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 clearance, 4.2 ramps/mile, 3% trucks, good weather, regular drivers, PHF of 0.92) The segment in question is on a sustained grade of 3.5%, 1.5 miles in length.
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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 clearance, 4.2 ramps/mile, 3% trucks, good weather, regular drivers, PHF of 0.92) The segment in question is on a sustained grade of 3.5%, 1.5 miles in length.
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- Find the service flow rate and service volume rate for an 8-lane-one direction urban freeway at level of service (A) with the following: 11-ft lane, 0-ft lane clearance, 2-per mile interchange density and 5% truck. The section is 4% upgrade for 1 mile. Use PHF = 0.85.A long segment of suburban freeway is to be designed on level terrain. The level segment, however, is followed by a 4.5% grade, 2.0 miles in length. If the DDHV is 2,500 vehicles per hour with 15% trucks (standard mix), how many lanes will be needed on the (A.) Upgrade, (B.) Downgrade, (C.) Level terrain segment to provide for level of service C? Lane widths and lateral clearances may be assumed to be 12 feet and 6 feet, respectively. Ramp density is expected to be 1.0 ramps per mile. The PHF is 0.92. Good weather, no incidents, no work zones, and regular users of the facility may be assumed.A basic segment of a rural freeway has the following characteristics: • Four-lanes (two lanes in each direction)%3B There is one ramp within 3 miles upstream, and 2 ramps within 3 miles downstream; 10-ft lanes; Right shoulder width of 4 ft; • Level terrain;. 10% trucks and 5% buses in the vehicle stream. Calculate the FFS at this freeway section and then determine the level of service (LOS) when the flow rate is 1740 pc/h/In. (Write the answer for the LOS in the box below).
- 1. An existing urban freeway in rolling terrain is to be analyzed to determine LOS using the following information: Number of lanes in each direction: 3 Peak hour volume: 3500 veh/h (in the peak direction, mainly commuter traffic) 8% trucks 0% recreational vehicles PHF=0.95 Lane width: 11 ft Lateral clearance: 4 ft Average interchange spacing: 1.0 mile Base FFS: 65 mphA new basic freeway segment will have 3 lanes in each direction. The left and center lane each has a width of 12 ft while the width of the right lane is 13 ft. The left shoulder is 4 ft while the right shoulder is also 4 ft. There are 2 interchanges within 6 miles (3 miles upstream and 3 miles down stream).The site has level terrain, the design speed is 80 mph the hourly design volume is 5250 veh/h, which includes 9.0% trucks and buses. The peak hour factor is 0.870. Calculate FHV, VP, FFS, LOS Show all workSpreadsheet is required) 6. 7. An eigt-lane urban freeway (four lanes in each direction) has -ft lanes, with obstructions 2 ft from the right edge of the pavement and aramps over 6-mi analysis segment. Determine Free Flow Speed (FFS).
- A 960-m segment of 5.4-km six lane divided TWLTL multilane highway in a sub-urban area is at a 1.5% grade. The highway is in level terrain and lane widths are 3-m. The peak-hour volume is 3500 veh/hr/ln, PHF is 0.90, and there are 13% trucks and 2% RVs. Determine the LOS for the following: (a) extended directional segments (b) 3% upgrade Please include complete solutionA rural collector highway is to be constructed in an area of rolling terrain where the ADT is 950 veh/day. For this situation, determine the following design values: a. Minimum design speed b. Desirable lane width and shoulder width c. Maximum desirable gradeAn urban freeway presently has three 12-ft lanes on a 3 percent upgrade 1.75 mi long. The traffic includes 8 percent trucks and buses (recreational vehicles are negligible). There are no lateral obstructions. Design speed is 70 MPH. (a) What is the present capacity of the upgrade? (b) How much could the capacity be increased by widening and remarking the existing traveled way to provide four 10-ft lanes up the grade?
- A four-lane freeway with 12 ft lanes and 5 shoulders is on a 2% grade for the 1.25-mi analysis stretch. There are 2 ramps in this section. If the traffic mix is generally 6% heavy vehicles with a 70/30 SUT/TT split and a PHF of 0.8, how many vehicles can the freeway carry in the peak hour without dropping below Level of Surface (LOS) C?A freeway is to be designed to provide LOS C for the following conditions: design hourly volume of 5600 veh/h; PHF: 0.92; trucks: 6%; free flow speed: 70 mi/h; no lateral obstructions;rolling terrain; total ramp density of 0.75 ramps per mile.Determine: whether eight (four in each direction) 12 ft lanesare enough to provide LOS C.A 960-m segment of 5.4-km six lane divided TWLTL multilane highway in a suburban area is at a 1.5% grade. The highway is in level terrain and lane widths are 3-m. The peak-hour volume is 3500 veh/hr/In, PHF is 0.90, and there are 13% trucks and 2% RVs. Determine the LOS for the following: (a) extended directional segments (b) 3% upgrade(c) 4% downgrade