منابع مشابه
The Fundamental Diagram of Pedestrian Movement Revisited
The empirical relation between density and velocity of pedestrian movement is not completely analyzed, particularly with regard to the ‘microscopic’ causes which determine the relation at medium and high densities. The simplest system for the investigation of this dependency is the normal movement of pedestrians along a line (single-file movement). This article presents experimental results for...
متن کاملComparison of Pedestrian Fundamental Diagram across Cultures
The relation between speed and density is connected with every self-organization phenomenon of pedestrian dynamics and offers the opportunity to analyze them quantitatively. But even for the simplest systems, like pedestrian streams in corridors, this fundamental relation isn’t completely understood. Specifications of this characteristic in guidelines and text books differ considerably reflecti...
متن کاملDerivation of a Fundamental Diagram for Urban Traffic Flow
Despite the importance of urban traffic flows, there are only a few theoretical approaches to determine fundamental relationships between macroscopic traffic variables such as the traffic density, the utilization, the average velocity, and the travel time. In the past, empirical measurements have primarily been described by fit functions. Here, we derive expected fundamental relationships from ...
متن کاملHysteresis phenomena of a Macroscopic Fundamental Diagram in freeway networks
0965-8564/$ see front matter 2011 Elsevier Ltd doi:10.1016/j.tra.2011.04.004 ⇑ Corresponding author. Tel.: +41 21 69 32481; fa E-mail address: [email protected] (N. G Observations of traffic pairs of flow vs. density or occupancy for individual locations in freeways or arterials are usually scattered about an underlying curve. Recent observations from empirical data in arterial networ...
متن کاملFundamental Diagram Modelling from NGSIM Data
This paper is to investigate lane-wise flow-density (or equivalently speed-density) relationship which is generally called Fundamental Diagram (FD) over a stretch of homogeneous freeway section using the microscopic NGSIM data (Alexiadis, 2004). Particularly, it investigates how a homogenous traffic breakdown through data analysis and modeling. The breakdown of a homogenous traffic is understoo...
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ژورنال
عنوان ژورنال: Environment and Planning B: Urban Analytics and City Science
سال: 2017
ISSN: 2399-8083,2399-8091
DOI: 10.1177/2399808317724445