A signalized intersection operates in two phases. The Lost time is 3 seconds per phase. The maximum ratios of approach flow to saturation flow for the two phases are 0.37 and 0.40. The optimum cycle length using Webster's method (in seconds, round off to one decimal place) is

A signalized intersection operates in two phases. The Lost time is 3 seconds per phase. The maximum ratios of approach flow to saturation flow for the two phases are 0.37 and 0.40. The optimum cycle length using Webster's method (in seconds, round off to one decimal place) is

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter8: Intersection Control

Section: Chapter Questions

Problem 24P

See similar textbooks

Related questions

Q: A column is supported on a footing as shown in the figure below. The water table is at a depth of 10…

A: Given- Water table at a depth of 10 m, Size of footing- 1.5 m × 3 m, Depth of footing Df=1 m, Unit…

Q: Workout and sketch the bending moment diagram in the following case shown in figure below. (1) 10…

Q: Experimental data for clay specimen obtained initial values of e1 = 1.12 and P1 = 90 kPa, and final…

Q: 3. For the given structure and boundary conditions, what is the allowable load Pallow if the…

Q: For the beam shown in Fig.Q4, use the principle of virtual work to determine (1) the vertical…

Q: he Water District plans to cross two parallel pipes along both sides of the bridge to augment the…

A: Step 1: Calculate the Total Head Loss in Meter Total head loss = (200 mm pipe head loss + 250 mm…

Q: Find the difference in level between two points A and B in a reciprocal levelling with the following…

Q: 2. Compute the deflection at midspan of the beam shown. Given: I = roller. 46 x 106 mm, E = 200 GPa.…

A: Answer We can use conjugate beam method to calculate the deflection at midspan for given beam. Let…

Q: Problem Solving. 1. The maximum bending moment for a 4 meters freely supported beam has been found…

Q: Indicate symbols and patterns used in Staad.Pro. You can indicate as many as you can.

A: Refer to the following pictures

Q: 1 2 3 4 21 5 2 Lo 6 Determine the type of load/s applied at each of the labeled points. (1) (2) (3)…

Q: Q2 for the ystem showing complute The Q3 qixah deformation at A, B HA=160mm ² E=2006 5KN/m + 3m orbm…

Q: What is the value of specific gravity of water?

Q: Question 3 For an unsaturated soil with specific gravity G₁ = 2.74, moist unit weight, y = 20.6…

A: To determine Degree of saturation Weight of water per unit volume for saturation of 100% Weight of…

Q: Direction: Solve the following situation in neat and orderly manner. Situation 1. Figure 1-1 Specify…

Q: Determine the forces in members BE and CE of the loaded truss. The forces are positive if in…

Q: Use the graphical method to construct the shear-force and bending-moment diagrams for the beam…

A: To determine Shear force diagram Bending moment diagram Maximum moment

Q: Experimental data for clay specimen obtained initial values of e1 = 1.12 and P1 = 90 kPa, and final…

A: Given data in question Initial value of void ratio and pressure 1.12 & 90 kPa Final value of…

Q: Q.2) A cantilever reinforced concrete beam has a cross-section as shown in the Figure below Using…

A: Answer To calculate the maximum load (PLI.max) using working stress method we need to calculate the…

Q: The isosceles right angled triangular truss ABC is held in place by the structure shown in Figure 3.…

A: Force in member AC Force in member CE

Q: A 15 cm vertical soil sample is taken and placed in constant head permeameter. The surface area of…

A: Given Length of sample (L)=15 cm Area of cross section of sample (A)= 20 cm2 Head loss (H)=( h1-h2…

Q: A pool in the shape of a cylinder with a height of 6 m and a base radius of 7 m is drained for…

Q: Start with Navier-Stokes equations and determine the velocity at the point x = 9.5 cm and y= 0.28…

A: Couette flow is a type of flow in which the viscous fluid flows between two parallel plates. One of…

