Assume the following relationship between flow and speed: q=240*S-3.428*S^2 Find: a) Free flow sp...
Assume the following relationship between flow and speed: q=240*S-3.428*S^2
Find: a) Free flow speed (Sf)
b) Jam density (Dj)
c) D-S relationship
d) q-D relationship
e) Capacity (qmax)
f) Plot three graphs demonstrating q-S, q-D, and D-S relationships
Homework Answers
Add Answer to:
Assume the following relationship between flow and speed: q=240*S-3.428*S^2 Find: a) Free flow sp...
Given a Greenshields linear density speed-relationship, S = 55.0 - 0.45 D. Flow-speed relationship is Flow=1100S-S^2/g...
Given a Greenshields linear density speed-relationship, S = 55.0 - 0.45 D. Flow-speed relationship is Flow=1100S-S^2/g and flow-density relationship is Flow=55D-0.45D^2 1.What are the values for the following: a) free flow speed __________________________ b) jam density ____________________ c) capacity _______________________
Question-4: Speed-flow-density relationships of a particular site has resulted in the model U = 68.3(1-10) Where...
Question-4: Speed-flow-density relationships of a particular site has resulted in the model U = 68.3(1-10) Where U is the speed (mi/hr), and K is the density (veh/hr/lane) Find the following i. Free flow speed and jam density ii. Derive the equation depicting relationship between flow and density Derive the equation depicting relationship between speed and flow iv. Show the values of free-flow speed, jam density and capacity graphically
Problem 2. (15 pts) Find the relationship between speed and density for a highway with a...
Problem 2. (15 pts) Find the relationship between speed and density for a highway with a jam density between 17:5 and 260 pm and a free flow speed of 50 and 65 mph (by increment of 5 mph). (Please refer to Problem 3 for a solution approach to this problem.) Determine the two concentrations achieved at flow value of 1,700 vph. (10 pts) Determine as well the capacity of the facility. (5 pt)
Five-minute average speed in km/h and flow rate in veh/h during 12 hours were collected from...
Five-minute average speed in km/h and flow rate in veh/h during 12 hours were collected from a section of the eastbound lanes of Highway 401 in Toronto. The collected data were plotted to form the scatter diagram shown in the figure below. A curve was drawn to describe the general relationship between speed and flow rate q as shown in the figure. 120 300 Speed km/h 60 1000 Flow Rate vel (a) From the above speed-flow rate curve, determine the...
2. If the relationship between speed and density is linear, mathematically approve that the optimal speed...
2. If the relationship between speed and density is linear, mathematically approve that the optimal speed is half of the free flow speed and optimal density is half of the jam dencity We have Um-0.5Uf, Km-0,5 Kjam
Traffic on a three-lane freeway observes a triangular flow-density relationship with free-flow speed vf=100km/h, capacity c=2000veh/h/lane,...
Traffic on a three-lane freeway observes a triangular flow-density relationship with free-flow speed vf=100km/h, capacity c=2000veh/h/lane, jam density kj=150veh/km/lane. Flow in the freeway from upstream is 5000veh/h, while the ramp flow is negligible (almost zero).At 9:45am, an accident occurs at point A. The vehicles involved close one lane of traffic (total capacity reduces to 4000veh/h) for 15min and afterwards the scene is clear (capacity returns to 6000veh/h). Lucy enters the freeway via the ramp at point B at 10:00am. Distance...
urgent A section of a freeway shows the following relationship between the traffic flow and the...
urgent
A section of a freeway shows the following relationship between the traffic flow and the traffic density: q=50k -0.35k2 a) What is the capacity of the highway section? b) What is the speed at capacity? c) What is the density when the highway is at one quarter of its capacity?
A section of a freeway shows the following relationship between the traffic flow and the traffic...
A section of a freeway shows the following relationship between the traffic flow and the traffic density: q = 50k – 0.35k2 a) (7%) What is the capacity of the highway section? b) (8%) What is the speed at capacity? c) (8%) What is the density when the highway is at one quarter of its capacity?
