نتایج جستجو برای: traffic flow

تعداد نتایج: 567686  

2010
Xiaozheng He

Major disruption to a transportation network can disturb traffic flow patterns significantly. To deploy effective and efficient traffic restoration projects, a good prediction of the traffic flow pattern under network disruption is vital. Although traffic flow evolution processes have been modeled in various ways in the literature, very limited attention has been paid to the traffic flow evolut...

Journal: :international journal of environmental research 0
g. zambon university of milano bicocca, italy r. benocci university of milano bicocca, italy g. brambilla istituto di acustica e sensoristica "orso mario corbino", italy

monitoring of road traffic noise is becoming an important issue in modern cities due to the spreading of noise pollution and the extension of monitored areas. thus, the stratified spatial sampling is frequently applied to reduce the costs and provide adequate accuracy in order to obtain reliable noise maps. the definition of the strata in the sampling may refer to the legislative classification...

The core methodology of the Highway Capacity Manual (HCM) 2010 for freeway analyses is based on Free-Flow Speed (FFS). Moreover, weaving segments are major elements of freeway facilities that form where two one-way traffic streams intersect by merging and diverging maneuvers. Hence, this study used three different methods to compute FFS of a ramp-weaving segment, and then employed the proposed ...

2016
Haijing Tang Yu Liang Zhongnan Huang Taoyi Wang Lin He Yicong Du Xu Yang Gangyi Ding

The effect of traffic flow prediction plays an important role in routing selection. Traditional traffic flow forecasting methods mainly include linear, nonlinear, neural network, and Time Series Analysis method. However, all of them have some shortcomings. This paper analyzes the existing algorithms on traffic flow prediction and characteristics of city traffic flow and proposes a road traffic ...

Journal: :CoRR 2016
Yuankai Wu Huachun Tan

Deep learning approaches have reached a celebrity status in artificial intelligence field, its success have mostly relied on Convolutional Networks (CNN) and Recurrent Networks. By exploiting fundamental spatial properties of images and videos, the CNN always achieves dominant performance on visual tasks. And the Recurrent Networks (RNN) especially long short-term memory methods (LSTM) can succ...

2003
Jingang Yi Hao Lin Luis Alvarez Roberto Horowitz

In this paper, second-order macroscopic vehicle traffic flow models are discussed from the perspective of their capability to reproduce stable and unstable traffic flow behaviors observed in real traffic. To achieve this goal, a nonlinear traffic flow stability criterion is derived using a wavefront expansion technique. Qualitative relationships between traffic flow stability and model paramete...

2016
Zhenhua Zhang Qing He Hanghang Tong Jizhan Gou Xiaoling Li

Traffic flow pattern identification, as well as anomaly detection, is an important component for traffic operations and control. To reveal the characteristics of regional traffic flow patterns in large road networks, this paper employs dictionary-based compression theory to identify the features of both spatial and temporal patterns by analyzing the multi-dimensional traffic-related data. An an...

2012
N. Kapileswar M. Sunil Babu

Robust and reliable traffic monitoring system is an urgent need to improve traffic control and management. Vehicle flow detection appears to be an important part in traffic monitoring system. The traffic flow shows the traffic state in fixed time interval and helps to control the traffic. This paper proposes an automatic traffic monitoring system which is used for estimating the important traff...

2009
Alberto Blanc Konstantin Avrachenkov Sara Alouf Georg Post

When the TCP and IP protocols were first proposed the emphasis was on a simple best-effort service. Later on TCP was modified in order to address the issue of congestion control, that is to make sure that the senders would not overwhelm the network by sending data too fast. Over the years these protocols have shown an excellent scalability and have allowed the Internet to grow from a network co...

2017
Minjie Wang Su Yang Yi Sun Jun Gao

People in cities nowadays suffer from increasingly severe traffic jams due to less awareness of how collective human mobility is affected by urban planning. Besides, understanding how region functions shape human mobility is critical for business planning but remains unsolved so far. This study aims to discover the association between region functions and resulting human mobility. We establish ...

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