The relation between speed u (in km/h) and density k (number of vehicles / km) for a traffic stream on a road is u = 70-0.7k. The capacity on this road is vph (vehicles/hour).
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- Three cars travel over a 60 m. section of highway at constant speeds of 19, 20 and 25 m/s. Compute the time mean speed for this condition in m/s (two decimal places).The rate of flow at a certain point in the highway is 676.2 vehicles per hour. If the density is 14 vehicles per kilometer, find the space mean speed in miles per hour. a. 30 mph b. 45 mph c. 25 mph d. 35 mphOn a road, the speed - density relationship of a traffic stream is given by u = 70 - 0.7 k (where speed, u, is in km/h and density, k, is in veh/km). At the capacity condition, the average time headway will be
- Determine the density of traffic on a highway for free flow speed of 80 km/hr and flow rate of 1200 pc/hr/ln1.) From the traffic studies performed along a street shows the distances each vehicle traveled every 3 seconds on a portion of the highway. Vehicle Distance, m 1 82.6 2 89.9 3 84.6 4 82 a.compute the space mean speed of the traffic, in kph.b.compute the flow of traffic.c.compute the density of traffic.Find the average speed that a passenger car should travel in a certain expressway if the spacing of the cars moving in the same lane is 50m, bumper to bumper. The volume of traffic at this instant is 2000 vehicles per hour.
- The cars travel over a 60m section of highway at constant speeds of 19, 20,and 25 m/s. a. Compute the time mean speed.b. Compute the space mean speed.The average speed of vehicles is 60 kph with the driver’s reaction time at 0.6 sec. If the average length of vehicles is 6 m. Determine the following: a.) spacing of vehicles. b.) density c.) capacitythe average spacing of vehicles in a single highway is 50m center to center. The average speed of the cars us 30 kph. determine the volume if traffic in vehicles per hour.
- When crossing an intersection, a motorcyclist encounters the slight bump or crown caused by the intersecting road. If the crest of the bump has a radius of curvature, ? = 25 meters, determine the maximum constant speed at which he can travel without leaving the surface of the road. Neglect the size of the motorcycle and rider in the calculation. The rider and his motorcycle have a total weight 3.5 kN.An automobile A travelling at a constant velocity of 45 ft/s passes a gasoline station. After 2 seconds, another automobile B leaves the gasoline station and accelerates at the constant rate of 6 ft/s2. How long will the second automobile overtakes the first?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. can you explain how to solve thank you