jngraham89
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In PE practice exam from NCEES the following information applies toa four-lane urban feeway.
volume: 2,400 vph (in one direction)
peak hour factor 0.90
base free flow speed 60mph
5% truck traffic in peak hour
12-ft lanes
10-ft outside shoulders
3 interchanges in 6 miles
level terrain
no recreational vehicles
in the solution they came up with a Total Ramp Density of 6 ramps/6 miles=1 ramp/mile.
This is where I am confused. I thought since 3 interchanges in 6 miles the TRD would be 0.5 ramps/mile?
volume: 2,400 vph (in one direction)
peak hour factor 0.90
base free flow speed 60mph
5% truck traffic in peak hour
12-ft lanes
10-ft outside shoulders
3 interchanges in 6 miles
level terrain
no recreational vehicles
in the solution they came up with a Total Ramp Density of 6 ramps/6 miles=1 ramp/mile.
This is where I am confused. I thought since 3 interchanges in 6 miles the TRD would be 0.5 ramps/mile?
