A 3.25-mile segment of undivided, four-lane highway is primarily on level terrain. The highway segment does, however, contain one sustained grade of 2.5% that is 3,200 ft long. Other relevant information include: Base free-flow speed = 65 mph %3D 11-ft lanes 4 ft clearance at the roadside (right side) • 20 access points/mile Peak-hour volume = 1,900 veh/h 13% trucks; 2% RVs PHF = 0.90 • Familiar facility users %3D At what LOS is the highway expected to operate? (Hint: Three different analyses will be needed: a) the level terrain portion of the highway, b) the 2.5% upgrade portion of the highway, and c) the 2.5% downgrade portion of the highway.)
A 3.25-mile segment of undivided, four-lane highway is primarily on level terrain. The highway segment does, however, contain one sustained grade of 2.5% that is 3,200 ft long. Other relevant information include: Base free-flow speed = 65 mph %3D 11-ft lanes 4 ft clearance at the roadside (right side) • 20 access points/mile Peak-hour volume = 1,900 veh/h 13% trucks; 2% RVs PHF = 0.90 • Familiar facility users %3D At what LOS is the highway expected to operate? (Hint: Three different analyses will be needed: a) the level terrain portion of the highway, b) the 2.5% upgrade portion of the highway, and c) the 2.5% downgrade portion of the highway.)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A 3.25-mile segment of undivided, four-lane highway is primarily on level terrain. The highway segment
does, however, contain one sustained grade of 2.5% that is 3,200 ft long. Other relevant information
include:
Base free-flow speed = 65 mph
%3!
11-ft lanes
• 4 ft clearance at the roadside (right side)
• 20 access points/mile
Peak-hour volume = 1,900 veh/h
13% trucks; 2% RVs
• PHF = 0.90
• Familiar facility users
At what LOS is the highway expected to operate? (Hint: Three different analyses will be needed: a) the
level terrain portion of the highway, b) the 2.5% upgrade portion of the highway, and c) the 2.5%
downgrade portion of the highway.)
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