Speedometer readings for a vehicle (in motion) at 4-second intervals are given in the table. t (sec) 0 4 8 12 16 20 24 v (ft/s) 0 5 17 31 39 38 28 Estimate the distance traveled by the vehicle during this 24-second period using L6, R6 and M3. L6 =  R6= M3=

Assume you are observing traffic in a single lane of a highway at a specific location. You measure the average headway and average spacing of passing vehicles as 3.2 seconds and 20 m, respectively. Calculate the flow, average speed, and density of the traffic stream in this lane.