the tsunami. The phase…

Q: Draw the shear force and bending moment diagram of the beam. Draw the distribution of normal stress…

A: To draw the Shear and Normal Stress distribution for T section.q=12t/m, b=85mm, h= 750mm, t=30mm B =…

Q: ● Add the following angles: 25°54'13" + 100°05'25" 225°54'28" + 67°30'55" • Subtract the following…

Q: Find the different between trapezium rule and Simpson’s rule and which is better?

A: The trapezium rule and Simpson's rule are both numerical integration methods used to approximate the…

Q: 3) Determine the force in member A 10 ft. И И 10 ft. 17 ft. Member A 8 ft.5 ft.-- 10 ft. 1000 lbs.

A: Given:Required :Force in member A

Q: The pin-connected structure consists of a rigid bar ABCD and two axial members. Bar (1) is bronze [E…

A: Cross sectional area of bar A1 = 530 mm2 A2 = 330 mm2 Modulus of Elasticity E1 = 109 GPaE2 = 64 GPa…

Q: Using the conjugate-beam method, determine the displacement at D and the slope at D. Assume A is…

Q: 5. A saturated soil has the following characteristics: initial volume (V) = 19.65 cm³, final volume…

Q: (1) a L₁ B P b C L2 C D

Q: 2. Cantilever Method: The frame shown is subjected to lateral loads as shown. Supports S, T, U V, W…

A: A frame subjected to lateral loads as shown is given below-SN=34X = a1x1…

Q: 50 mm, 50 mm 50 mm V B D 150 mm 50 mm 150 mm 50 mm

A: A cross-section made up of wood is given.With 3 sections joined with glue.The maximum allowable…

Q: The water supply system of a subdivision is provided with an elevated spherical tank with a…

Q: The top chord of a bridge truss has an actual length of 5.0 m and cross-section as shown in Fig.…

Q: Determine the hydrostatic force on 2m wide rectangular panel AB and locate its center of pressure…

A: Hydrostatic force on rectangular panel AB = pressure on panel AB * Area of panel ABPressure on panel…

Q: FOR A GIVEN SOIL SAMPLE, THE FOLLOWING ARE KNOWN. ES=2-74, MOIST UNIT WEIGHT = 20 6 kN/m², AND…

Q: Q-A circular column has to be designed using lateral ties to carry an axial load of 1500kN. Using…

A: A circular column to be designed using lateral ties-Axial load P=1500 kN,M 25 mix & Fe 415 grade…

Q: solve step by step in digital format Solve the following exercises by the conjugate beam method A…

A: A cantilever beam is given with UVL load zero at free end and 6k/ft at the fixed end.The span of the…

Q: PROBLEM 1: A simple curve with tangent lines each 140 meters long is laid out to form the centerline…

A: The length of the tangent is .The bearing of the lines are and .To find:a. Radius of curveb. Degree…

Q: Your assignment in the module „Work Methodology" is closely linked to „Main Project I“, the project…

A: Here's a step-by-step guide to creating and executing the intervention:Step 1: Define the Objectives…

Q: Given: A certain gas weighs 16.0 N/m³ at a certain temperature and pressure. What are the values of…

Q: The mass of the suspended object is m = 50 kg. Determine the reactions on member ABC. 0.2 m 0.6 m…

Q: A rectangular open channel carries a discharge of 15 m³/s when the depth of flow is 1.5 m and the…

Q: 1) The moments of inertia Ix, Iy, Imax, Imin of the area shown in the figure are computed with…

A: To determine the polar moment of inertia, Io

Q: 3. The figure shown is a frustum of a cone with an orifice in the bottom of 0.20 m². If the water…

Q: A pipe, 40 m long, is connected to a water tank at one end and flows freely in atmosphere at the…

Q: Hand written, answers only. For this one compute support reactions and draw the shear and moment…

A: A propped cantilever beam is given with a fixed end at A and propped end at B, with the distance…

Q: What is the Boussinesq's vertical stress at a point 6 m directly below a concentrated load of 2000…

Q: A line source of strength 15 m/s is situated within a uniform stream flowing at -12 m/s (i.e. right…

Q: B) Check the adequacy of the footing for Beam Shear considering 1m strip

A: The thickness of the concrete wall, T = 200 mm.The wall load is DL=175 kN/m.The live load is DL=89…

Q: a sustainable office of the mines and geo-sciences bureau two elevation(front/right side)

A: Front Elevation:The front elevation of the sustainable office for the Mines and Geo-Sciences Bureau…

Q: rectangular plate 2m wide is submerged in water vertically such that its top & bottom surface are 2m…

A: Width of rectangular plate = 2 mTop water surface = 2 mBottom water surface =5 mThe total force on…

Q: Hinge (h) Hinge

Q: A tension plate shown below is used to support suspended load "T". Gusset Plate- Fy = 248 MPa Fu =…

