Q/ Find the jam density for the section of road with normal flow (1200 veh/hr) and average space mean speed 60km/hr if you know that the maximum flow is 1800 ?veh/hr
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- Determine the maximum sum of critical volumes that a signalized intersection, with four phases and a cycle length of 120 seconds, can accommodate. Assume that the lost time per phase is equal to 3.5 seconds, and that the saturation discharge headway is equal to 1.9 seconds. Ans: 1,673veh/hrConsider the geometric and traffic characteristics shown below. Approach(Width) North(56 ft) South(56 ft) East(68 ft) West(68 ft) Peak hour Approach Volumes: Left Turn 155 95 190 156 Through Movement 442 395 585 538 Right Turn 172 167 201 210 Conflicting Pedestrian Volumes 900 1,200 1,200 900 PHF 0.95 0.95 0.95 0.95 For the following saturation flows: Through lanes: 1,600 veh/h/ln Through-right lanes: 1,400 veh/h/ln Left lanes: 1,000 veh/h/ln Left-through lanes: 1,200 veh/h/ln Left-through-right lanes: 1,100 veh/h/ln The total cycle length was 262 s. Now assume the saturation flow rates are 10% higher, that is, assume the following saturation flow rates: Through lanes: 1,760 veh/h/ln Through-right lanes: 1,540 veh/h/ln Left lanes: 1,100 veh/h/ln Left-through lanes: 1,320 veh/h/ln Left-through-right lanes: 1,210 veh/h/ln Determine a suitable signal phasing system and phase lengths (in s) for the intersection using the…1.. Please show work and steps. If an approach has a PHF of 0.90 and a counted hourly volume of 800 veh/hr what is the maximum 15-minute volume and peak rate of flow? What is the highest and lowest possible value of PHF? At a given location, the space mean speed is measured as 70 mph and the rate of flow as 2200 pc/h/ln. What is the density at this location for the analysis period? How could you decrease the density by 10%?
- Determine the maximum sum of critical volumes that a signalized intersection, with four phases and a cycle length of 120 seconds, can accommodate. Assume that the lost time per phase is equal to 3.5 seconds, and that the saturation discharge headway is equal to 1.9 seconds. Ans: 1,673 veh/hrQUESTION 12 60 10. 15-min Volumes 75 40 Lane Configurations Y Consider the left turn movement from main street. If the conflicting flow rate is 280 veh/hr, and the critical headway, adjusted for heavy vehicles and grade, is 4.2 seconds, and the follow-up time, adjusted for grade, is 2.29 seco nds, calculate the potential capacity, Cp,4 (veh/h). Provide your answer to the nearest integer. SRCPConsider the geometric and traffic characteristics shown below. Approach(Width) North(56 ft) South(56 ft) East(68 ft) West(68 ft) Peak hour Approach Volumes: Left Turn 165 105 200 166 Through Movement 447 400 590 543 Right Turn 162 157 191 200 Conflicting Pedestrian Volumes 900 1,200 1,200 900 PHF 0.95 0.95 0.95 0.95 For the following saturation flows: Through lanes: 1,600 veh/h/ln Through-right lanes: 1,400 veh/h/ln Left lanes: 1,000 veh/h/ln Left-through lanes: 1,200 veh/h/ln Left-through-right lanes: 1,100 veh/h/ln The total cycle length was 283 s. Now assume the saturation flow rates are 10% higher, that is, assume the following saturation flow rates: Through lanes: 1,760 veh/h/ln Through-right lanes: 1,540 veh/h/ln Left lanes: 1,100 veh/h/ln Left-through lanes: 1,320 veh/h/ln Left-through-right lanes: 1,210 veh/h/ln Determine a suitable signal phasing system and phase lengths (in s) for the intersection using the…
- Problem-5 b, What is the theoretical capacity (in vehicle/hour/lane) of a traffic lane with one way traffic flow at a stream speed of 50 kmph? wwww [Assume the average space gap between vehicles to follow the relation Sg = 0.278 V.t. where 'V' is the stream speed in kmph, 't' is the average reaction time = 0.7 sec, average length of vehicles = 5.0 m]Compute the peak hour factor if the hourly volume of traffic is 1800 vehicles/hour and the highest 15-min. volume is 750. (A) 0.5 B) 0.6 c) 0.4 D) 0.3Problem-5 b, What is the theoretical capacity (in vehicle/hour/lane) of a traffic lane with one way traffic flow at a stream speed of 50 kmph? [Assume the average space gap between vehicles to follow the relation Sg = 0.278 V.t. where 'V' is the stream speed in kmph, 't' is the average reaction time = 0.7 sec, average length of vehicles = 5.0 m]
- For two circulating lane, Conflicting flow rate of 675 pc/hr . find total entry lane capacity.The free flow speed of a portion of the highway is 60 mph and a jam density of 100 veh/mile. Use Greenshield Model. Compute the speed in mph when flow is maximum 30 O 7.75 O 15 O 120QUESTION 13 60 10 15-min Volumes Y 75 40 Lane Configurations SUCP What is the movement capacity of the left turn from the main street if the potential capacity is 1,238 veh/h?