Q: 3. A W420 x 85 steel beam is fully restrained (both ends are fixed support) with a uniformly…

A: The following is the given information. w = 25 kN/m P = 10 kN L = 10 m Properties of W420 x 85 A =…

Q: In a triaxial unconsolidated undrained (UU) test on a saturated clay sample, the cell pressure was…

A: Given that :- In a triaxial unconsolidated undrained (UU) test Cell pressure = σ3 = 100 kPa…

Q: PROBLEM SOLVING: (BOX YOUR FINAL ANSWER) A square plate having one of its side equal to 3.X meters…

Q: V. Acable-supported roof carries a uniform load w = 0.6 kip/ft. If the cable sag at midspan is set…

Q: No.1 Find all the support reactions for the beam shown in the figure. Assume EI is constant. Use (a)…

A: NOTE : Since you have asked multiple methods, we will solve the first method for you. If you want…

Q: Question A sample of dry sand was tested in direct shear test apparatus under a normal load of 72…

A: Given- Dry sand, cohesion C=0, Normal load = 72 kg, Shear load = 36 kg, It is needed to find the…

Q: Consider a precast concrete pile that is 0.505 m X 0.505 m in cross section driven in a homogeneous…

A: The following are the given information, Pile Cross section = 0.505 m x 0.505 m Homogeneous sand…

Q: Determine the deadweight of a 1-ft-long segment of the ermin prestressed, reinforced concrete…

A: Given data - Density of Concrete = 120 lbs/ft3 length of beam = 1 feet Find - Deadweight of…

Q: =Draw the shear and moment diagrams for each member of the frame. Assume the support at A is a…

A: Given:- To find:- Shear force and bending moment diagram Concept:- Shear force diagram:- Shear…

Q: A farmer collected a soil sample from his 4-hectare cornfield with root zone depth of 75 cm. The…

A: ###Determination of Following Results from test sample collected from farm ###

Q: 3. Using double integration method (DIM), determine the slope and deflection at point C. consider El…

Q: Use Area Method. The beam subjected to loading as shown is pinned at D, has roller supports at A and…

Q: Determine the forces in members BE and CE of the loaded truss. The forces are positive if in…

Q: 1 Draw the influence lines for the reaction (Ay) and shear at internal hinge at C (Vc), use Equation…

A: Given To draw The influence line for reaction Ay The influence line for shear at internal hinge at…

Q: Homework: if the water content of a certain saturated soil is 22% and the specific gravity is 2.65%…

Q: Use Area Method. The beam subjected to loading as shown is pinned at D, has roller supports at A and…

A: Data given Find : Shear and moment diagram using Area method

Q: In a standard California bearing ratio test (sample height is 125 mm), the difference between the…

A: Given- Sample height h=125 mm, Change in sample height = 0.125 mm, It is needed to find the…

Q: Pb-4, A point load of 700 kN is applied on the surface of thick layer of saturated clay. Using the…

Q: B K 60 kips ↓ C H 4 @ 20' 80' = L G 10000 D F T 15' 15' E

Q: Classify the structures in following figures. Indicate if stable or unstable. If unstable, indicate…

A: Given Data Classify the structure whether it is stable or unstable and determinate or…

Q: Please provide proper illustration and solution

Q: Pitot Tube Question 3: A pitot-static tube is used to measure the velocity of water in a pipe. The…

A: Given- Stagnation pressure head hs=6 m, Static pressure head hst=5 m, Coefficient of tube Cv=0.98,…

Q: 3. Determine the axial compressive strength based on the limit states of flexural buckling using…

Q: Determine the force in each member of the loaded truss. The forces are positive if in tension,…

Q: A square raft foundation 4 m by 4 m is placed at a depth of 2.0 m below ground level is to carry a…

A: The given data is as follows: Size of square foundation=4 m×4 mDepth=2.0 mGross loading…

Q: 1. A long siphon connected at the side near the bottom of the reservoir discharges water through a…

A: KINDLY NOTE: As per our company guidelines, we are required to solve the first question in case…

Q: 1. Beam Diagram 26 by CISC Handbook of Steel Construction. (1) using 4th-order differential equation…

Concept explainers

Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.

