Question

In: Civil Engineering

A four-lane urban freeway is rolling on rolling terrain with 12-ft lanes, obstructions 2-ft from the...

A four-lane urban freeway is rolling on rolling terrain with 12-ft lanes, obstructions 2-ft from the right edge of the traveled pavement, and nine ramps within three miles upstream and three miles downstream of the midpoint of the analysis segment. The traffic stream consists primarily of commuters. A directional weekday peak-hour volume of 2400 vehicles is observed with 800 vehicles arriving in the most congested 15-min period. If the traffic stream has 10% large trucks and buses and recreational vehicles, determine the level of service.

Solutions

Expert Solution


Related Solutions

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
An existing four lane section of urban freeway (3 lanes each way) is located in rolling...
An existing four lane section of urban freeway (3 lanes each way) is located in rolling terrain and has 10’ travel lanes, no lateral obstructions within 5’ of the pavement edge. The roadway has 8 ramps upstream and 4 ramps downstream of the midpoint of the six mile analysis segment. The traffic stream contains 10% trucks and buses, and 4% RV’s. The peak hour directional volume is 3200 vehicles with the heaviest 15 minute volume of 800 vehicles. What is...
A six-lane recreational freeway has the following characteristics: 12 ft lanes, 6 ft lateral clearances, 2...
A six-lane recreational freeway has the following characteristics: 12 ft lanes, 6 ft lateral clearances, 2 ramps/mi, 10% trucks (standard mix), peak-hour factor=0.95, level terrain, peak-hour demand=4,000 veh/h. Because the facility serves recreational users to a nearby ski area, the peak period occurs on weekends, and light to moderate snow is the normal weather pattern. If virtually all users of the facility are unfamiliar with the roadway, what is the expected LOS during the peak period?
An existing rural 4-lane freeway (2 lanes in each direction) has 11-ft lanes and 2-ft lateral...
An existing rural 4-lane freeway (2 lanes in each direction) has 11-ft lanes and 2-ft lateral clearance. The freeway hasa peak-hour volume of 1,800 veh/h in one direction, 5% trucks in the traffic stream, and a PHF of 0.92. The freeway has 1 cloverleaf interchange within three miles of the midpoint of segment, and runs through level terrain. No recent field speed data is available. a) Using HCS7, determine the LOS during the peak hour. b) What is the capacity...
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...
TRP 631: HIGHWAY TRAFFIC OPERATIONS An older four-lane freeway has the following characteristics: 11 ft lanes...
TRP 631: HIGHWAY TRAFFIC OPERATIONS An older four-lane freeway has the following characteristics: 11 ft lanes No lateral clearance 4.5 ramps/mile 5% truck( standard mix) Peak-hour factor = 0.90 Rolling Terrain The present peak-hour demand on the facility is 2,100 veh/h, and anticipated growth is expected to be 3% per year. What is the present LOS? What is the expected LOS in 5 years? 10 years? 20 years?. To avoid breakdown (LOS F), when will substantial improvements be needed to...
[HCM for Basic Freeway Segments] A four-lane freeway (two lanes in each direction) has an observed...
[HCM for Basic Freeway Segments] A four-lane freeway (two lanes in each direction) has an observed demand volume of 2400 veh/h (one direction) during the peak hour. The freeway is on rolling terrain and the traffic stream consists of passenger cars and trucks only. The peak-hour factor is 0.75 and the traffic is all commuters. If the peak 15-min demand flow rate under equivalent base conditions is estimated to be 2000 pc/h/ln, what is the percentage of trucks in this...
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 westbound section of freeway currently has three 12-ft wide lanes, a 6-ft right shoulder, and...
A westbound section of freeway currently has three 12-ft wide lanes, a 6-ft right shoulder, and no ramps within 3 miles upstream and downstream of the segment midpoint. It is on rolling terrain with 10% heavy vehicles and is operating at capacity with a peak-hour factor of 0.9. If the road is expanded to four 11-foot lanes with a 2-foot right shoulder, and traffic after the expansion is projected to increase by 10% with the same heavy vehicle percentage and...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT