14. Free-flow speed of vehicles on a road section is 88 km/h. Jammed density is 228 veh/km. Determine the traffic density on the road if traffic flow is at a maximum level. Also determine the possible maximum flow for the road section and the average speed of vehicles at that maximum traffic flow rate. (114 veh/km, 5016 veh/h, 44 km/h)
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- Assume you are observing traffic in a single lane of McArthur Highway at a specific location. You measure the average headway and average spacing of the vehicles as 3.2sec. and 50 m. respectively. Determine the traffic flow in vehicle/hour.Assume you are observing traffic in a single lane of McArthur Highway at a specific location. You measure the average headway and average spacing of the vehicles as 3.2sec. and 50 m. respectively. Determine the traffic speed in kilometer/hourIn a 500 m section of highway, there are 10 vehicles observed. The time headway is 4 sec. Determine the space mean speed of the vehicles in kph.
- Andeng highway can accommodate speed of 80 kph under free-flowing conditions. On average, front bumper-to-bumper spacing of 1.20m is occuring on the highway such that the flow stops completely. Determine the flow of traffic on Andeng Highway if the average speed of the vehicles is 36 kph. final answer is 16,500The lane of a 2-lane one way carriageway is closed for repairs. The maximum mean free speed under conditions of low flow in the 2-lane portion is 65km/hr. Under conditions of low flow, observations show that the maximum mean free speed in the bottleneck is also 65km/hr. The average space headway when vehicles are stationary is 12.5m. The volume of traffic on the 2-lane road is 1800 veh/hr. Assuming that the speed-concentration relation is linear, find The mean speed of traffic through the bottleneck caused by the closure of one lane; The mean speed of traffic in the congested conditions immediately on the approach to the bottleneck The mean speed of traffic on the carriageway clear of the influence of the bottleneck The rate at which the queue of the congested traffic enter1. The rate flow at a point in the highway is 1200 vehicles/hour. Find the space mean speed in mph if the density of traffic is 25 vehicles per mile 2. Assume you are observing traffic in a single lane of McArthur Highway at a specific location. You measure the average headway and average spacing of the vehicles as 3.2sec. and 50 m. respectively. Determine the traffic speed in kilometer/hour
- Compute the rate of flow in veh/hr if the space mean speed is 35 mph and the density of traffic is 17 veh/km.Determine i) capacity, ii) jam density, iii) speed and iv) density at capacity of a traffic stream if the speed density relationship follows relation v = 17.2 ln(228/k), if v is space mean speed in km/hr and k is the density at veh/km.Q2-4 lanes rural segment of highway with ideal conditions, compute the average head way of vehicles operated at level of service D with free flow speed 100 km/hr, compute the level of service and flow rate (maximum traffic volume ) for operate with free flow speed 120 km/hr ?
- 1. There are 3 vehicles observed in a 100 m section of McArthur highway. If the average time headway is 4 sec., compute the space mean speed of the vehicles in kph. 2. 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 3. If the density of traffic in Aurora Blvd. is 25 veh/km and the average headway is 4 sec., compute the space mean speed in kphThe rate flow at a point in the highway is 1200 vehicles/hour. Find the space mean speed in mph if the density of traffic is 25 vehicles per mileA section of highway has a speed–flow relationship of the form q = au2 + bu, where q is the traffic flow in veh/h, u is the space-mean speed of traffic in mi/h, and a and b are unknown parameters. It is known that at capacity (which is 3100 veh/h) the spacemean speed of traffic is 28 mi/h. Determine the speed when the flow is 1500 veh/h and the free-flow speed.