A 5% upgrade on a six-lane freeway (three lanes in each direction) is 1.25 mi long. On this segment of freeway, the directional peak-hour volume is 3800 vehicles with 2% large trucks and 4% buses (no recreational vehicles), the peak- hour factor is 0.90, and all drivers are regular users. The lanes are 12 ft wide, there are no lateral obstructions within 10 ft of the roadway, and the total ramp density is 1.0 ramps per mile. A bus strike will eliminate all bus traffic, but it is estimated that for each bus removed from the roadway, seven additional passenger cars will be added as travelers seek other means of travel. a.) What is density, before the bus strike? b.) What is the volume-to-capacity ratio, before the bus strike? c.) What is the level of service of the upgrade segment before the bus strike? d.) What is density, after the bus strike? e.) What is the volume-to-capacity ratio, after the bus strike? f.) What is the level of service of the upgrade segment after the bus strike?
A 5% upgrade on a six-lane freeway (three lanes in each direction) is 1.25 mi long. On this segment of freeway, the directional peak-hour volume is 3800 vehicles with 2% large trucks and 4% buses (no recreational vehicles), the peak- hour factor is 0.90, and all drivers are regular users. The lanes are 12 ft wide, there are no lateral obstructions within 10 ft of the roadway, and the total ramp density is 1.0 ramps per mile. A bus strike will eliminate all bus traffic, but it is estimated that for each bus removed from the roadway, seven additional passenger cars will be added as travelers seek other means of travel. a.) What is density, before the bus strike? b.) What is the volume-to-capacity ratio, before the bus strike? c.) What is the level of service of the upgrade segment before the bus strike? d.) What is density, after the bus strike? e.) What is the volume-to-capacity ratio, after the bus strike? f.) What is the level of service of the upgrade segment after the bus strike?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 5% upgrade on a six-lane freeway (three lanes in each direction) is 1.25 mi
long. On this segment of freeway, the directional peak-hour volume is 3800
vehicles with 2% large trucks and 4% buses (no recreational vehicles), the peak-
hour factor is 0.90, and all drivers are regular users. The lanes are 12 ft wide,
there are no lateral obstructions within 10 ft of the roadway, and the total ramp
density is 1.0 ramps per mile. A bus strike will eliminate all bus traffic, but it is
estimated that for each bus removed from the roadway, seven additional
passenger cars will be added as travelers seek other means of travel.
a.) What is density, before the bus strike?
b.) What is the volume-to-capacity ratio, before the bus strike?
c.) What is the level of service of the upgrade segment before the bus strike?
d.) What is density, after the bus strike?
e.) What is the volume-to-capacity ratio, after the bus strike?
f.) What is the level of service of the upgrade segment after the bus strike?
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