5-1. A volume of 1,200veh/h is observed at an intersection approach. Find the peak rate of flow within the hour for the following peak-hour factors: 1.00,0.90,0.80,0.70. Plot and comment on the results. 5-2. A traffic stream displays average vehicle headways of 2.4s at 55mi/h. Compute the density and rate of flow for this traffic stream. 5-3. A freeway detector records an occupancy of 0.26 for a 15 -minute period. If the detector is 3.5ft long, and the average vehicle has a length of 18ft, what is the density implied by this measurement