16. A section of a highway is known to have a free-flow speed of 88.5 km/h and a capacity of 3300 veh/h. In a given hour, 2100 vehicles were counted at a specified point along this highway section. Determine the space mean speed of these 2100 vehicles? (17.57 km/h or 70.95 km/h)
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- A section of highway is known to have a free-flow speed of 50mph and a capacity of 3600 veh/h. In a given hour, 2400 vehicles were counted at a specified point along this highway section. If the linear speed-density relationship (greensheild model) applies, what would you estimate the space-mean speed of these 2400 vehicles to be?The median speed of vehicles on a highway segment during rush hour is 40 mph with Cv of 0.2. Assuming lognormal distribution, find the fraction of time the speed will fall below 10 mph? What about greater than 50 mph?During peak hours, 3800 vehicles pass through a certain highway from 9:00 AM to 11:00 AM, withspace mean speed of 20 kph. What is the average space headway per vehicle in meters? Hint:space headway is related to the density
- Data obtained from aerial photography showed nine vehicles on a 720 ft-long section of road. Traffic data collected at the same time indicated an average time headway of 4.2 sec. Determine the following. (a) the density on the highway (in veh/mi) veh/mi (b) the flow on the road (in veh/h) veh/h (c) the space mean speed (in mi/h) mi/hSix vehicles are observed in a 200 m section of a highway. If the average time headway is 4 sec., determine the density of flow (veh/km), flow of traffic (veh/hr) and space mean speed (kph).There are 11 vehicles observed in a 500 m section of a highway. The average time headway is 3 seconds. What is the value of the space mean speed in kph?
- A flow characteristic that is related to the density and obtained from speed data is occupancy. Data obtained from a 6-ft by 6-ft inductive loop detector is used to determine the traffic density. With an occupancy of 9.375%, determine the density, in vehicles per mile, for a mean vehicle length of 27 feet.During peak hours, 3800 vehicles pass through a certain highway from 9:00 AM to 11:00 AM, withspace mean speed of 20 kph. What is the average space headway per vehicle in meters?In 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.
- If 2340 vehicles per hour passes a certain lane of road with average speed of 52kph, determine the appropriate spacing of these vehicles. Answer in meters.Three vehicles are recorded with speeds of 80, 70, and 200 mi/h. Find average time mean speed for these three vehicles to traverse a section of 1 mileData on a traffic accident record on a certain intersection for the past 4 years has an accident rate of 9200 per million entering vehicles (MEV). If the total accident is 802, find the average daily traffic a. 75 b. 60 c. 45 d. 95