A four-lane rural freeway segment has a 510 m grade length of 2% upgrade followed by a 630m grade length of 3%. The freeway has 3.4-m lane, 1.5m left-shoulder lateral clearances and interchanges spaced at every 25 km. During the peak hour, there are 6% trucks, 2% buses, 2% recreational vehicles and the rest are passenger cars. Driver population adjustment is determined to be 0.90, peak hour factor is 0.90 and the BFFS is 110 km/h. At present, the freeway operates at capacity during the peak hour in the direction in question. If an additional 3.4 m lane is introduced, and all other factors stay the same, what will be the new level of service?
A four-lane rural freeway segment has a 510 m grade length of 2% upgrade followed by a 630m grade length of 3%. The freeway has 3.4-m lane, 1.5m left-shoulder lateral clearances and interchanges spaced at every 25 km. During the peak hour, there are 6% trucks, 2% buses, 2% recreational vehicles and the rest are passenger cars. Driver population adjustment is determined to be 0.90, peak hour factor is 0.90 and the BFFS is 110 km/h. At present, the freeway operates at capacity during the peak hour in the direction in question. If an additional 3.4 m lane is introduced, and all other factors stay the same, what will be the new level of service?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Civil Engineering
A four-lane rural freeway segment has a 510 m
grade length of 2% upgrade followed by a 630 m
grade length of 3%. The freeway has 3.4-m lane,
1.5m left-shoulder lateral clearances and
interchanges spaced at every 25 km. During the
peak hour, there are 6% trucks, 2% buses, 2%
recreational vehicles and the rest are passenger
cars. Driver population adjustment is determined to
be 0.90, peak hour factor is 0.90 and the BFFS is
110 km/h. At present, the freeway operates at
capacity during the peak hour in the direction in
question. If an additional 3.4 m lane is introduced,
and all other factors stay the same, what will be
the new level of service?
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