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Yuan, K. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)On freeways, congestion always leads to capacity drop. This means the queue discharge rate is lower than the pre-queue capacity. Our recent research findings indicate that the queue discharge rate increases with the speed in congestion, that is the capacity drop is strongly correlated with the congestion state. Incorporating this varying...journal article 2017
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Goni Ros, B. (author), Knoop, V.L. (author), Takahashi, Toshimichi (author), Sakata, Ichiro (author), van Arem, B. (author), Hoogendoorn, S.P. (author)Sags are bottlenecks in freeway networks. According to previous research, the main cause is that most drivers do not accelerate enough at sags. Consequently, they keep longer headways than expected given their speed, which leads to congestion in high demand conditions. Nowadays, there is growing interest in the development of traffic control...journal article 2016
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- Goni Ros, B. (author), Knoop, V.L. (author), Shiomi, Y (author), Takahashi, T (author), van Arem, B. (author), Hoogendoorn, S.P. (author) journal article 2016
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Yuan, K. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)The capacity drop indicates that the queue discharge rate is lower than the free-flow capacity. Studies show that queue discharge rates vary under different traffic conditions. Empirical data show that the queue discharge rate increases as the speed in congestion increases. Insights into the underlying behavioral mechanisms that result in such...journal article 2016
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Knoop, V.L. (author), Daamen, W. (author)The fundamental diagram of a road, including free-flow capacity and queue discharge rate, is very important for traffic engineering purposes. In the real word, most traffic measurements come from stationary loop detectors. This paper proposes a method to fit Wu's fundamental diagram to loop detector data. Wu's fundamental diagram is...journal article 2016
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- Leclercq, L (author), Knoop, V.L. (author), Marczak, F (author), Hoogendoorn, S.P. (author) journal article 2016
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- Daganzo, CF (author), Knoop, V.L. (author) journal article 2016
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Knoop, V.L. (author), Tamminga, G.F. (author), Snelder, M. (author)Het Netwerk Transmissie Model is een nieuw dynamisch model dat het verkeer zonegewijs doorrekent. Grote voordeel van die aanpak is de hoge rekensnelheid: in luttele seconden rekent het model een complete spits door. In deze bijdrage vertellen de onderzoekers Knoop, Tamminga en Snelder over de theorie, de principes en de eerste ervaringen.journal article 2015
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Knoop, V.L. (author), Hoogendoorn, S.P. (author)Microscopic and macroscopic dynamic traffic models not fast enough to run in an optimization loop to coordinate traffic measures over areas of twice a trip length (50x50 km). Moreover, in strategic planning there are models with a spatial high level of detail, but lacking the features of traffic dynamics. This paper introduces the Network...journal article 2015
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Yuan, K. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)It has been empirically observed for years that the queue discharge rate is lower than the prequeue capacity. This difference is called the capacity drop. The magnitude of capacity drop varies over a wide range, depending on the local traffic conditions. However, it is unknown what determines the capacity drop value. No thorough empirical...journal article 2015
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Knoop, V.L. (author), van Lint, J.W.C. (author), Hoogendoorn, S.P. (author)Literature shows that–under specific conditions–the Macroscopic Fundamental Diagram (MFD) describes a crisp relationship between the average flow (production) and the average density in an entire network. The limiting condition is that traffic conditions must be homogeneous over the whole network. Recent works describe hysteresis effects:...journal article 2015
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- Immers, B. (author), Taale, H. (author), Hoogendoorn, S.P. (author), Wilmink, I. (author), Van Katwijk, R. (author), Knoop, V.L. (author), Schuurman, H. (author) journal article 2014
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Hoogendoorn, S.P. (author), Knoop, V.L. (author)In deze tutorial bespreken we de nieuwste inzichten op het gebied van netwerkdynamica. En nu eens niet op de traditionele manier, waarbij we proberen om een verkeersnetwerk in al haar detail zo nauwkeurig mogelijk te analyseren, modelleren en simuleren. Nee, in deze bijdrage zullen we juist vanuit vogelperspectief naar de verkeersafwikkeling in...journal article 2013
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Knoop, V.L. (author), Hegyi, A. (author)Met ingang van deze uitgave zal NM Magazine een aantal tutorials over (dynamisch) verkeersmanagement opnemen. Ons doel? Een groter publiek kennis laten maken met de principes van en de wetenschappelijke basis onder verkeersmanagement. In deze eerste bijdrage maken we kennis met de verkeersstroomtheorie. Dr. Victor Knoop en dr. ir. Andreas Hegyi...journal article 2012
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Knoop, V.L. (author), Hoogendoorn, S.P. (author), Van Zuylen, H. (author)This paper investigates to what extent travellers change their route when faced with unexpected traffic situation. To this end, traffic data from days with serious incidents are analysed in this contribution. The flows retrieved from loop detectors on the routes past the incident and on alternative routes are compared with the same values on...journal article 2010
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Knoop, V. (author), Hoogendoorn, S. (author), Adams, K. (author)Incidents cause a large part of the delays in road networks. This is caused by a decrease of the capacity at the incident site. A detailed knowledge of the queue discharge rate can improve for instance the traffic prediction and thereby improve delay information or routing advice. Therefore, this study determines the queue discharge rate for...journal article 2009
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Hoogendoorn, S.P. (author), Landman, R.L. (author), Knoop, V.L. (author), Pel, A.J. (author), Huibregtse, O.L. (author), Hoogendoorn, R.G. (author)Hoe kwetsbaar onze verkeersinfrastructuur is, blijkt wel bij exceptionele omstandigheden. Eén incident (calamiteit of ongeval) en er ontstaat een verkeersinfarct. Kan dit worden voorkomen? Zo ja, hoe dan? Zijn er bruikbare modellen om effecten in te schatten? En hoe staat het met de human factor, welhaast in elke keten de meest kwetsbare schakel...journal article 2009
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Knoop, V. (author), Van Zuylen, H. (author), Hoogendoorn, S. (author)Robustness of a network is a main objective for road network managers these days, and has therefore become an important study area for transportation scientists. This article discusses one specific aspect in assessing road network robustness: the consequences of the closure of a link. These spillback effects have been examined in a dedicated...journal article 2008
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Hulsman, CL (author), Knoop, FAM (author), van der Voordt, Theo (author)Langdurige leegstand van kantoorgebouwen is maatschappelijk en economisch onge-wenst. Herbestemming naar woonfuncties kan een goede oplossing zijn. Onderzoek van de Technische Universiteit Delft wijst uit, dat de overheid en marktpartijen de noodzaak tot stimulering van herbestemming onderschrijven. Integrale gebiedsontwikkeling, fis-cale...journal article 1998