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(a) If the minimum time headway of a road is 2.4 sec and the velocity of vehicles is 60 mph, find density and flow of the vehicles.

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73

(b)
Speed data were collected at a section of highway during and after utility maintenance work. The speed characteristics are given below. Determine whether there was any significant difference between the average speeds at the 95% confidence level.
overline $u_{1}$ = 35.3mph $u_{2} = 38.7 m p h$
$S_{1}$ = 7.5mph $S_{2} = 7.4 m p h$
$n_{1} = 250$ $n_{2} = 280$

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97

Created: 4 months ago | Updated: 4 months ago

Updated: 4 months ago

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