Capacity drop: A relation between the speed in congestion and the queue discharge rate

Research output: Contribution to conferencePosterScientific

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Abstract

It has been empirically observed for years that the queue
discharge rate is lower than the pre-queue capacity. This is
called the capacity drop. The magnitude of capacity drop varies over a wide range depending on the local traffic conditions. However, up to now it is unknown what determines the capacity drop value. In fact, there is still no thorough empirical analysis revealing a reliable relation between the congestion level and the capacity drop. This paper tries to fill in the gap by revealing the relation between the vehicle speed in congestion and the queue discharge rate
through empirical analysis. The queue discharge rate is shown to increase considerably with increasing speed in the congestion. This finding indicates a promising speed-control scheme for increasing queue discharge rates.
Original languageEnglish
Number of pages2
Publication statusPublished - 2015
EventTransportation Research Board 94th annual meeting - Washington, United States
Duration: 11 Jan 201515 Jan 2015

Conference

ConferenceTransportation Research Board 94th annual meeting
CountryUnited States
CityWashington
Period11/01/1515/01/15

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