Question-An isolated three-phase traffic signal is designed by webster's method. The critical flow ratio for three phases is 0.2, 0.3 and 0.25 respectively and lost time per phase is 4 second. Find the optimum cycle length (in sec.).

Question-An isolated three-phase traffic signal is designed by webster's method. The critical flow ratio for three phases is 0.2, 0.3 and 0.25 respectively and lost time per phase is 4 second. Find the optimum cycle length (in sec.).

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: Q2: At grade intersection with width 15 m, controlled by 3 phases traffic signals. A percentile…

A: Given: 3‐phase traffic v=18 m/s lost time per phase=4 sec phase efficiency=0.65 percentage…

Q: During one hour, 1800 pedestrians passed by the observation point on the pedestrian walkway. The…

A: This question is related to the Highway Engineering from Civil Engineering. Given - Number of…

Q: 2. An intersection has a 2-timing stage signal with the movements allowed in each timing stage,…

A: A intersection of 2-timing stage signal is given Lost time = 3 seconds v/c ratio = 0.85 Total lost…

Q: An isolated three-phase traffic signal is designed by Webster's method. The critical flow ratios…

Q: A simple four legs intersection needs a fixed time signal and the traffic flow condition is shown as…

A: For a simple four legs intersectionthe lost time per phase is 4.2 secondsTo determine (a) the…

Q: A signalized intersection operates in two phases. The lost time is 3 seconds per phase. The maximum…

A: 2-phase road i.e. n = 2Lost time per phase = 3 secMaximum ratios of approach flow to saturationflow…

Q: Question- A signalized intersection operates in two phases. The lost time is 3 seconds per phases.…

A: Given data- Two phase signal system⇒n=2Lost timet=3 s/phaseThe maximum ratios of approach flow to…

Q: An intersection has a three-phase signal with the movements allowed in each phase and corresponding…

Q: SOLVE ASAP AND SHOW A FULL SOLUTION

A: Step 1:Step 2:Step 3:Step 4:

Q: On a city street, a transit line operates through signalised intersections. Each transit has three…

A: Number of compartment, Number of passengers, Green to cycle ratio, Reduction factor, Clearnace time,…

Q: An isolated three-phase traffic signal is designed by Webster's method. The critical flow ratios for…

A: Three phase traffic signal Critical flow ratio y1 = 0.2 y2 = 0.3 y3 = 0.25 Lost time per phase =…

Q: A turning movement count and a saturation flow study were conducted at a major intersection on an…

A: 1. Yellow light = 3 secsred light = 2 secsIntergreen period = 3 + 2 = 5 secs.Let lost time per phase…

Q: The difference between the actual travel time and the travel time that will be obtained by assuming…

Q: Q2- The table below lists the needed data for designing a traffic signal for a 3-leg signalized…

Q: Select the true items related to traffic signal design. Select only the four correct answers.…

A: From the given question it is required to select the true items related to traffic signal design.

Q: A turning movement count and a saturation flow study were conducted at a major intersection on an…

A: Hi! Thank you for the question As per the honor code, We’ll answer the first question since the…

Q: SHOW A FULL SOLUTIONA traffic signal operating at an intersection inside a mall with effective green…

A: To address the given problem, we need to apply the fundamental principles of traffic flow theory.…

Q: Question-An isolated three-phase traffic signal is designed by webster's method. The critical flow…

Q: نقطة واحدة Interrupted and uninterrupted flow is a measure of the quality of .traffic flow True O…

Q: An intersection has a three-phase signal with the movements allowed in each phase and corresponding…

Q: 5. Design signal for the intersection shown in Figure 1. Assume no pedestrian activity. Assume amber…

Q: Question - In a one-lane one-way homogeneous traffic stream, the observed average headway is 3.0s.…

A: Given data- One-lane one-way homogeneous traffic stream, The observed average headway = 3.0 s, To…

Q: The average normal flow cn cross roeds A und B during design pericd are 400 and 250 pcu per hour.…

Q: Question-An isolated three-phase traffic signal is designed by webster's method. The critical flow…

Q: Operational delay is the part of delay caused by the impedance of other traffic. * False O True For…

A: Delay is the extra time spent by the drivers against their expection. There are various types of…