Question

100%

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

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

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

A simple four legs intersection needs a fixed time signal and the traffic flow condition is shown as below. Determine (a) the critical flow in N-S and E-W directions. (b) Find out the saturation flow if saturation headway is 1.5s. (c) Determine the cycle length and distribution of green time (suppose the lost time per phase is 4.2 seconds)
TRANSPORTATION ENGINEERING-TRAFFIC SIGNALS" Recent analysis at an approach to pre-time signalized intersection indicate that the volume-to-capacity ratio (v/c) is 0.8, htat saturation flow rate (s) is 1600 vehicles/hour, and the effective green time is 50 seconds. If the average delay, assuming D/D/1 is 11.25 seconds per vehicle, determine the arrival flow rate (vehicles/hour) and the cycle length.
A simple four-legged intersection needs a fixed-time signal. The critical lane flows in the N-S and E-W directions are 950 and 600 veh/hr/ln, respectively. Saturation flow is 1,950 veh/hr/ln and the lost time per phase is 6 seconds. Assume yellow interval is 3 seconds and all red interval is 2 seconds. Determine the cycle length and the distribution of green using Webster’s method.
The minimum cycle length for an intersection is determined to be 95 seconds. The cirtical lane group flow ratios were calculated as 0.235, 0.250, 0.170 and 0.125 for phases 1- 4 respectively. What Xc was used in the determination of this cycle length, assuming a lost time of 5 seconds per phase?
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. (1) Calculate the sum of the flow ratios for the critical lane groups. (2) calculate the minimum cycle length and the effective green time for each phase (balancing v/c for the critical lane groups). Assume the lost time is 4 seconds per phase and a critical intersection v/c of 0.90 is desired.
Quest... In a three-phase signal system design for a four- leg intersection, the critical flow ratios for each phase are 0.18, 0.32, and 0.22. The total loss time in each of the phases is 2 s. As per Webster's formula, find the optimal cycle length.
The minimum cycle length for an intersection is determined to be 95 seconds. The critical lane group flow ratios were calculated as 0.235, 0.250, 0.170, and 0.125 for phases 1–4, respectively. What Xc was used in the determination of this cycle length, assuming a lost time of 5 seconds per phase?
TRANSPORTATION ENGINNERING-TRAFFIC SIGNALS An approach to a predetermined signal has 25 seconds of effective green for a 60 second cycle. The approach volume is 500 vehicles/hour and the saturation flow rate is 1400 vehicles/hour. Calculate the average vehicle delay using D/D/1 queing.
The following calculations are taken at the approach of an intersection during the morning rush hour. Determine (a) the hourly volume, (b) the peak flow rate in one hour, and (c) the peak hour factor.
Subject: transportation engineering Read the question carefully and give me right solution according to the question. A signal has four phases, where the critical lane group flow ratios are 0.115, 0.204, 0.099, and 0.248. If the lost time per phase is 6 seconds and the critical intersection v/c ratio is 0.88, calculate the minimum cycle length and the phase effective green times such that the lane group v/c ratios are equal.
An approach to a pretimed signal has 25 seconds of effective green. The approach volume is 500 veh/h and the saturation flow rate is 1400 veh/h. If the average vehicle delay is 20 seconds assuming D/D/1 queuing, determine the cycle length (in seconds)_____.
For a given one-lane approach of a signalized intersection, the base free flow speed is 40 mph, flow rate is 450 vphpl, saturation flow rate is 1,800 vphgpl, cycle length and red interval are 90 seconds and 30 seconds. Compute the following: The total time duration from the first vehicle in queue to the last queued vehicle being discharged per cycle The longest queue length and total number of vehicles in queue per cycle; Total vehicle-hours of delay and average delay per vehicle per cycle.