A section of four lane (two lanes in each direction) freeway in mountainous terrain, which is 2.5 mi long, is to be improved to carry on a regular weekday a heavy volume of 3000 veh/h, consisting of 80% passenger cars, 15% trucks, 3% buses, and 2% recreational vehicles. The PHF is 0.90. Determine the additional number of 12-ft lanes required in each direction if the road is to operate at LOS B. The base FFS is 65mph, there is a lateral obstruction 4ft from the pavement on the right side of the road, and interchange spacing is 2 mi. Driver population adjustment factor fp= 1.0.
A section of four lane (two lanes in each direction) freeway in mountainous terrain, which is 2.5 mi long, is to be improved to carry on a regular weekday a heavy volume of 3000 veh/h, consisting of 80% passenger cars, 15% trucks, 3% buses, and 2% recreational vehicles. The PHF is 0.90. Determine the additional number of 12-ft lanes required in each direction if the road is to operate at LOS B. The base FFS is 65mph, there is a lateral obstruction 4ft from the pavement on the right side of the road, and interchange spacing is 2 mi. Driver population adjustment factor fp= 1.0.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A section of four lane (two lanes in each direction) freeway in mountainous terrain, which is 2.5 mi long, is to be improved to carry on a regular weekday a heavy volume of 3000 veh/h, consisting of 80% passenger cars, 15% trucks, 3% buses, and 2% recreational vehicles. The PHF is 0.90. Determine the additional number of 12-ft lanes required in each direction if the road is to operate at LOS B. The base FFS is 65mph, there is a lateral obstruction 4ft from the pavement on the right side of the road, and interchange spacing is 2 mi. Driver population adjustment factor fp= 1.0.
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