what will be the time-mean speed and space mean speed for this traffic stream?
what will be the time-mean speed and space mean speed for this traffic stream?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Imagine you are recording speed at a point along a three-laneroadway. All vehicles in lane 1 are traveling at 60 mi/h, all vehicles in lane 2 are traveling at 30 mi/h, and all vehicles in lane 3 are traveling at 45 mi/h. There is also a constant spacing of 3168 ft. between vehicles.
If you collect spot speed data for all
vehicles as they cross your observation point, for 60 minutes, what will be the time-mean speed and space mean speed for this traffic stream?
Expert Solution
Given data:
The values given in the question are as follows
Travelling speed of lane-1 vehicles()=60 mi/hr
Travelling speed of lane-2 vehicles()=30 mi/hr
Travelling speed of lane-3 vehicles()=45 mi/hr
Constant spacing(S)=3168 ft or 0.6 mile
Observed travel time(t)=60 minutes or 1 hr
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