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A segment of urban four-lane (two lanes in each direction) has a 3% upgrade that is 1500 ft long followed by a 1000-ft 4% upgrade. It has 12ft lanes...
1. A segment of urban four-lane (two lanes in each direction) has a 3% upgrade that is 1500 ft long followed by a 1000-ft 4% upgrade. It has 12ft lanes and 3ft shoulders. The base free-flow speed is 65 mph and the directional hourly traffic flow is 2000 vehicles with 5% large trucks and buses (no recreational vehicles). There are no interchanges in the vicinity of this freeway segment. If the peak-hour factor is .90 and all of the drivers are regular users, what is the level of the service of this compound-grade freeway segment?
SOLUTION – 6798073 Since directional flow is given, for one direction, all calculations are being carried out for onedirection of flow (answer is same for the opposite flow lanes). There are...