Searched for: faculty%3A%22Civil%255C%252BEngineering%255C%252Band%255C%252BGeosciences%22
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- Goni Ros, B. (author), Knoop, V. (author), Van Arem, B. (author), Hoogendoorn, S.P. (author) conference paper 2012
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Knoop, V.L. (author), Van Lint, J.W.C. (author), Kester, L. (author), Passchier, I. (author), Vries, J. (author)Congestion is a major problem in large urbanised areas. Intelligent Transport Solutions aim to reduce this problem. Generally, traffic is monitored using sensors, this data is processed, a traffic state is estimated and a control measure is computed and implemented. The availability and quality of the data and the processing time of the...conference paper 2012
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- Knoop, V.L. (author), Buist, P.J. (author), Tiberius, C.C.J.M. (author), Van Arem, B. (author) lecture notes 2012
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- Goni Ros, B. (author), Knoop, V.L. (author), Van Arem, B. (author), Hoogendoorn, S.P. (author) conference paper 2012
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Knoop, V.L. (author), Hoogendoorn, S.P. (author), Van Lint, J.W.C. (author)An excess number of vehicles in a traffic network will reduce traffic performance. This reduction can be avoided by traffic management. In particular, traffic can be routed such that the bottlenecks are not oversaturated. The macroscopic fundamental diagram provides the relation between the number of vehicles and the network performance. One can...conference paper 2012
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Knoop, V.L. (author), Hoogendoorn, S.P. (author), Shiomi, Y. (author), Buisson, C. (author)Lane changes are an important aspect of freeway flow. Most lane change models are microscopic, describing whether individual vehicles/drives will change lanes, and hence are calibrated microscopically. Macroscopic validation often is restricted to the distribution of vehicles across lanes. To the best of our knowledge, no systematic analysis has...conference paper 2012
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Knoop, V.L. (author), Hoogendoorn, S.P. (author), Shiomi, Y. (author), Buisson, C. (author)Since lane changes influence traffic operations, it is useful to know their frequency for various conditions. This paper studies the number of lane changes as function of the roadway characteristics. Two sites are studied, for which individual lane change data is available. The paper shows that the most constant measure is the lane change rate,...conference paper 2012
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Knoop, V.L. (author), Hoogendoorn, S.P. (author), Shiomi, Y. (author), Buisson, C. (author)Lane changes are an important aspect of freeway flow. Most lane change models are microscopic, describing whether individual vehicles/drives will change lanes, and hence are calibrated microscopically. Macroscopic validation often is restricted to the distribution of vehicles across lanes. To the best of our knowledge, no systematic analysis has...conference paper 2012
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- Schakel, W.J. (author), Knoop, V.L. (author), Van Arem, B. (author) conference paper 2012
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Knoop, V.L. (author), Van Lint, J.W.C. (author), Hoogendoorn, S.P. (author)With current techniques, traffic monitoring and control is a data intensive process. Network control on a higher level, using high level variables, can make this process less data demanding. The macroscopic fundamental diagram relates accumulation, i.e. the number of vehicles in an area, to the network performance, but only holds for situations...conference paper 2011
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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.L. (author), Hoogendoorn, S.P. (author), van Arem, B. (author) conference paper 2010
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- Knoop, V.L. (author), Bell, M.G.H. (author), Van Zuylen, H.J. (author) conference paper 2010
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Knoop, V.L. (author), Hoogendoorn, S.P. (author), Van Zuylen, H.J. (author)The duration of incidents is a stochastic variable with a variation spread. This chapter analyzes the consequences of this stochastic nature of the duration in terms of delay. It uses shockwave theory to describe traffic states. As opposed to a point queue model, the head and the tail of the queue are separately modeled and in this way the...conference paper 2010
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Knoop, V.L. (author), Hoogendoorn, S.P. (author), Van Zuylen, H.J. (author)The delay caused by an incident depends on many variables. This paper introduces an analytical expression for the delay, describing the location and length of the queue by shockwave theory. As long as the congestion remains on the same link, delay is proportional to the square of the duration, even in case the outflow is reduced by a junction...conference paper 2010
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Knoop, V.L. (author), Snelder, M. (author), Van Zuylen, H.J. (author), Hoogendoorn, S.P. (author)Literature proposes link-based indicators as predictors of the delay caused by a blockade on a particular link. This paper cross-compares these indicators and compares them with the result of a full simulation. The indicators predict different links to be vulnerable. Furthermore, the indicators do not provide a good indication of the delay of a...conference paper 2010
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Knoop, V.L. (author), Snelder, M. (author), Van Zuylen, H.J. (author), Hoogendoorn, S.P. (author)It is computationally expensive to find out where vulnerable parts in a network are. In literature a variety of methods were introduced that use relatively simple selection criteria (measured in real-life or calculated in a traffic simulator) to pre-determine the seriousness of the delays caused by the blocking of that link and thereafter...conference paper 2010
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Knoop, V.L. (author)Incidents cause a large part of the congestion on the road. This PhD study describes how people change their behaviour when facing an incident situation. It is found that car-following behaviour changes and drivers react slower on their predecessors. Furthermore, it is found that drivers change their route when facing unexpected delay caused by...doctoral thesis 2009
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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
Searched for: faculty%3A%22Civil%255C%252BEngineering%255C%252Band%255C%252BGeosciences%22
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