The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A self-certified implicit certificate has desirable features which are suitable for use in constrained environments such as in vehicular communication networks. An implicit certificate is shorter in length than an explicit certificate. A self-certified implicit certificate scheme allows a user to generate its private key and the associated public key. It is also desirable in vehicular communication...
Today, the technology of RFID is not exploited to the maximum in automobile sector. There is no system that helps in tracing back the motion history of vehicles in case of a collision. This system provides a solution to this shortcoming thereby facilitating effective investigation over the pre-collision scenario. By storing the subsequent records of path taken using Tag Node Position (TNP) and the...
In order to make a conventional unicycle useable for everybody there are two steps of modification necessary. First a proper stabilization in sideways directions and a good steering-ability requires a broad air-filled rubber wheel. Secondly a high-dynamical electric drive system guarantees the automatically stabilization in forward and backward directions. A gravity control places the centre of gravity...
From the perspective of complex adaptive system, we propose an agent-based new energy vehicles diffusion model to develop a platform to simulate diffusion of vehicles and stations, then, we take advantage of evolution algorithm as well as scenario analysis algorithm. In the case of Shanghai, both hydrogen vehicle drivers and hydrogen retails are agents. By interacting with each other in pre-set road...
ITS (Intelligent Transport System), which connects people, vehicles and roads by information and communication technologies, has been drawing much attention these days. Telematic services, in particular, have been deployed by domestic as well as foreign automobile companies in various ways. However, in most cases their services are intended to support drivers themselves. In the meantime, provision...
“Smart” vehicles of the future are envisioned to aid their drivers in reducing fuel consumption and emissions by wirelessly receiving phase-shifting information of the traffic lights in their vicinity and computing an optimized speed in order to avoid braking and acceleration maneuvers. Previous studies have demonstrated the potential environmental benefit in small-scale simulation scenarios. To assess...
Along with the economic development, cities are increasingly congested in China. In order to eliminate peak-hour congestion, many cities establish priority lanes such as bus lanes and Olympic lanes. Although priority lanes could help Local Authorities gain its short-term management objectives, at the same time, it would greatly infringe on the legitimate rights of other vehicles and waste the scarce...
In vehicular ad hoc networks (VANET), Inter-Vehicle real-time information access and transfer is the key problem to solving or reducing traffic accidents. It is possible to locate and track a vehicle based on its transmissions, during communication with other vehicles or the road-side infrastructure. On the basis of vehicle active safety technology, this paper proposed a new message broadcast mechanism...
A high accident potential exists at high-speed signalized intersections where an area close to an intersection, called a dilemma zone (also known as decision zone). The potentially negative impact of dilemma zones on the operational capacity and safety of signalized intersections, has motivated a great deal of effort to the mitigation of the dilemma zone issue. This mitigation system have been pursued...
Highway alignment design should make alignments continuous and keep the index balance in order to ensure the security and comfort of the vehicles traveling at a high speed. Alignment-index value of Highway in plain area usually relatively higher. The current standard is based on the method of design-speed from the theory of alignment design which the index is usually given a much looser value scope...
A serious highway accident with long duration will lead to a great delay. If the extended travel time is beyond travelers' tolerance, they will make a detour by choosing any other roads. However, the driver's behavior of taking other routes will make an impact on the surrounding road network. Thus that impact is called the indirect impact by highway traffic accidents in road network. The range of...
Since 2003, the Chinese government has taken a series of targeted policies and measures to suppress road accidents. In recent years, in the case of the rapid economic development, rapidly growing motor vehicle amount, and changes greatly in road safety environment, China successfully achieved the objectives that road accidents from the peak to be suppressed, until to the decline year-by-year. The...
Along with the continual improvement of rural residents' living conditions, the passenger transport demand grows increasingly. However, the present backward vehicles, the traffic mode, the supervision system and the rural residents' consciousness of traffic safe can not adapt to the realistic demand of safe transportation under the current rural road condition; which makes traffic accidents show a...
In the USA, a supervisor accompanies a driver during drivers-licensing road test to evaluate the driver's performance. The work in this paper envisions a system in which the supervisor can be replaced by a decision-making system, and proposes a controller for such application. By using the device proposed in this paper, the need for another person to accompany the driver can possibly be avoided, thus...
Based on the NS Model, a mixed traffic flow on single lane is simulated in the paper, which includes two-classification vehicles owing the different max-velocity, and a chaos recognition algorithm based on composite feature is advanced. How the traffic flow is changed for different density and different discrete degree and which channel is the right way to chaos is researched. And the influence of...
Road safety audit and speed management concepts have been accepted as valuable tools for traffic safety. These two new concepts have been separately applied successfully in some projects in recent years in China. Form the aspect of traffic safety, the two concepts coincide as in nature. But few projects have been integrated with the two concepts to improve safety. The paper will describe how to combine...
Rail high-speed passenger lines (HSPL) have been developed rapidly in China; however, the traditional rail crew scheduling mode called responsible mode, in which crews are bundled with vehicles, is hard to adapt to the transit characteristic of HSPL. Moreover, the utilization of rail crew resources is commonly inefficient and the scheduling methods are generally behindhand. To reduce the pressure...
Being lack of the evaluation indexes system and evaluating method of domestic normal transit system's barrier-free service quality, there are not enough scientific principles for barrier-free planning, design, management and supervising of normal urban public transportation system. So, in this paper, an initial new evaluation indexes system of that mentioned above is set up, also, the definition and...
Various parameters of the model are set based on the minimal vertical safety distance model on highway. Where the range of driver reaction time is large. The impact of the driver reaction time on the safety distance is analyzed. The driver reaction time is affected by driving experience, adaptability, sex, psychological and physical conditions and other factors. In the scope of driver reaction time...
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,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.