3- A section of a freeway shows the following relationship between the traffic flow and the...
3- A section of a freeway shows the following relationship between the traffic flow and the traffic density: q = 50k – 0.35k2 a) (7%) What is the capacity of the highway section? b) (8%) What is the speed at capacity?
Question-4: Speed-flow-density relationships of a particular site has resulted in the model U = 68.3(1-10) Where U is the speed (mi/hr), and K is the density (veh/hr/lane) Find the following i. Free flow speed and jam density ii. Derive the equation depicting relationship between flow and density Derive the equation depicting relationship between speed and flow iv. Show the values of free-flow speed, jam density and capacity graphically
Problem 2. (15 pts) Find the relationship between speed and density for a highway with a jam density between 17:5 and 260 pm and a free flow speed of 50 and 65 mph (by increment of 5 mph). (Please refer to Problem 3 for a solution approach to this problem.) Determine the two concentrations achieved at flow value of 1,700 vph. (10 pts) Determine as well the capacity of the facility. (5 pt)
Five-minute average speed in km/h and flow rate in veh/h during 12 hours were collected from a section of the eastbound lanes of Highway 401 in Toronto. The collected data were plotted to form the scatter diagram shown in the figure below. A curve was drawn to describe the general relationship between speed and flow rate q as shown in the figure. 120 300 Speed km/h 60 1000 Flow Rate vel (a) From the above speed-flow rate curve, determine the...
2. If the relationship between speed and density is linear, mathematically approve that the optimal speed is half of the free flow speed and optimal density is half of the jam dencity We have Um-0.5Uf, Km-0,5 Kjam
urgent
A section of a freeway shows the following relationship between the traffic flow and the traffic density: q=50k -0.35k2 a) What is the capacity of the highway section? b) What is the speed at capacity? c) What is the density when the highway is at one quarter of its capacity?
A section of a freeway shows the following relationship between the traffic flow and the traffic density: q = 50k – 0.35k2 a) (7%) What is the capacity of the highway section? b) (8%) What is the speed at capacity? c) (8%) What is the density when the highway is at one quarter of its capacity?
3- A section of a freeway shows the following relationship between the traffic flow and the traffic density: q = 50k – 0.35k2 a) (7%) What is the capacity of the highway section? b) (8%) What is the speed at capacity?
Most questions answered within 3 hours.
-
Question Three
Suppose you as project manager are using the Waterfall
development methodology on a large...
asked 7 minutes ago -
Which statement is not true about welfare in Canada?
A.Benefits typically vary based on one's ability...
asked 39 minutes ago -
Please help me with FLOWCHART and UML diagram for class,
thank you!
#include <iostream>
#include <fstream>...
asked 1 hour ago -
3. Describe the “logic circuit” of the Lac operon. Which
proteins are bound or not to...
asked 1 hour ago -
Ayesha’s adjusted gross income is $60,000 in 2019. She donated a
piece of artwork with a...
asked 1 hour ago -
For Dijkstra’s shortest path algorithm:
a. Give the Big-O time for Dijkstra’s shortest path algorithm
and...
asked 1 hour ago -
Phosphorus violates the 'octet rule' in biological molecules,
forming more covalent bonds than expected based on...
asked 1 hour ago -
A 1.3 eV electron has a 10-4 probability of tunneling
through a 2.4 eV potential barrier....
asked 2 hours ago -
What is the one ingredient that is common to being successful
with all stakeholders?
profit
trust...
asked 2 hours ago -
Write an assembly language 32 bit program that reads in lines of
text by a .txt...
asked 2 hours ago -
what is the density ( in g/L) of hydrogen gas at 29 degrees C and a...
asked 2 hours ago -
5-6. You are considering three investment alternatives for some
spare cash: Old Reliable Corporation stock (A1),...
asked 2 hours ago