A six-lane freeway (three lanes in each direction) in a scenic area has a measured free-flow speed of 55 mi/h. The peak-hour factor is 0.80, and there are 8% large trucks and buses and 6% recreational vehicles in the traffic stream. One upgrade is 5% and 0.5 mi long. An analyst has determined that the freeway is operating at capacity on this upgrade during the peak hour. If the peak-hour traffic volume is 3900 vehicles, what value for the driver population factor was used?

A six-lane freeway (three lanes in each direction) in a scenic area has a measured free-flow speed of 55 mi/h. The peak-hour factor is 0.80, and there are 8% large trucks and buses and 6% recreational vehicles in the traffic stream. One upgrade is 5% and 0.5 mi long. An analyst has determined that the freeway is operating at capacity on this upgrade during the peak hour. If the peak-hour traffic volume is 3900 vehicles, what value for the driver population factor was used?

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: An existing urban freeway with 4 lanes in each direction has the following characteristics. Traffic…

A: Traffic volume, V = 7110 veh/hr PHF = 0.93Lane width = 11 ftShoulder width = 6 ft

Q: A class I two-lane highway is on Rolling terrain with a measured free-flow speed of 90 km/h. and 80%…

A: Class I two lane highway FFS = 90 kmph 80% no passing zonesPHF = 0.87 PT = 5%PR = 10%

Q: Compute the free-flow speed for an interstate with 2 traffic lanes that are 11 ft wide, a 1 ft right…

A: Solution : We known that, FFS=BFFS-fLW-fLC-fN-fID Where FFS = Free flow speed BFFS = Base free…

Q: An existing urban freeway with 4 lanes in each direction has the following characteristics: peak…

A: Freeway:A freeway is a high-speed road without any signals or intersections so there is no…

Q: A segment of rural freeway is being designed for a FFS of 70 mph through rolling terrain. The…

A: Given data: Free Flow Speed (FFS)= 70 mph Design volume = 3000 veh/hr 10% of the design volume is…

Q: An undivided multilane highway segment has two 11-ft lanes in the eastbound direction with no…

A: The given data is shown below: Width=11ftSpeed limit=55 mi/hAccess points=40Distance=1.25…

Q: D (proportion of peak hour traffic traveling in the peak direction):0.65 Trucks: 8% of peak hour…

Q: A four-lane urban freeway segment has a peak demand volume of 3,500 vehicles per hour for the two…

A: Freeway:Freeway is a roadway without any signals or intersections. A freeway does not have any…

Q: An existing six-lane freeway segment is located in an urban area and with 1% grade has the following…

A: Highways are the major component to connect one city or place to another. Where the four-lane or…

Q: A four-lane basic freeway segment on level terrain is being redesigned. The current roadway has 12…

A: Given:- Current roadway: 4 lanes, each 12 ft wide, with 4 ft shoulders- Proposed roadway: 6 lanes,…

Q: SIX-lan freeway lanes in direction) has regular weekday users and currently operates at maximum LOS…

A: Given that,pitch the width= 11 ft.Decrease in lane width pace, LW= 1.9 mph.Complete Lateral…

Q: You are designing a freeway as a passenger-car only facility, and with ideal roadway…

A: You're constructing a motorway that's just for passenger cars and has excellent roadway qualities.…

Q: An urban freeway is to be designed using the following information. AADT = 51,500 veh/day K…

A: Step 1: Determine FFS Free flow speed FFS is given by ;FFS = 75.4 - flw - flc - 3.22 TRD0.84 where…

Q: Traffic volume is 2578 veh/hr with 687 vehicles arriving in peak 15 minutes.There are tow lanes, 12…

A: Therefore, the analysis flow rate is 2578 vehicles per hour.Explanation:Step 1: To calculate the…

Q: A six-lane freeway (three lanes in each direction has regular weekday users and currently operat at…

A: Given:- peak hour factor=0.90 wide=11ft right side shoulder=4ft wide To find:- hourly volume

Q: A 1/2-mile, 4 percent grade section of an urban freeway is to be designed for a LOS C. Determine the…

Q: A freeway section is estimated to carry an annual average daily traffic (AADT) of 40,000 vehicles…

A: Annual average daily traffic, AADT = 40,000 veh / day Directional factor , D = 0.6 , DDHV = 2640 veh…

