An eight-lane freeway (four lanes in each direction) is on rolling terrain and has 11-ft lanes...
6.28 A six-lane freeway (three lanes in each direction) in rolling terrain has 10-ft lanes and obstructions 4 ft from the right edge of the traveled pavement. There are five ramps within three miles upstream of the segment midpoint and four ramps within three miles downstream of the segment midpoint. A directional peak-hour volume of 2000 vehicles (primarily commuters) is observed, with 600 vehicles arriving in the highest 15-min flow rate period. The traffic stream contains 12% large trucks and...
1) Find the LOS for a 6-lane Freeway with the following data: a. 6-lanes (3 lanes in each direction) b. Lane widths 10 ft c. Right-side lateral clearance 4 ft d. Commuter traffic e. Peak hour, peak-directional demand volume 6500 veh/hr f. PHF 0.95 g. Traffic composition: 10% trucks, 3% RV's h. Ramp density of 2 ramps/mile i. Rolling terrain 1) Find the LOS for a 6-lane Freeway with the following data: a. 6-lanes (3 lanes in each direction) b....
A four-lane freeway is located on rolling rural terrain and has two 12-ft lanes in each direction and no lateral obstructions within 8 ft of the right-hand lane. The traffic stream consists of cars and trucks only (no RVs). A peak-hour volume of 3600 vehicles is observed, with 1000 arriving in the most congested 15-minute period. TRD-0.24 ramps/mi. If any data are missing, adopt default values from Table 3.3 a. What is the PHF? b. What is the density of...
A six-lane divided highway (three lane in each direction) is on rolling terrain with two access points per mile and has 10-ft. lanes, with a 5-ft. shoulder on the right side and a 3-ft. shoulder on the left side. The peak-hour factor is 0.80, and the directional peak-hour volume is 3000 vehicles per hour. There are 6% large trucks, 2% buses, and 2% recreational vehicles. A significant percentage of nonfamiliar roadway users are in the traffic stream (the driver population...
transportation design problem 1. A six-lane urban freeway is on level terrain with 12-ft lanes, obstructions 3-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 2800 vehicles is observed with 900 vehicles arriving in the most congested 15-min period. If the traffic stream has 11% large trucks and buses...
A six-lane freeway (three lanes in each direction) in rolling terrain has 10-ft lanes and obstructions 4 ft from the right edge of the pavement. There are 4 ramps within 6 miles. A directional peak-hour volume of 4500 veh/h is observed, with 1250 vehicles arriving in the highest 15-min flow rate period. The traffic stream contains 15% heavy vehicles. What is the density and the corresponding level of service (LOS) of the traffic stream? Do not use on the chart...
Multiple Choice Problems (Multiple Sections) 6.38 A six-lane freeway (three lanes in each direction) in rolling terrain has 10-ft lanes and obstructions 4 ft from the right edge of the traveled pavement. There are 5 ramps within 3 mile:s upstream of the segment midpoint and 4 ramp:s within 3 miles downstream of the segment midpoint. A directional peak-hour volume of 2000 vehicles is observed, with 600 vehicles arriving in the highest 15-min flow rate period. The traffic stream contains 18%...
Problem 1. 6-lane freeway on a rolling terrain, 12-ft lanes, 6-ft lateral clearance, 2 ramps within 3 miles upstream and 2 ramps within 3 miles downstream, Peak hour volume 2400 veh, 900 veh in the most congested 15-min Familiar drivers FIND: Maximum number of heavy vehicles for LOS C
A divided multilane highway is a recreational area (fp = 0.90) has four lanes (two lanes in each direction) and is on rolling terrain. The highway has 10-ft lanes with a 6-ft right-side shoulder and a 3-ft left-side shoulder. The posted speed is 50 mi/h. Formerly there were 4 access points per mile, but recent development has increased the number of access points to 12 per mile. Before the development, the peak-hour factor was 0.95 and the directional hourly volume...
A four-lane freeway with two lanes in each direction has a measured free-flow speed of 55 mi/hr. The peak-hour factor is 0.80 and there are 6% trucks, 2% buses, and 2% recreational vehicles in the traffic stream. One upgrade is 5% and 0.5 miles long. A traffic engineer has determined that the freeway is operating at capacity on this upgrade during the peak hour. If the peak-hour traffic volume is 3900 vehicles, what value for the driver population adjustment factor...