Question-4: Speed-flow-density relationships of a particular site has resulted in the model U = 68.3(1-10) Where...
5. Traffic on Route 15 south of Selinsgrove was observed at two different times. The first observation found a flow rate of 1,863 vehicles per hour per lane and a density of 85 vehicles per mile. The second observation found a flow rate of 1,050 vehicles per hour per lane and a density of 25 vehicles per mile. Using this data, compute the following: a. For both observations, determine the vehicle speed [mph] and the time headway [sec] b. If...
2. Studies show that on a specific northbound section of a highway the speed-density relationship is: u= u(1-(k/k;) -5) The highway's capacity is 3800 veh/h and the jam density is 140 veh/mi. What is the speed of the traffic at capacity, and what is the free-flow speed?
-B- A study of freeway flow at a particular site has resulted as follows: q = 40D(2 -0.01D) - Determine a- The Capacity, critical speed, critical density, b- Average and minimum spacing and headway.
3. What are the two microscopic traffic stream parameters? 4. In speed-flow-density relationships, we use which speed? (space mean speed)/ (time mean speed) 5. Time headway is the time difference between bumpers/rear bumpers 6. The speed limit on a highway is set based on 85a percentile speed. True /False 7. You should be able to identify the following basic q-u-k relationships (shape), what's on x and what's on y, and salient points on the curves. of two successive vehicles. Front...