One segment of a two-lane, two-way rural highway is on rolling terrain and currently operates at maximum level of service C conditions. The annual growth rate of traffic on this segment of road is about 5%, and studies shown that it will continue to grow at this rate for the rest of this decade. Assuming a K factor (design hour factor) for this segment of road = 0.13, determine in how many years will the number of lanes have to be increased if the level of service must not be worse than D?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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One segment of a two-lane, two-way rural highway is on rolling terrain and currently operates at
maximum level of service C conditions.
The annual growth rate of traffic on this segment of road is about 5%, and studies shown that it
will continue to grow at this rate for the rest of this decade.
Assuming a K factor (design hour factor) for this segment of road 0.13, determine in how
many years will the number of lanes have to be increased if the level of service must not be
worse than D?
Transcribed Image Text:One segment of a two-lane, two-way rural highway is on rolling terrain and currently operates at maximum level of service C conditions. The annual growth rate of traffic on this segment of road is about 5%, and studies shown that it will continue to grow at this rate for the rest of this decade. Assuming a K factor (design hour factor) for this segment of road 0.13, determine in how many years will the number of lanes have to be increased if the level of service must not be worse than D?
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number of years = log(3) / log(1.05) number of years = 14.2 years

the result is 22.51 years

how didi you get 14.2 years ? 

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