Determine the number of lanes (both for upgrade direction and downgrade direction) required for a freeway section if the section is to operate at LOS C. The input data is: Number of lanes: Must be 2 or greater per direction Lane width = 11 ft Right-side lateral clearance = 6 ft Analysis segment is 0.32 miles long with a 4.0% grade V= 3500 veh/hr (primarily commuter traffic and familiar drivers) • PHF = 0.95 Traffic composition: 15 % Trucks, 2 % RVs One cloverleaf interchange per mile (ramp density = 4 ramps/mile) Clover Leaf Interchange

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
icon
Related questions
Question

Plz, solve this problem by using the table.

 

Transportation Engineering-2

Determine the number of lanes (both for upgrade direction and downgrade direction)
required for a freeway section if the section is to operate at LOSS C. The input data is:
• Number of lanes: Must be 2 or greater per direction
• Lane width = 11 ft
• Right-side lateral clearance = 6 ft
• Analysis segment is 0.32 miles long with a 4.0 % grade
• v = 3500 veh/hr (primarily commuter traffic and familiar drivers)
• PHF = 0.95
• Traffic composition: 15 % Trucks, 2 % RVs
• One cloverleaf interchange per mile (ramp density = 4 ramps/mile)
Clover Leaf
Interchange
Transcribed Image Text:Determine the number of lanes (both for upgrade direction and downgrade direction) required for a freeway section if the section is to operate at LOSS C. The input data is: • Number of lanes: Must be 2 or greater per direction • Lane width = 11 ft • Right-side lateral clearance = 6 ft • Analysis segment is 0.32 miles long with a 4.0 % grade • v = 3500 veh/hr (primarily commuter traffic and familiar drivers) • PHF = 0.95 • Traffic composition: 15 % Trucks, 2 % RVs • One cloverleaf interchange per mile (ramp density = 4 ramps/mile) Clover Leaf Interchange
Table 6.3 Adjustment for Lane Width
Lane width (ft)
Reduction in free-flow speed, fawr (mi/h)
12
0.0
11
1.9
10
6.6
Reproduced with permission of the Transportation Research Board, Highway Capacity Manual
2010, Copyright, National Academy of Sciences, Washington, D.C. Exhibit 11-8, p. 11-11.
Table 6.4 Adjustment for Right-Shoulder Lateral Clearance
Reduction in free-flow speed, fic (mi/h), lanes in one direction
Right-shoulder
lateral clearance (ft)
2
3
4
25
26
0.0
0.0
0.0
0.0
0.6
0.4
0.2
0.1
4
1.2
0.8
0.4
0.2
1.8
1.2
0.6
0.3
2
2.4
1.6
0.8
0.4
3.0
2.0
1.0
0.5
3.6
2.4
1.2
0.6
Reproduced with permission of the Transportation Rescarch Board, Highnway Capacity Maual 2010,
Copyright, National Academy of Sciences, Washington, D.C. Exhibit 11-9, p. 11-12.
Transcribed Image Text:Table 6.3 Adjustment for Lane Width Lane width (ft) Reduction in free-flow speed, fawr (mi/h) 12 0.0 11 1.9 10 6.6 Reproduced with permission of the Transportation Research Board, Highway Capacity Manual 2010, Copyright, National Academy of Sciences, Washington, D.C. Exhibit 11-8, p. 11-11. Table 6.4 Adjustment for Right-Shoulder Lateral Clearance Reduction in free-flow speed, fic (mi/h), lanes in one direction Right-shoulder lateral clearance (ft) 2 3 4 25 26 0.0 0.0 0.0 0.0 0.6 0.4 0.2 0.1 4 1.2 0.8 0.4 0.2 1.8 1.2 0.6 0.3 2 2.4 1.6 0.8 0.4 3.0 2.0 1.0 0.5 3.6 2.4 1.2 0.6 Reproduced with permission of the Transportation Rescarch Board, Highnway Capacity Maual 2010, Copyright, National Academy of Sciences, Washington, D.C. Exhibit 11-9, p. 11-12.
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Transportation planning process
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
  • SEE MORE QUESTIONS
Recommended textbooks for you
Structural Analysis
Structural Analysis
Civil Engineering
ISBN:
9781337630931
Author:
KASSIMALI, Aslam.
Publisher:
Cengage,
Structural Analysis (10th Edition)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Sustainable Energy
Sustainable Energy
Civil Engineering
ISBN:
9781337551663
Author:
DUNLAP, Richard A.
Publisher:
Cengage,
Traffic and Highway Engineering
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning