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Incident impact on the road traffic directly is to cause congestion and delay. Firstly, certainty queuing model combined with variables of four stage duration prediction was employed to develop the incident certainty delay model. And the stochastic delay real-time prediction model was created combining the random distribution characteristics. With the time information when vehicles entered and exited...
Acquiring detailed knowledge of surface treatments effectiveness is required to improve performance-based decisions for allocating resources to preserve and maintain pavements on any road network. Measurement of treatment effectiveness is a complex task that requires historical records of treatments with observations of before and after performance trends. Lack of data is often an obstacle that impedes...
Obstacle detection is a hot topic in intelligent visual surveillance system. This paper proposed an automatic obstacle detection method applying to traffic surveillance, which can be used to prevent the traffic accident. In our framework, the images are captured by the traffic surveillance. The GMM (Gaussian Mixture Model) is taken as a short-term background, and foreground objects are extracted by...
Depending on the characteristics of oversaturated traffic flow, the algorithm based on speed-density model is put forward to estimate the passenger car equivalent (PCE) in this paper. And the consistency of jam density is identified as the equivalent criterion. Utilize PCE to study the influences of various vehicles on oversaturated traffic flow. First of all, this new algorithm is established according...
Left-turn collisions are one of the most common types of traffic accidents at intersections because of the lack of broad vision. Collision warning system provides an effective way to solve the problem, but the poor accuracy of the trajectory prediction module in the collision warning system reduces it reliability. In this paper, we studied the trajectory prediction of left-turn vehicles at T-shaped...
With the global economic development and the amount of cars increased year by year, various problems in traffic management has become increasingly prominent, and the vehicle overrun is one of the main reasons causing vehicle traffic accidents on the highway. A new scheme for vehicle three-dimensional size detection based on laser ranging is proposed in this paper, and a detection system is developed...
Forecasting the vessel traffic flow in the bridge areas is focused on this study. Based on Hybrid Radial Basis Function Neural Network, another novel predictive statistic modeling technique called Enhanced Hybrid Radial Basis Function Neural Network (EHRBF-NN) is proposed in the paper. EHRBF-NN is a flexible forecasting technique that integrates regression trees, particle swarm optimization, with...
Automatic recognition and classification of vehicles provide a theory and data foundation to solve the road charge, transport safety and vehicle overrun issues, etc., which has become an indispensable part of Intelligent Traffic Management. A vehicle recognition system based on laser scanning point cloud data is designed in this paper. With this system we can accurately acquire 3D point cloud data...
Dark-channel prior is a perfect theory to restore the outdoor haze image, but the color distortion is emerged when processing the bright region such as sky. Especially for inland river haze image, there is a large area of sky in image. To solve this problem, an improved dehazing algorithm is proposed in this paper. It first segments the haze image into sky and non-sky region through image segmentation...
The urban expressway network is an important part of the urban transport system which carries huge traffic pressure. It is also the key to the efficiency of the urban transport system. In this paper, the mesoscopic traffic flow models are improved by integrated with variable speed limits strategy to simulate the dynamic of vehicles on urban expressway network. The models include static queuing model,...
The purpose of analysis of conflicts within the urban intersection is to determine the degree of different types of conflicts within the intersection. Currently, the analysis of conflicts within urban intersections considers in general simply the conflicts between motorized vehicles and the influence of non-motorized vehicles and pedestrians is usually ignored. This paper summarizes the research findings...
It is always a hot spot of the brain-computer field to achieve various functions by utilizing electroencephalogram (EEG) to control external equipment. This paper describes a design of an intelligent vehicle control platform based on brain-computer interface (BCI), which obtains EEG through BCI, then simulation model is established by Matlab /Simulink to extract and classify EEG as control command,...
The design of communication infrastructure in cyber physical system (CPS) is of vital importance for proper operations of physical dynamics. In this paper, the scheduling of packet transmission over wireless communication networks in CPS is studied for the purpose of system state stabilization. To measure the effective information amount of different packets, the concept of virtual queue is defined...
In order to solve the target allocation problem in multi-sensor management, we proposed a multi-sensor multitarget allocation method with tracking ability as constraint. Basic idea of the method is to apply ant colony algorithm to efficiency function based on target information gain. According to the simulation results, the multi-sensor multi-target allocation method based on information gain and...
This research aims to investigate the required sample size of probe vehicles that are necessary to report the real-time travel time with a desired statistical accuracy in different traffic conditions on freeways. The corridor studied is SR78-E in the North County of San Diego that connects Oceanside and Escondido. The field data used in this study was collected from PeMS during the period from 0:00...
Handling stability of a vehicle is one of the most important properties of vehicle safety. Compared to a rigid vehicle, an articulated vehicle such as a tractor-semitrailer is a more complicated dynamic system with coupling effect between the tractor and the semitrailer. Mismatch of system parameters, incorrect design or improper operation may lead to a tractor-semitrailer into instable situations...
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