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In order to improve the Vehicle Weigh in Motion System with precision, the paper introduces Nerve Net Algorithm to error analysis. The article sets up a neural network model by determining the neural network input and output variables. Then, the function is defined by net training on MATLAB software. Finally through the experimental verification of Nerve Net Algorithm improving Weigh in Motion System...
Former research of transport reliability focuses on road network, few of which refer to the intersection traffic reliability in microcosmic level. The paper proposes the conception of traffic reliability based on which the supply-demand reciprocity is analyzed, and brings forward the methodology that the disabled condition should be differentiated according to distinct system functions. Aiming at...
Firstly the necessity of the design of signal coordination control system in urban main roads is presented , and the design thinking and process of the signal coordination control system is given, then according to the design thinking and process create a model of signal coordination control system in urban main road., and Qingyang Road of LAN Zhou City is taken for example, based on the survey data...
Supposed the perception of traffic information and the controlling decision of vehicles are correct. The delay of controlling actions is researched in the paper, and the function of driver non-response probability is advanced. Based on the function, the timing curve of divers' response is made. Then the risk model of Rear-ends accidents is established to evaluate the probability of Rear-end accident,...
According to the randomness and weak economy properties of the Emergency Rescue Routing Problem (ERRP), a chance-constrained programming model is constructed based on a stochastic road network. In this model, we consider there are multiple emergency rescue departments serving for a single emergency site, and the travel times between any two nodes are stochastic variables. As the stochastic ERRP is...
Measuring control delay at signalized intersections accurately is very important for designing and operating traffic control systems. At present, we usually maintain control delay through observing on the spot or model calculating. However, the control delays obtained by these methods are not accurately and in real time. In the recent years, the development of vehicle infrastructure integration system...
Traffic signal is a measure of traffic command, which distributes right of way to the traffic flow in time domain. Through comparative study between RBF network and BP network, this paper has selected RBF network to control the traffic single. Green Light Interval is decided by the measurement parameters of detector in the actuated signal control. In the usually, the time phase number of the system...
The text posed a brand new counting method of using infrared which was distinct to the normal usage in the product line. By adopting the infrared lattice and the appropriate recognition algrithom, the MCU is able to detect the status of traffic flow in complicated circumstance, easily and economically. All this enables to improve the real time information of traffic condition, furthter to instruct...
Electronic maps on current car navigation system is updated after surveying works, generating and editing map data when a road is newly opened to traffic. Therefore, long time is needed to update the map is completed. Also, online map updating service is now available, however, only expressways and highways are reflected for the map updating since surveying works and editing maps by hand is needed...
In the growth of population in world, people use vehicles like sedan and lorry to meet their comfort and necessity. This lead to heavy traffic, pollution etc. at the same time there is increase in traffic violation. In order to detect the violation by the driver, we have designed a tool. This tool is employed in the toll booth, so that it will monitor the vehicles which are moving. If any vehicle...
Safe road journey is necessary to every human being. Utilisation of private vehicles-two wheelers, four wheelers, school buses, vans, college buses, industrial vehicle, public transport-MTC bus, Commercial vehicles, water lorries, sand lorries, restaurant vehicles, vegetables and milk vans are increasing in manifold every day in Tamilnadu in particular Chennai metropolitan and sub-urban. A road transport...
In this paper, we propose a system that automatically detects and recognizes road signs found in the United States, in real time or close to real-time. The proposed system has application to intelligent autonomous unmanned vehicles for urban surveillance and rescue. It is a multi-layered hierarchical scheme composed of 3 parts: road sign color segmentation, shape recognition, and classification. The...
Traffic congestion has become a major problem in today's society. It may cause a great waste of material and human casualties. We think the fixed-time-state traffic light control scheme is one important reason. An intelligent traffic light control scheme is necessary in order to give a solution to this problem. The paper proposes a model to describe a road cross. In terms of dynamic and real-time...
The rapid development of economy promotes the acceleration of urbanization, but in many cities, especially in the medium-sized city, traffic problem has become the bottleneck of restricting the development.This paper analyses the causes of the medium-sized city traffic accidents and existing problems of the road planning, construction, road traffic management ,and proposed herein with measures for...
The concentrations of BTEX (Benzene, Toluene, m,p -xylenes and o-xylene) were monitored at roadsides of three kinds of urban road (open road, cross road and street canyon) in Beijing during 2008-2009. Each sampling was taken with the change of traffic volume at 7:30, 11:30, 14:30 and 17:30. Air samples were pre-concentrated on Tenax-TA tubes, which were analyzed by a GC system coupled with FID in...
In order to improve the efficiency of the expressway and solve the problem of traffic congestion, this paper introduces the HOV lanes, and a comprehensive evaluation model for HOV lanes was established with the analytic hierarchy process taking into account the facts such as the efficiency of transport operations, resources and environment, and economic and financial. Specific road section was selected...
Vehicle routing problem is an important combinatorial optimization problem. It has an important position in logistics optimization and supply chain management theory. Due to traffic flow, traffic incidents and other factors, the travel speed and travel time of road has large time-variability and randomness in real transport network. The study of vehicle routing problem in time-dependent network has...
This paper analyzes the time, lane and direction distribution characteristics of volume and speed, based on data survey, aimed at the section on urban arterial street near the school in Huhhot. The research results show that there is a peak traffic which begins school close time and continues 15 minutes at noon. Near the primary school, the main factors causing traffic congestion are parking on driveway,...
Relating the microscopic parameters to the macroscopic characteristics of traffic flow by mechanism deduction can make the calibration of the microscopic parameters conveniently and efficiently. The corresponding researches of the steady state flow have been reported in the literature. However, as the steady states are easy to be broken by disturbances and other factors, the actual traffic flow is...
Overspeed is a major factor causing road traffic accidents in China. Since the early 1980s, researchers have developed various algorithms to extract speed information from traffic image sequences. In this paper, an algorithm is proposed to evaluate the speed of the accident vehicle by videos. With human interaction, control points are refined by corner detector and then used for two-dimension geometric...
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