Q: SHOW FULL SOLUTION

A: Given data are- Movements and their approaches: North, South, East, West.Directions: Through +…

Q: Question-An isolated three-phase traffic signal is designed by webster's method. The critical flow…

A: To determine the optimum cycle length. Where, Lost time per phase = 4 sec Critical flow ratio =…

Q: dz with equal effective green % left tuming =30. show the following for one of the approaches: A…

A: Given:- cycle time=114sec % left turning =30 width of approach=12m %left turning=30 To find:- a)…

Q: A freeway traffic stream was observed to have a density of 22.0 veh/mi/ln when the mean speed was…

A: The objective of the question is to calculate the flow rate of traffic at a given mean speed and…

Q: Two detectors are placed 235 feet apart on the Taconic State Parkway, A vehicle activates the first…

A: The distance between two detectors and time taken between detectors have been given and it has been…

Q: A turning movement count and a saturation flow study were conducted at a major intersection on an…

A: Yellow light = 3 secs red light = 2 secs Intergreen period = 3 + 2 = 5 secs. Let lost time per phase…

Q: In a three-phase signal system design for a four-leg intersection, the critical flow ration for each…

Q: An isolated three-phase traffic signal is designed by Webster's method. The critical flow ratios for…

Q: Question-An isolated three-phase traffic signal is designed by webster's method. The critical flow…

A: Given- Isolated three-phase traffic signal. critical flow ratios- y1=0.2,y2=0.3,y3=0.25. Lost time…

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

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 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

Solve and give Correct answer.
QUESTION 1 During one hour, 1800 pedestrians passed by the observation point on the pedestrian walkway. The flow appeared to be relatively consistent over the hour (i.e. PHF=0.90) without distinct platoons. The effective walkway width was 5 f t. Pedestrian were moving at roughly 4.25 ft/sec. Based on the observed average spacing (ft²/ped) determine the pedestrian LOS. A B E OF
The average normal flow on cross roads A and B during design period are 400 and 250 pcu per hour. The saturations flow values on these roads are estimated as 1200 and 1000 pcu per hour respectively. The all-red time required for pedestrian crossing is 12secs. Calculate cycle time for two phase signal system.
Read the question carefully and give me right solution with clear calculations.
Q2: What are the assumptions for using the equations in the queue test? Q3: A signalized intersection, of 105 sec cycle length, the east approach has an effective green time of 20 sec, and the percentage of vehicles arriving during green time is 28%. The west approach has 16 sec green time and 32% of vehicles arriving during the green time. Determine which approach is best coordinated with the upstream signal.
A turning movement count and a saturation flow study were conducted at a major intersection on an expressway with configuration as presented in Fig.1. The peak-hour volumes and saturation flows obtained from the studies for each movement are presented in Tables 1 and 2, respectively. i) provide a diagrammatic representation of the signal sequence at the intersection. Assume a yellow interval of 3s, all-red interval of 2s and a peak hour factor of 0.95 for all the approaches. Note: No two movements should conflict during the determination of the phasing plan.
Determine the maximum sum of critical volumes that a signalized intersection, with four phases and a cycle length of 120 seconds, can accommodate. Assume that the lost time per phase is equal to 3.5 seconds, and that the saturation discharge headway is equal to 1.9 seconds. Ans: 1,673 veh/hr
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 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. Assume the lost time is 4 seconds per phase and a critical intersection v/c of 0.90 is desired. O 15.552 sec O 11.462 sec O 14.825 sec Phase O 16.065 sec Allowed movements Analysis flow rate Saturation flow rate Using v/c equalization ratio, calculate the effective green time for phase 3 1 NB L, SB L 330, 365 veh/h 1700, 1750 veh/h 2 NB T/R, SB T/R 1125, 1075 veh/h 3400, 3300 veh/h EB L, WB L 110, 80 veh/h 650, 600 veh/h 3 EB T/R, WB T/R 250, 285 veh/h 1750, 1800 veh/h
Question- A signalized intersection operates in two phases. The lost time is 3 seconds per phases. The maximum ratios of approach flow to saturation flow for the two phases are 0.37 and 0.40. The optimum cycle length using the Webster's method (in seconds, round off to one decimal place) is...