Searched for:
(1 - 20 of 67)

Pages

document
Knoop, V.L. (author), van Erp, P.B.C. (author), Leclercq, Ludovic (author), Hoogendoorn, S.P. (author)

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
document
Knoop, V.L. (author), Taale, Henk (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
document
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
document
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
makers with models and advice on how to prevent congestion, an increased understanding of queue dynamics is...
conference paper 2018
document
Wierbos, M.J. (author), Knoop, V.L. (author), Hanseler, F.S. (author), Hoogendoorn, S.P. (author)
conference paper 2018
document
van Erp, P.B.C. (author), Thoen, Sebastiaan (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
The fundamental diagram (FD) describes the relation between the flow and density in equilibrium conditions. In this paper, we propose an estimation approach to estimate the FD based on data from moving observers. This approach consists of two main steps: (1) estimate flow and density for space-time areas based on trajectories of moving observers...
conference paper 2018
document
van Erp, P.B.C. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
conference paper 2018
document
Sparnaaij, M. (author), Duives, D.C. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
conference paper 2018
document
Yao, S. (author), Knoop, V.L. (author), van Arem, B. (author)
Lane changes can lead to disturbances in traffic flow, whilst the uneven distribution of traffic over different lanes as a result of lane changes can also lead to instabilities and congestion on one specific lane. Therefore, giving advice on lane change can be beneficial for both individual drivers and traffic state in the network. However,...
conference paper 2017
document
Knoop, V.L. (author), Keyvan-Ekbatani, M. (author), de Baat, Marco (author), Taale, Henk (author), Hoogendoorn, S.P. (author)
Freeways form an important part of the road network. Drivers’ behavior can be split in longitudinal (acceleration and deceleration) and lateral behavior (lane changing). The combination of these two behaviors on freeways play a key role in traffic operations. This paper tries to describe the driving behavior, emphasizing the relation between the...
conference paper 2017
document
Keyvan Ekbatani, M. (author), Gao, X. (author), Gayah, V.V. (author), Knoop, V.L. (author)
Recent findings regarding macroscopic relationships of urban traffic measures such as the Macroscopic or Network Fundamental Diagram (MFD or NFD) have led to the development of novel traffic control strategies that can be applied at a network-wide level. One pertinent example is perimeter flow control (also known as gating or metering), which...
conference paper 2016
document
de Jong, Eveline (author), Baggen, J.H. (author), Knoop, V.L. (author)
Het luchtzijdige wegverkeerssysteem op de luchthaven Amsterdam Airport Schiphol (Schiphol) is een niet-openbaar wegverkeerssysteem dat wordt gebruikt door afhandelaren van de vliegtuigen, bussen voor de passagiers en de ordehandhaving van de luchthaven. Naast een grote verscheidenheid aan voertuigen die we er aantreffen gelden er ook andere...
conference paper 2016
document
Yuan, K. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
Capacity drop indicates that the queue discharge rate is lower than the road capacity. Due to the capacity drop, traffic delays increase once queues form. Researchers find that queue discharge rates vary in different traffic conditions. Empirical data shows that the queue discharge rate increases as the speed in congestion increases....
conference paper 2016
document
Marczak, F (author), Leclercq, Ludovic (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
This paper deals with the derivation of analytical formulae to estimate the effective capacity at freeway merges in a multilane context. It extends two previous papers that are based on the same modeling framework but that are restricted to a single lane on the freeway (or to the analysis of the right lane only). The analytical expression for...
conference paper 2016
document
Zhang, Fan (author), Chen, Y. (author), Goni Ros, B. (author), GAO, Jian (author), Knoop, V.L. (author)
Traffic congestion leads to delays and increased carbon dioxide (CO2) emissions. Traffic management measures such as providing information on environmental route costs have been proposed to mitigate congestion. Multi-criteria routing dynamic traffic assignment (MCR-DTA) models are needed to evaluate the effectiveness of such measures. This paper...
conference paper 2016
document
Knoop, V.L. (author), Tamminga, G.F. (author), Leclercq, Ludovic (author)
Traffic flow can be modelled at different levels, of which the vehicle level and the link level are mostly used. Recently, traffic relationships at a higher, network level are found, and a dynamic traffic flow model has been introduced. This paper tests such a model, the Network Transmission Model (NTM), for the city of The Hague. In this model,...
conference paper 2016
document
Goni Ros, B. (author), Knoop, V.L. (author), Kitahama, K. (author), van Arem, B. (author), Hoogendoorn, S.P. (author)
Sags are bottlenecks in freeway networks. Nowadays, there is a growing interest in the development of traffic management measures for sags based on the use of in-car systems. This contribution determines the movements that individual (equipped) vehicles should make in order to minimise congestion. Specifically, we optimise the accelerations of...
conference paper 2016
document
Keyvan Ekbatani, M. (author), Gao, X. (author), Gayah, V.V. (author), Knoop, V.L. (author)
Traditionally, urban traffic is controlled by traffic lights. Recent findings of the Macroscopic or Network Fundamental Diagram (MFD or NFD) have led to the development of novel traffic control strategies that can be applied at a networkwide level. One pertinent example is perimeter flow control (also known as gating or metering), which limits...
conference paper 2015
document
Keyvan Ekbatani, M. (author), Grebert, V. (author), Daamen, W. (author), Knoop, V.L. (author)
Understanding the influence of lane changing manoeuvre on the capacity, stability, and breakdown of traffic flows is a crucial issue. In a recent study, four distinct lane change strategies on freeways have been empirically found: (1) Speed Leading; (2) Speed Leading with Overtaking; (3) Lane Leading; (4) Traffic Leading. To the best of our...
conference paper 2015
document
Keyvan Ekbatani, M. (author), Papageorgiou, M. (author), Knoop, V.L. (author)
Recent studies demonstrated the efficiency of feedback-based gating control in mitigating congestion in urban networks by exploiting the notion of network fundamental diagram (NFD). The employed feedback regulator of proportional-integral(PI)-type targets an operating NFD point of maximum throughput to enhance the mobility in the urban road...
conference paper 2015
Searched for:
(1 - 20 of 67)

Pages