Question

A six-lane multilane highway (three lanes in each direction) has a peak-hour factor of 0.90, 11-ft lanes with a 4-ft right side shoulder, and a two-way left-turn lane in the median. The directional peak-hour traffic flow is 4000 vehicles, and the traffic stream has 5% single-unit trucks and 5% tractor-trailers. What will the level of service of this highway be on a 2.5% upgrade that is 1.5 miles long if the speed limit is 55 mph and there are 15 access points per mile?

Answer #1

A six-lane divided multilane highway (three lanes in each
direction) has a measured free-flow speed of 50 mi/h. It is on
mountainous terrain with a traffic stream consisting of 7% large
trucks and buses and 3% recreational vehicles. The driver
population adjustment in 0.92. One direction of the highway
currently operates at maximum LOS C conditions and it is known that
the highway has PHF=0.90.
1. Determine the hourly volume for these conditions.
2. How many vehicles can be added...

Given the following information of a divided multilane highway
section located in rolling terrain.
2 lanes per direction
Posted speed limit = 55 mi/h
2 access points per mile
Lane widths = 11 feet
Shoulder width (right side) = 5 feet
Shoulder width (left side) = 3 feet
PHF =0.80
Directional peak hour volume =2000 vehicles with 7% single-unit
trucks and 3 %
tractor-trailer trucks.
Determine the level of service.

An eight-lane freeway (four lanes in each direction) is on
rolling terrain and has 11-ft lanes with a 4- ft right-side
shoulder. The total ramp density is 1.5 ramps per mile. The
directional peak-hour traffic volume is 5400 vehicles with 11%
heavy vehicles. The peak 15-minute volume is 1421 vehicles. What
are the freeway’s density and level of service

An eight-lane freeway (four lanes in each direction) is on
rolling terrain and has 11-ft lanes with a 4-ft right-side
shoulder. The total ramp density is 1.5 ramps per mile. The
directional peak-hour traffic volume is 5400 vehicles with 11%
heavy vehicles. The peak-hour factor is 0.95. It has been decided
that heavy vehicles will be banned from the freeway during the peak
hour. What will the freeway’s density and level of service ben
before and after the ban? (Assume...

A segment of four-lane freeway (two lanes in each direction) has
a 3% upgrade that is 1500 ft long followed by a 1000-ft 4% upgrade.
It has 12-ft lanes and 3-ft shoulders. The directional hourly
traffic flow is 2000 vehicles with 3% SUTs and 3% TTs. The total
ramp density for this freeway segment is 2.33 ramps per mile. if
the peak-hour factor is 0.90, what is the level of service of this
compound-grade freeway segment?

A segment of four-lane freeway (two lanes in each direction) has
a 3% upgrade that is 1500 ft long followed by a 1000-ft 4% upgrade.
It has 12-ft lanes and 3-ft shoulders. The directional hourly
traffic flow is 2000 vehicles with 3% SUTs and 3% TTs. The total
ramp density for this freeway segment is 2.33 ramps per mile. if
the peak-hour factor is 0.90, what is the level of service of this
compound-grade freeway segment?

A six- lane freeway (three lanes in each direction) in a scenic
area has a measured free- flow speed of 55 mi/ h. The peak- hour
factor is 0.80, and there are 7% SUTs and 3% TTs in the traffic
stream. One upgrade is 4.5% and 1.5 mi long. Free-flow speed is 70
mph. If the peak- hour traffic volume is 3900 vehicles, determine
level of service?

An 8-lane freeway has a peak hour volume of 2800 vehicles. One
particular 8-mile section of the freeway with free flow speed of
60.255 mph and a peak hour factor of 0.9. Seven percent (7%) of the
peak hour traffic is single unit trucks and three percent (3%) is
tractor trailers. Assume commuter drivers and rolling terrain.
Find service flow rate___ pc/ hr/ ln
level of service ____
density ____ veh / mile

A segment of four-lane freeway (two lanes in each direction) has
a 3% upgrade that is 450 m long followed by a 300-m 4% upgrade. It
has 3.6 m lanes and 0.9 m shoulders. The directional hourly traffic
flow is 2000 vehicles with 5% large trucks and buses (no
recreational vehicles). The total ramp density for this freeway
segment is 1.45 ramps per kilometer. If the peak hour factor is 0.9
and all of the drivers are regular users, what...

A four-lane freeway (two lanes in each direction) in rolling
terrain has a peak 15-min flow rate of 1800 veh/h during the peak
hour. The traffic stream contains 6% trucks, 3% buses, and 5%
recreational vehicles. What is the analysis flow rate (i.e., the
peak 15-min demand flow rate under equivalent base conditions in
pc/h/ln)?

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