Searched for: author:"Knoop, V.L."
(1 - 20 of 119)

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Wierbos, M.J. (author), Knoop, V.L. (author), Hanseler, F.S. (author), Hoogendoorn, S.P. (author)
Bicycles are gaining popularity as a mode of transport resulting in a mixed bicycle–car traffic situation on urban roads. Cyclists however, are hardly included in traffic flow models which complicates the design of safe and congestion-free traffic situations. This work introduces class-specific speed functions based on two variables, being space...
journal article 2020
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Yuan, K. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
Scarce urban space makes urban streets have to be partly shared by cars and cyclists. Traffic flow can be considerably influenced by cyclists, which are comparatively slower than cars. The fundamental diagram (FD) can change greatly, correlating to bike lane length and the cyclist flow. Models for the traffic dynamics on the space-shared streets...
journal article 2019
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Goni Ros, B. (author), Knoop, V.L. (author), van Arem, B. (author), Hoogendoorn, S.P. (author)
Sags are freeway sections along which the gradient changes significantly from downward to upward. The capacity of sags is considerably lower than the capacity of normal sections. Consequently, sags are often freeway bottlenecks. Recently, several control measures have been proposed to improve traffic flow efficiency at sags. Those measures...
journal article 2019
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Knoop, V.L. (author), Wang, M. (author), Wilmink, Isabel (author), Hoedemaeker, D. Marika (author), Maaskant, Mark (author), Van der Meer, Evert-Jeen (author)
An increasing amount of vehicles are equipped with driver assistance systems; many of the vehicles currently on the market can be optionally equipped with adaptive cruise control and lane centering systems. Using both systems at the same time brings the vehicle to SAE level-2 automation . This means a driver does not need to perform longitudinal...
journal article 2019
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Knoop, V.L. (author), Taale, H. (author), Meulenberg, Michel (author), van Erp, P.B.C. (author), Hoogendoorn, S.P. (author)
Demand exceeding the capacity of a bottleneck will create congestion upstream of that bottleneck. Once this congestion occurs, the maximum flow through this bottleneck decreases (capacity drop). By limiting the flow towards the bottleneck, one can prevent or postpone the capacity drop and the accompanying congestion. In case the bottleneck is...
conference paper 2019
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Nagalur Subraveti, H.H.S. (author), Knoop, V.L. (author), van Arem, B. (author)
Merging areas are a common bottleneck source on motorways. In order to tackle congestion at these locations, efficient traffic management and control is vital to best utilize the available space. However, before the application of any traffic control measures, a thorough analysis of the effectiveness of the designed control action needs to be...
conference paper 2019
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Zhao, J. (author), Gao, Xing (author), Knoop, V.L. (author)
To improve the practical capacity of the continuous flow intersections (CFI)<br/>and eliminate the conflict between left-turn bicycles and through vehicles,<br/>an optimization design method for left-turn bicycles was proposed.<br/>The pre-stop line for through vehicles and the crossing passage for leftturn<br/>bicycles were set at the pre...
journal article 2019
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Wierbos, M.J. (author), Knoop, V.L. (author), Hanseler, F.S. (author), Hoogendoorn, S.P. (author)
Bicycle usage is encouraged in many cities because of its health and environmental benefits. As a result, bicycle traffic increases which leads to questions on the requirements of bicycle infrastructure. Design guidelines are available but the scientific substantiation is limited. This research contributes to understanding bicycle traffic flow...
journal article 2019
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Keyvan-Ekbatania, Mehdi (author), Gaob, Xueyu (Shirley) (author), Gayahb, Vikash V. (author), Knoop, V.L. (author)
Empirical and research evidence suggests that traffic-responsive signal control strategies are generally not as efficient in over-saturated traffic conditions characterized by queue spillbacks. Recent studies on (MFD/NFD) have identified a destabilizing gridlock process that arises in congested networks which precludes efficient operation. The...
