Design signal timing for an intersection with the following details. Assume a total loss time of 3 seconds per phase. Width of lanes are 12 ft each. Assume that there are 20 pedestrians crossing each of the approaches per cycle. Check the signals for pedestrian crossing time. Take pedestrian walking speed as 4 ft/s. Saturation flow rates are: Left-turning: 1600 veh/hr/In, Through: 1800 veh/hr/In, and Right- turning: 1700 veh/hr/In

Design signal timing for an intersection with the following details. Assume a total loss time of 3 seconds per phase. Width of lanes are 12 ft each. Assume that there are 20 pedestrians crossing each of the approaches per cycle. Check the signals for pedestrian crossing time. Take pedestrian walking speed as 4 ft/s. Saturation flow rates are: Left-turning: 1600 veh/hr/In, Through: 1800 veh/hr/In, and Right- turning: 1700 veh/hr/In

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: Determine minimum cycle length and LOS of North bound approach for che intersection shown below.…

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

Q: Green terminates at a signalized intersection with 6 vehicles queued fo The arrival rate for the…

A: Given data Arrival rate 1 veh/sec Departure rate 2 veh/sec Cycle length 100sec Green time 50sec

Q: A pretimed four-timing-stage signal has critical lane group flow rates for the first three timing…

A: Given data: Flow rates of first three timing stages: q1=274 veh/hrq2=114 veh/hrq3=271 veh/hr…

Q: On a two-lane signalized intersection approach that has a peak 15-minute arrival rate of 900 vph, a…

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

Q: For a given one-lane approach of a signalized intersection, the base free flow speed is 40 mph, flow…

Q: 1. An isolated intersection is controlled by a two-phase pre-timed signal with the movements allowed…

Q: a) Estimate the average uniform delay for this approach

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

A: Given Data: The number of phases is 3. The lost time per second is 4 seconds. The v/c ratio for the…

Q: approach signal is divided into r = 74 seconds of effective red, followed by g = 16 seco ve green.…

A: given, cycle time, C = 90 sec effective red time, r = 74 sec effective green time = 16 sec rate of…

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

5. Design signal timing for an intersection with the following details. Assume a total loss
time of 3 seconds per phase. Width of lanes are 12 ft each. Assume that there are 20
pedestrians crossing each of the approaches per cycle. Check the signals for pedestrian
crossing time. Take pedestrian walking speed as 4 ft/s.
Saturation flow rates are: Left-turning: 1600 veh/hr/ln, Through: 1800 veh/hr/In, and Right-
turning: 1700 veh/hr/In
A
488
488
115
1051
217
N
338
-338
(В
Phase I
Phase II
Phase III
J!!!
J↓↓
Yr

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 Saturation flow rate

VIEW

Step 3: Pedestrian crossing time

VIEW

Step 4: Calculation of green time:

VIEW

Step 5: Check the signals for pedestrian crossing time

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 6 steps

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

An approach at a signalized intersection with a 60-second cycle gets 30 seconds of displayed green time. Yellow time is 4 seconds and all-red is 2 seconds (lost time is to be determined from standard assumptions). At the beginning of an effective red there are 4 vehicles in the queue and the saturation flow is 876 veh/h. The arrival rate is given by v(t) = 0.20 - 0.002t [with v(t) in veh/s and t in seconds after the beginning of the effective red]. What is the average vehicle delay for this approach in seconds at the end of the cycle (until the next effective red) that started with the 4 vehicles queued at the beginning of the effective red? (Assume D/D/1 queueing. Please provide you answer in decimal form without units)
An approach to a pre-timed signal has 40 sec of effective green in a 75-second cycle.The approach volume is 700 veh/h and the saturation flow rate is 1600 veh/h.Calculate the time to queue clearance after the start of the effective green, themaximum number of vehicles in the queue, the total vehicle delay per cycle andthe average delay per vehicle assuming D/D/1 queuing.
A two-phase signalized intersection is designed with a cycle time of 100 s. The amber and red times for each phase are 4 s and 50 s, respectively. If the total lost time per phase due to start-up and clearance is 2 s, the effective green time of each phase is s. (in integer)
7.12 The saturation flow rate of an approach to a pretimed signal is 6000 veh/h. The signal has a 60-second cycle with 20 seconds of effective red allocated to the approach. At the beginning of an effective red (with no vehicles remaining in the queue from a previous cycle), vehicles start arriving at a rate v(t) = 0.4 +0.01t + 0.00057+² (where v(t)) is in vehicles per second and t is the number of seconds from the beginning of the cycle). 30 seconds into the cycle the arrival rate remains constant at its 30-second level and stays at that rate until the end of the cycle. What is the total vehicle delay over the cycle (in vehicle- seconds), assuming D/D/1 queuing?
Determine whether a T intersection (one leg on the minor approach) with the hourly volume data satisfy MUTCD Warrant 3 (peak-hr vehicular volume) for signalization. All approaches have one lane entering the intersection. For the warrant that is met, explain how the warrant is met (rules applied, hours in which the volume criteria were met, etc.) and refer to necessary graphs and tables. The major street speed limit is 60 km/h, and the minor street speed limit is 40 km/h.
(b) An approach to a pretimed signal has 25 seconds of effective green in a 60-second cycle. The approach volume is 500 vph and the saturation flow rate is 1400 vph. Calculate the average vehicle delay assuming D/D/1 queuing.
Please show all of your work