Unformatted text preview: factor of 0.80, a rolling terrain, 10ft lanes, a 60 mph design speed, and adequate lateral clearances, determine the minimum number of lanes needed to provide for this. QUESTION 3 A sixlane urban freeway (three lanes in each direction) is on rolling terrain with a 70mph design speed, 10ft lanes, with obstructions 2 ft from pavement edge at median and roadside. A directional peakhour volume of 1800 vehicles is observed with 550 vehicles arriving in the most congested 15min period. If the traffic stream has 10 percent trucks, 8 percent buses and no recreational vehicles, determine (a) the level of service (b) how many additional vehicles can be added to the peak hour before the freeway reaches capacity....
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 Spring '10
 KK
 Transportation Engineering

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