


20. A segment of eight lane urban freeway experiences a breakdown that blocks two lanes completely for a period of one hour in the peak direction. The breakdown occurs at 9:00 AM and is cleared b...
17. A freeway facility has a capacity of 4500 veh/h. During a typical morning peak period, the actual demand flow rate arriving at the facility is given below. Using the information provided, (a) Draw the demand versus the capacity curve for the freeway facility [7 Points] (b) Maximum length of queue [3 Points] Time Demand (veh/h) 3500 4500 5500 6000 4500 4000 3500 7:00 AM-7:30 AM 7:30 AM-8:00 AM 8:00 AM-8:30 AM 8:30 AM-9:00 AM 9:00 AM- 10:00 AM 10:00...
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...