A: Given;

Q: 1.) DERIVED THE FORMULA OF THE VOID RATIO, 2) DERIVED THE FORMULA OF POROSITY, n = V/v = W - W

Q: Problem A frame is subjected to horizontal forces, P2= 1AB KN @ 2ND Floor Level and P1= 2CD KN @ 1st…

A: Since there are two methods different are given as per the policy the first method will be solved.…

Q: Problem 1 A 300 mm x 400 mm column is to be supported by a 2 m x 2 m x 0.4 m thick footing @ its…

A: Column 300 mm x 400 mmfooting 2 m x 2 m x 0.4 mDead Load, DL = 520 kNLive Load, LL = 320 kNCentroid…

Q: Q5. Given the following information: A concrete pavement for two lane highway has doweled joints and…

A: Given;Modulus of subgrade reaction = 200 pci = (54.2 MN/m3)Modulus of rupture = 650 pci = (4.5…

Q: A trapezoidal channel having a bottom width of 6.1 m and side slopes of 1.5H : 1 V is carrying a…

A: trapezoidal channel bottom width = 6.1 mside slopes = 1.5H : 1 Vflow, Q = 126 m3/sdepth = 5.79…

Concept explainers

Capacity and Level of Service at Intersections

The term capacity is associated with transportation engineering. Capacity helps to understand how many pedestrians or vehicles can be handled by a transport facility. Level of service is also a term associated with transportation engineering. The level of service indicates the performance of the transport facility.

Question

Using Greenshields' model, for a highway with a mean free flow speed of 76 mi/h and jam density of 128 veh/mi, determine the density (in veh/mi) when the mean speed is observed to be 58 mi/h:

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Given data

VIEW

Step 2: Calculate the density

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Capacity and level of service at intersections

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

Given a freeway flow study at a certain highway. The speed- density relationship is described in the givenequation or relationship: V s = 58- 0.40k Determine the following:a. Free-flow speed and jam densityb. Derive the equation describing flow and speed.c. Derive the equation describing flow and density.d. Determine the capacity of highway
On a freeway with a flow of 1600 vehicles per hour and an absolute maximum space mean speed of 110mph, the following point speeds were observed (in mph): 52,48,58,43,58,54,62,51,58,55,59,59,53,50,54. Determine the jam density, in vehicles per mile.
Please show me the process and steps. A) Traffic on a highway is said to follow the Greenshields model with jam density of 196 pc/mi/ln. The measured capacity is 3250 pc/h/ln. What is the free flow speed?
Given a freeway flow study at a certain highway. The speed- density relationship is described in thegiven equation or relationship:V s = 60- 0.48kDetermine the following:a. Free-flow speed and jam densityb. Derive the equation describing flow and speed.c. Derive the equation describing flow and density.d. Determine the capacity of highway
The traffic volume for a section of a highway can be estimated using the following equation: q = 15.1k[ln (195) - In(k)] Where q is the traffic flow measured in veh/hr and k is the traffic density measured in veh/mi. Based on the provided information, estimate the following (Show all your calculation steps): Maximum flow a. b. Jam density C. Maximum density
A section on a highway is known to have a speed at maximum flow to be 30kph and a capacity of 3300veh/hr. In a given hour, 2100 vehicles were counted at a specified point along this highway section. Determine the following using if the relationship of speed and density is logarithmic. Determine the jam density in veh/km.
Topic: Transportation engineering Free-flow speed of a lane of a road is 120 km/h and the jam density is 80 veh/h. Prove that the maximum flow will be 2 400 veh/h
Data obtained from aerial photography showed nine vehicles on a 720 ft-long section of road. Traffic data collected at the same time indicated an average time headway of 4.2 sec. Determine the following. (a) the density on the highway (in veh/mi) veh/mi (b) the flow on the road (in veh/h) veh/h (c) the space mean speed (in mi/h) mi/h
Determine the density of traffic on a highway for free flow speed of 80 km/hr and flow rate of 1200 pc/hr/ln
On a specific westbound section of highway, studies show that the speed-density relationship is: It is known that the capacity is 5200 veh/h and the jam density is 310 veh/mi. What is the a.) space-mean speed of the traffic at capacity, (mph) b.) and what is the free-flow speed? (mph)
The median speed of vehicles on a highway segment during rush hour is 40 mph with Cv of 0.2. Assuming lognormal distribution, find the fraction of time the speed will fall below 10 mph? What about greater than 50 mph?
A section of a highway is known to have a free-flow speed of 65 mi/h and a capacity of 3500veh/h. In a given hour, 2500 vehicles were counted at a specified point along this highway section. If the linear speed-density relationship applies. What would be the jam density (veh/mi)? choices 212.72,210.64,215.38,216.90