Lane-Change Maneuvers Consuming Freeway Capacity

B. Coifman (), S. Krishnamurthy () and X. Wang ()
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B. Coifman: The Ohio State University, Department of Civil and Environmental Engineering and Geodetic Science
S. Krishnamurthy: The Ohio State University, Department of Civil and Environmental Engineering and Geodetic Science
X. Wang: The Ohio State University, Department of Civil and Environmental Engineering and Geodetic Science

A chapter in Traffic and Granular Flow ’03, 2005, pp 3-14 from Springer

Abstract: Summary Conventional traffic flow theory dictates that flow on a freeway is usually constrained only by a small number of critical locations or bottlenecks. When active, these bottlenecks cause queues that can stretch for several miles and reduce flow on other parts of the network. Bottlenecks are often thought to arise over short distances and are usually modeled as if they occur at discrete points since the resulting queues are thought to be much longer then the bottleneck region. This paper presents evidence that the delay causing phenomena may actually occur over extended distances. Some of which may occur downstream of the apparent bottleneck where drivers are accelerating away from the queue, while related phenomena are observed in the queue, over a mile upstream of the apparent bottleneck. It is shown that lane change maneuvers are responsible for some of the losses, reducing travel speed and consuming capacity when vehicles enter a given lane. These losses in one lane are not fully balanced by gains in other lanes.

Keywords: freeway traffic; traffic flow theory; bottlenecks; congestion (search for similar items in EconPapers)
Date: 2005
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-540-28091-0_1

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DOI: 10.1007/3-540-28091-X_1

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