The data shown below were obtained by time-lapse photography on a highway. Use regression analysis to fit these data to the Greenshields model and determine the following. Speed (mi/h) Density (veh/mi) 18.5 86 25.7 71 35.1 56 42.3 42 53.4 57.3 21 16 (a) the mean free speed (in mi/h) 80.2585 x Your response differs from the correct answer by more than 10%. Double check your calculations. mi/h (b) the jam density (in veh/mi) 94.0235 x Your response differs from the correct answer by more than 10%. Double check your calculations. veh/mi (c) the capacity (in veh/h) 2227 × Your response differs from the correct answer by more than 10%. Double check your calculations. veh/h (d) the speed at maximum flow (in mi/h) 40.1293 × Your response differs from the correct answer by more than 10%. Double check your calculations. mi/h
The data shown below were obtained by time-lapse photography on a highway. Use regression analysis to fit these data to the Greenshields model and determine the following. Speed (mi/h) Density (veh/mi) 18.5 86 25.7 71 35.1 56 42.3 42 53.4 57.3 21 16 (a) the mean free speed (in mi/h) 80.2585 x Your response differs from the correct answer by more than 10%. Double check your calculations. mi/h (b) the jam density (in veh/mi) 94.0235 x Your response differs from the correct answer by more than 10%. Double check your calculations. veh/mi (c) the capacity (in veh/h) 2227 × Your response differs from the correct answer by more than 10%. Double check your calculations. veh/h (d) the speed at maximum flow (in mi/h) 40.1293 × Your response differs from the correct answer by more than 10%. Double check your calculations. mi/h
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The data shown below were obtained by time-lapse photography on a highway. Use regression analysis to fit these data to the Greenshields model and determine the following.
Speed (mi/h) Density (veh/mi)
18.5
86
25.7
71
35.1
56
42.3
42
53.4
57.3
21
16
(a) the mean free speed (in mi/h)
80.2585
x
Your response differs from the correct answer by more than 10%. Double check your calculations. mi/h
(b) the jam density (in veh/mi)
94.0235
x
Your response differs from the correct answer by more than 10%. Double check your calculations. veh/mi
(c) the capacity (in veh/h)
2227
×
Your response differs from the correct answer by more than 10%. Double check your calculations. veh/h
(d) the speed at maximum flow (in mi/h)
40.1293
×
Your response differs from the correct answer by more than 10%. Double check your calculations. mi/h
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