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Unformatted text preview: 9. Assuming a linear speeddensity relationship, the mean free speed is observed to be 55 mph near zero density, and the corresponding jam density is 130 veh/mi. Assume that the average length of vehicles is 19 ft. (a) Write down the speeddensity and flowdensity equations (b) Draw the u k, u q, and q k diagrams indicating critical values (c) Compute speed and density corresponding to a flow of 90 veh/hr (d) Compute the average headways, spacings, clearances, and gaps when the flow is maximum. 10. On a specific westbound section of highway, studies show that the speeddensity relationship is The highways capacity is 3800 veh/hr and the jam density is 140 veh/mi. (a) What is the spacemean speed of the traffic at capacity? (b) What is the freeflow speed?...
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This note was uploaded on 10/29/2011 for the course TTE 4201 taught by Professor Moses during the Fall '11 term at FSU.
- Fall '11