Find the upgrade and downgrade service flow rates and service volumes for an eight-lane freeway with the following characteristics: • 11 ft lanes • 2 ft right-side lateral clearance • 4.2 ramps/mile • 3% trucks (standard mix; standard mix, which means for freeways is 70% SUTs/30%TTs) • Good weather, no incidents, no work zones, and regular drivers • PHF = 0.92 The segment in question is on a sustained grade of 3.5%, 1.5 miles in length

Find the upgrade and downgrade service flow rates and service volumes for an eight-lane freeway with the following characteristics: • 11 ft lanes • 2 ft right-side lateral clearance • 4.2 ramps/mile • 3% trucks (standard mix; standard mix, which means for freeways is 70% SUTs/30%TTs) • Good weather, no incidents, no work zones, and regular drivers • PHF = 0.92 The segment in question is on a sustained grade of 3.5%, 1.5 miles in length

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter7: Intersection Design

Section: Chapter Questions

Problem 10P

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HW3: LOS of Basic Freeway Given: » Four-lane freeway (2 in each direction) » Lane width =11 ft Right-side lateral clearance =2 ft vV Commuter traffic (regular users) Peak-hour, vV Peak-direction demand volume = 2,000 veh/h 5% trucks, 0% RVs PHF = 0.92 TRD = 4 ramps/mile Rolling terrain v v
Step by step solutionProblem 3: A four-lane freeway (two lanes in each direction) operates at capacity during the peak hour. It has 11-ft lanes, 5-ft shoulders, and there are 3 ramps within 3 miles upstream of the segment midpoint and 3 ramps within 3 miles downstream of the segment midpoint. The freeway is on rolling terrain and has 10% heavy vehicles with a PHF of 0.9. It is known that 15% of the AADT occurs in the peak hour and the directional factor is 0.7. Determine: (a) Heavy vehicle adjustment factor(b) Free-flow speed(c) Capacity(d) Volume-to-capacity ratio(e) Density and LOS(f) AADT(g) What is the highest possible value of the heavy vehicle adjustment factor? (h) If the volume exceeds capacity, what is the LOS? Note: No need to show calculations for (g) and (h).
Us= 95 - 0.95K None of the above answes Determine the L.O.S of the road if PHF = 0.88, D=60%, K=0.11, V=115 kph? For an Existing 4 lane freeway having the following features: Lane and shoulder width = 12 ft, 6 ft, weekday commuter Percent of trucks and buses = 8% and 4% respectively and Et =2.5, Eb =2.2. AADT = 35200 veh/day, Assume lane capacity 2000 pc/hr 1 Add file Submit ver submit passwords through Google Forms. This form was created inside of Palestine Polytechnic university. Report Abuse
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Determine the L.O.S of the road if PHF = 0.88, D= 60%, K=O.11, V=115 kph? For an Existing 4 lane freeway having the following features: • Lane and shoulder width = 12 ft, 6 ft, weekday commuter • Percent of trucks and buses = 8% and 4% respectively and Et =2.5, Eb =2.2• AADT = 35200 veh/day, Assume lane capacity * 2000 pc/hr
BFS in an eight-lane freeway has two interchanges in six miles along level terrain. The lane width is 11-ft. The left shoulder is 5.0 ft. The right shoulder width is also 5.0 ft. The traffic volume in the analysis period is 3225 veh/h which consists of 14% heavy trucks. Assume PHF is 0.926. What is the LOS? To increase the FFS, the engineer decided to redraw the pavement marking to create four 12-ft lane per direction, with no left shoulder and a 6.0 ft right shoulder. What is the new FFS
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a segment of freeway consists of two upgrades of 2%, 800 m long and 3% 600 m long. Determine the PCE trucks/buses and recreational vehicles on this composite upgrade if 6% of vehicles are truck and 10% are recreational vehicles. Determine the number of lanes required for a freeway section if the section is to operate at LOS C. The input parameters include: One Cloverleaf interchange per mile (ramp density = 4 ramps/mile or 2.5 ramps/km) lane width = 12 fr (3.6m) right-side lateral clearance = 6years (1.8m) traffic composition: 10% trucks, 2% RVs V = 3000 veg/h Number of lanes: Must be greater than or equal to 2 Pero direction PHF = 0.95 Analysis segment is (0.35 miles (0.56km)) long with 4.5 % grade