journal article 2019
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Knoop, V.L. (author), van Erp, P.B.C. (author), Leclercq, Ludovic (author), Hoogendoorn, S.P. (author)
<br/>The Macroscopic Fundamental Diagram (MFD) describes the relation between accumulation and speed in a zone. While theoretically expected, empirical validations have been done with limited numbers of floating car (e.g., taxi) data, and loop detectors. This paper will verify existence, shape and crispness of the MFD using Floating Car Data ...
conference paper 2019
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Nagalur Subraveti, H.H.S. (author), Knoop, V.L. (author), van Arem, B. (author)
Unbalanced lane usage on motorways might lead to the reduction in capacity<br/>of the motorway. Lane-level traffic management present new opportunities<br/>to balance the lane-flow distribution and help reduce congestion.<br/>In order to come up with efficient traffic management strategies on a<br/>lane-level, there is a need for accurate lane...
journal article 2019
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Gavriilidou, A. (author), Wierbos, M.J. (author), Daamen, W. (author), Yuan, Y. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
Cycling research at the operational behavioral level is limited, mainly because of the lack of empirical data. To overcome this data shortage, we performed a controlled, large-scale cycling experiment in the Netherlands. In this paper we describe the methodology for setting up and implementing such an experiment, from the motivation of its...
journal article 2019
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Sparnaaij, M. (author), Duives, D.C. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
Ideally, a multitude of steps has to be taken before a commercial implementation of a pedestrian model is used in practice. Calibration, the main goal of which is to increase the accuracy of the predictions by determining the set of values for the model parameters that allows for the best replication of reality, has an important role in this...
journal article 2019
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Goni Ros, B. (author), Schakel, W.J. (author), Papacharalampous, Alexandros E. (author), Wang, M. (author), Knoop, V.L. (author), Sakata, Ichiro (author), van Arem, B. (author), Hoogendoorn, S.P. (author)
Sags are roadway sections along which the gradient increases gradually in the direction of traffic. Sags are generally bottlenecks in freeway networks. Previous research suggests that traffic management measures using advanced Adaptive Cruise Control (ACC) systems could reduce congestion on freeways, but little is known about their potential...
journal article 2019
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van Erp, P.B.C. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
This article presents a procedure to estimate the macroscopic traffic state in a pre-defined space-time mesh using relative flow data collected by stationary and moving observers. The procedure consist of two consecutive and independent processes: (1) estimate point observations of the cumulative vehicle number in space-time, i.e., N(x, t),...
journal article 2018
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Jin, C.J. (author), Knoop, V.L. (author), Jiang, Rui (author), Wang, Wei (author), Wang, Hao (author)
For traffic flow models, calibration and validation are essential. Cellular automaton (CA) models are a special class of models, describing the movement of vehicles in discretised space and time. However, the previous work on calibration and validation does not discuss CA models systematically. This study calibrates and validates a stochastic...
journal article 2018
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Knoop, V.L. (author), Daamen, W. (author), Schadschneider, Andreas (author), Seyfried, Armin (author)
contribution to periodical 2018
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Jin, C.J. (author), Knoop, V.L. (author), Li, Dawei (author), Meng, Ling Yu (author), Wang, Hao (author)
In this paper, we discuss the mechanisms for discretionary lane-changing behavior in traffic flow. NGSIM video data are used to check the validity of different lane-changing rules, and 373 lane changes at 4 locations in US-101 highway are analyzed. We find that the classical lane-changing rules of rule-based model cannot explain many cases in...
journal article 2018
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Wierbos, M.J. (author), Goni Ros, B. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
In many countries, an increasing number of people are using the bicycle for urban trips. The increased bicycle flow sometimes creates local congestion at intersections and demands better bicycle traffic management. To provide policy<br/>makers with models and advice on how to prevent congestion, an increased understanding of queue dynamics is...
conference paper 2018
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Wierbos, M.J. (author), Knoop, V.L. (author), Hanseler, F.S. (author), Hoogendoorn, S.P. (author)
conference paper 2018
Searched for: author:"Knoop, V.L."
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