A Class I two-lane highway is on level terrain with passing permitted throughout. The highway has...

A Class I two-lane highway is on level terrain with passing permitted throughout. The highway has 3.6 m lanes with 1.1 m shoulders. There are 13 access points per kilometer. The base FFS is 96.5 km/hr. During the peak hour, 500 vehicles are traveling in the analysis direction and 400 vehicles are traveling in the opposing direction. If the PHF is 0.8 and there are 7% large trucks, 7% buses, and 7% recreational vehicles, what is the level of service?

Expert Solution

Ally Wells answered 1 year ago

A class I two lane highway is on level terrain with passing permitted throughout. The highway...

A class I two lane highway is on level terrain with passing permitted throughout. The highway has 11 ft lanes with 4 ft shoulders. There are 16 access points per mile. The base FFS is 60 mi/h. The highway is oriented north and south, and during the peak hour, 440 vehicles are going northbound and 360 vehicles are going southbound. If the PHF is 0.87 and there are 4% large trucks, 3% buses, and 1% recreational vehicles, what is the...

A two-lane highway is currently operating at its two-way capacity in rolling terrain. The traffic stream...

A two-lane highway is currently operating at its two-way capacity in rolling terrain. The traffic stream consists of cars and trucks only. A recent traffic count revealed 720 vehicles (total, both directions) arriving in the most congested 15- min interval. What is the percentage of trucks in the traffic stream based on the ATS service measure? Given: ATS: fG=0.99 when it is rolling terrain, vp>1200 ET= 1.5 when it is rolling terrain, vp>1200

A six-lane freeway with three lanes in each direction is on a level terrain and has...

A six-lane freeway with three lanes in each direction is on a level terrain and has 11-ft lanes with a 4-ft right-side shoulder. The total ramp density is 2 ramps per mile. The directional peak-hour traffic volume is 5400 vehicles with a peak-hour factor of 0.95 and all familiar users. The traffic stream includes 5% trucks and another 5% buses and no recreational vehicles. The city has decided to ban all heavy vehicles from using the freeway during the peak...

The road becomes a class-III two-lane highway after reaching a long bend in the road. The...

The road becomes a class-III two-lane highway after reaching a long bend in the road. The speeds don’t typically change off-peak at the transition, and width/clearance/access are consistent after the transition too. There are 50% no passing zones. What is the LOS of the two-lane highway?

6-lane freeway (3 lanes in each direction) in level terrain has a current one-directional volume of...

6-lane freeway (3 lanes in each direction) in level terrain has a current one-directional volume of 5000 veh/h; it is estimated that in 3 years, volume will have increased to 5600 veh/h. The traffic mix includes 10% trucks. The free-flow speed has been measured at 70 mph and the PHF is 0.95. a) Determine the current LOS. b) Determine the LOS in 3 years. c) After the initial three years, traffic grows at 4% per year, when will capacity be...

A multilane highway has two northbound lanes. Each lane has a capacity of 1500 vehicles per...

A multilane highway has two northbound lanes. Each lane has a capacity of 1500 vehicles per hour. Currently, northbound traffic is consists of 3100 vehicles with 1 occupant, 600 vehicles with 2 occupants, 400 vehicle with 3 occupants, and 20 buses with 50 occupants each. The highway’s performance function is t = t0 ( 1 + 1.15 (x/c)6.87 ) where t is in minutes, t0 is equal to 15 minutes, and x and c are volumes and capacities in vehicle...

Draw a typical cross section for a two-lane highway and explain the principal components.

A four-lane undivided multilane highway (two lanes in each direction) has 3.4 m lanes and 1.5...

A four-lane undivided multilane highway (two lanes in each direction) has 3.4 m lanes and 1.5 m shoulders. At one point along the highway there is a 4% upgrade that is 1 km long. There are 15 access points along this grade. The peak-hour traffic volume has 2500 passenger cars and 200 trucks and buses (no recreational vehicles), and 720 of these vehicles arrive in the most congested 15-min period. This traffic stream is primarily commuters. The measured free-flow speed...

Problem Statement: A four-lane (two-lanes in each direction) freeway is on rolling terrain with 11-ft lanes, a...

Problem Statement: A four-lane (two-lanes in each direction) freeway is on rolling terrain with 11-ft lanes, a 5-ft lateral clearance on right side and 3-ft lateral clearance on the left side of the traveled pavement. The measured free-flow speed is 60-mph. During the peak hour there are 12% large trucks and buses and 6% recreational vehicles. The freeway currently operates at capacity during the evening peak hour. If an additional 11-ft lane is added, and all other factors stay the same,...

A six lane urban freeway (three lanes in each direction) in mountainous terrain has 10-ft lanes...

A six lane urban freeway (three lanes in each direction) in mountainous terrain has 10-ft lanes and obstructions 5 ft from the right edge. For every mile of freeway, there is one interchange. The traffic stream consists of mostly commuters with a peak hour factor of 0.84, peak hour volume of 2500 vehicles, and 4% recreational vehicles. What is the LOS? Assume base free flow speed of 70 mph

Question