Q: Consider the problem of traffic flow on a three-lane (one direction) freeway which can be described…

Q: A westbound section of freeway currently has three 12-ft wide lanes, a 6-ft right shoulder, and no…

A: LOS: LOS is referred to as the Level of Service in Highway. It explains the quality of the traffic…

Q: a six-lane multilane highway (three lanes in each direction) has a peak hour factor of 0.90, 3.3…

A: It is required to determine the heavy vehicle adjustment factor. Here, PT is the percentage of…

Q: A Class II two-lane highway needs to be redesigned for an area with rolling terrain. During the peak…

Q: Traffic flow on a three-lane (one direction) freeway can be described by the Greenshields model. One…

Q: Calculate the FFS at this freeway section and then determine the level of service (LOS) when the…

A: j

Q: A four-lane freeway (two lanes in each direction) operates at capacity during the peak hour. It has…

A: Explanation- It is necessary to calculate the free flow speed. FFS=75.4-fLW-fLC-3.22TRD0.84…

Q: Problem 2. Consider a freeway section with three lanes in each direction and with a length of 1.25mi…

A: First condition-Without Bus Removal: The peak hour volume is V=3800 veh/h. The total vehicles are,…

Q: Consider the freeway and traffic conditions described in Problem 6.3. If 180 of the 1800 vehicles…

A: In this question, we have to find the LOS of the freeway. LOS is a measure of relation used for…

Q: a) What is the maximum length of the queue upstream of the bottleneck? b) At what time the queue…

Q: A four-lane rural freeway segment has a 510 m grade length of 2% upgrade followed by a 630 m grade…

A: No of lane in both direction = 4

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

A six-lane freeway (three lanes in each direction)
in a scenic area has a measured free-flow speed
of 55 mi/h. The peak-hour factor is 0.80, and there
are 8% large trucks and buses and 6% recreational
vehicles in the traffic stream. One upgrade is 5%
and 0.5 mi long. An analyst has determined that
the freeway is operating at capacity on this
upgrade during the peak hour. If the peak-hour
traffic volume is 3900 vehicles, what value for the
driver population factor was used?

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

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 3 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

A long segment of suburban freeway is to be designed on level terrain. The level segment, however, is followed by a 4.5% grade, 2.0 miles in length. If the DDHV is 2,500 vehicles per hour with 15% trucks (standard mix), how many lanes will be needed on the (A.) Upgrade, (B.) Downgrade, (C.) Level terrain segment to provide for level of service C? Lane widths and lateral clearances may be assumed to be 12 feet and 6 feet, respectively. Ramp density is expected to be 1.0 ramps per mile. The PHF is 0.92. Good weather, no incidents, no work zones, and regular users of the facility may be assumed.
Answer fast
A 5% upgrade on a six-lane freeway (three lanes in each direction) is 1.25 mi long. On this segment of freeway, there is 3% SUTS and 7% TTs, and the peak-hour factor is 0.90. The lanes are 12 ft wide, there are no lateral obstructions within 6 ft of the roadway, and the total ramp density is 1.0 ramps per mile. What is the maximum directional peak-hour volume that can be accommodated without exceeding LOS C operating conditions in veh/h? Round of your answer to whole number. Blank 1
Consider the problem of traffic flow on a three-lane (one direction) freeway which can be described by the Greenshields model. One lane of the three lanes on a section of this freeway will have to be closed to undertake an emergency bridge repair that is expected to take several hours. It is estimated that the capacity at the work zone will be reduced by 30 percent of that of the section just upstream of the work zone. The mean free flow speed of the highway is 60 mi/h and the jam density is 130 veh/mi/ln. It is estimated that the demand flow on the highway during the emergency repairs is 86 percent of the capacity. Using the deterministic approach, determine the following for the expected repair periods of 1 h, 1.5 h, 2.5 h, 2.75 h, and 3 h. (a) the maximum queue length (in veh) that will be formed 1 h veh1.5 h veh2.5 h veh2.75 h veh3 h veh (b) the total delay (in h) 1 h h1.5 h h2.5 h h2.75 h h3 h h (c) the number of vehicles that will…
If Vf = 2327 VPH with 9% trucks, VR1 = 653 VPH with 5% trucks, and VR2 = 594 VPH with 8% trucks, what is the passenger car equivalents (Vpcph) of the onramp? Assume that the roadway is urban.