One lane of 2-lane carriage of a highway is closed for repairs, thefree flow speed in the 2-lane portion of highway is 70 km/hr ,theobservation showed that the free flow speed in the bottleneck section isalso 70 km/hr. the space head way of vehicles in stationary condition is10 m. if the traffic volume is 2000 veh/hr. find the following?(assume linear relationship between speed and density).The mean speed of the traffic immediately before bottleneck section.The mean speed of the traffic at a distance clear from the influence ofbottleneck.Find the queue length of vehicles after 30 minutes from the beginningof repair operation.

Free flow speed: Vf=70 km/h Space headway: Hs=10 m Traffic volume: q=2000 veh/hr The mean speed of…

One lane of 2-lane carriage of a highway is closed for repairs, the free flow speed in the 2-lane portion of highway is 70 km/hr ,the observation showed that the free flow speed in the bottleneck section is also 70 km/hr. the space head way of vehicles in stationary condition is 10 m. if the traffic volume is 2000 veh/hr. find the following? (arsume linear relationship between speed and density). The mean speed of the traffic immediately before bottleneck section. The mean speed of the traffic at a distance clear from the influence of bottleneck. Find the queue length of vehicles after 30 minutes from the beginning of repair operation.

One lane of 2-lane carriage of a highway is closed for repairs, the free flow speed in the 2-lane portion of highway is 70 km/hr ,the observation showed that the free flow speed in the bottleneck section is also 70 km/hr. the space head way of vehicles in stationary condition is 10 m. if the traffic volume is 2000 veh/hr. find the following? (arsume linear relationship between speed and density). The mean speed of the traffic immediately before bottleneck section. The mean speed of the traffic at a distance clear from the influence of bottleneck. Find the queue length of vehicles after 30 minutes from the beginning of repair operation.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter3: Characteristics Of The Driver, The Pedestrian, The Bicyclist, The Vehicle, and The Road

Section: Chapter Questions

Problem 10P

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Concept explainers

Capacity and Level of Service at Intersections

The term capacity is associated with transportation engineering. Capacity helps to understand how many pedestrians or vehicles can be handled by a transport facility. Level of service is also a term associated with transportation engineering. The level of service indicates the performance of the transport facility.

Question

One lane of 2-lane carriage of a highway is closed for repairs, the
free flow speed in the 2-lane portion of highway is 70 km/hr ,the
observation showed that the free flow speed in the bottleneck section is
also 70 km/hr. the space head way of vehicles in stationary condition is
10 m. if the traffic volume is 2000 veh/hr. find the following?
(assume linear relationship between speed and density).
The mean speed of the traffic immediately before bottleneck section.
The mean speed of the traffic at a distance clear from the influence of
bottleneck.
Find the queue length of vehicles after 30 minutes from the beginning
of repair operation.

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Q2: One lane of 2- lane carriage of highway is closed for repairs, the free flow speed in the 2- lane portion of highway is 60 km/ hr, the observation showed that the free flow speed in the bottleneck section is also 60 km/ hr. The space headway of vehicles in stationary condition is 12.5 m. If the traffic volume is 1600 veh/ hr. Find the following (assume linear relationship between speed and density). 1. The mean speed of the traffic immediatley before the bottleneck section. 2. The queue length of vehicles after 30 minutes from the beginning of repair operation.
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