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5- A basic freeway has 3 lanes in each direction and is on flat terrain. It has a jam density of 190 veh/km and a capacity of 4750 veh/h. The spot speed of 5 cars was collected at the midpoint of a 3.4 km segment of this freeway. Vehicle Speed (km/hr) 1 86 2 89 3 95 4 5 99 100 a) Calculate the space mean speed b) Calculate the free flow speed based on the given information c) A directional weekday peak-hour volume of 4640 vehicles is observed, with 1320 vehicles arriving in the most congested 15-min period. If the traffic stream has 12% large trucks and buses determine the level of service 6- What are the steps that a 4-step model used to predict travel demand on roads network consists of? Briefly describe was sort of information each step provides? 7- The bitumen is a conventional bituminous binder has a penetration index of -1 and = 65°c. T800 pen a) Determine the stiffness modulus of this bitumen if the operating conditions are as follows: temperature of 25°c and loading time of 0.04 seconds. Show how you got the numbers on the graph b) Determine the modulus of asphalt mixture if the volume of bituminous binder is 10% and the volume of mineral aggregates is 85%. Show how you got the numbers on the graph

5- A basic freeway has 3 lanes in each direction and is on flat terrain. It has a jam density of 190 veh/km and a capacity of 4750 veh/h. The spot speed of 5 cars was collected at the midpoint of a 3.4 km segment of this freeway. Vehicle Speed (km/hr) 1 86 2 89 3 95 4 5 99 100 a) Calculate the space mean speed b) Calculate the free flow speed based on the given information c) A directional weekday peak-hour volume of 4640 vehicles is observed, with 1320 vehicles arriving in the most congested 15-min period. If the traffic stream has 12% large trucks and buses determine the level of service 6- What are the steps that a 4-step model used to predict travel demand on roads network consists of? Briefly describe was sort of information each step provides? 7- The bitumen is a conventional bituminous binder has a penetration index of -1 and = 65°c. T800 pen a) Determine the stiffness modulus of this bitumen if the operating conditions are as follows: temperature of 25°c and loading time of 0.04 seconds. Show how you got the numbers on the graph b) Determine the modulus of asphalt mixture if the volume of bituminous binder is 10% and the volume of mineral aggregates is 85%. Show how you got the numbers on the graph

Traffic and Highway Engineering
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter9: Capacity And Level Of Service For Highway Segments
Section: Chapter Questions
Problem 21P
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5- A basic freeway has 3 lanes in each direction and is on flat terrain. It has a jam density of 190 veh/km and a capacity of 4750 veh/h. The spot speed of 5 cars was collected at the midpoint of a 3.4 km segment of this freeway. Vehicle Speed (km/hr) 1 86 2 89 3 95 4 5 99 100 a) Calculate the space mean speed b) Calculate the free flow speed based on the given information c) A directional weekday peak-hour volume of 4640 vehicles is observed, with 1320 vehicles arriving in the most congested 15-min period. If the traffic stream has 12% large trucks and buses determine the level of service 6- What are the steps that a 4-step model used to predict travel demand on roads network consists of? Briefly describe was sort of information each step provides? 7- The bitumen is a conventional bituminous binder has a penetration index of -1 and = 65°c. T800 pen a) Determine the stiffness modulus of this bitumen if the operating conditions are as follows: temperature of 25°c and loading time of 0.04 seconds. Show how you got the numbers on the graph b) Determine the modulus of asphalt mixture if the volume of bituminous binder is 10% and the volume of mineral aggregates is 85%. Show how you got the numbers on the graph
Transcribed Image Text:5- A basic freeway has 3 lanes in each direction and is on flat terrain. It has a jam density of 190 veh/km and a capacity of 4750 veh/h. The spot speed of 5 cars was collected at the midpoint of a 3.4 km segment of this freeway. Vehicle Speed (km/hr) 1 86 2 89 3 95 4 5 99 100 a) Calculate the space mean speed b) Calculate the free flow speed based on the given information c) A directional weekday peak-hour volume of 4640 vehicles is observed, with 1320 vehicles arriving in the most congested 15-min period. If the traffic stream has 12% large trucks and buses determine the level of service 6- What are the steps that a 4-step model used to predict travel demand on roads network consists of? Briefly describe was sort of information each step provides? 7- The bitumen is a conventional bituminous binder has a penetration index of -1 and = 65°c. T800 pen a) Determine the stiffness modulus of this bitumen if the operating conditions are as follows: temperature of 25°c and loading time of 0.04 seconds. Show how you got the numbers on the graph b) Determine the modulus of asphalt mixture if the volume of bituminous binder is 10% and the volume of mineral aggregates is 85%. Show how you got the numbers on the graph
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