This paper introduces a knowledge-driven approach for solving short range conflicts in En-route STCA situation in order to assist the air traffic controller to handle emergency and ensure the safety. In stead of applying classic conflict resolution approach, case-based reasoning theory and technology is used to transfer the controllers’ knowledge and experience to automate conflict resolution. ...

Traffic conflicts among right-turn vehicles (RTVs), nonmotorized vehicles (NMVs) and pedestrians were examined for urban signalized intersections with exclusive right-turn lane. This study proposed an approach to dynamically calculate the duration of the prohibited right-turn for vehicles by using a measure called the Degree of Clustered Conflict (DCC). The process of DCC control includes: 1) q...

In this paper, we propose a construction process that enables the transformation of an urban traffic network using a cellular automata lattice. An abstract network hierarchy is defined which allows us to describe the important properties of an urban traffic network layer by layer. The cellular automata lattice is extended with three additional types of cells that permit the modelling of conflic...

The conflict resolution problem is quite simple as long as the number of aircraft involved is small. Many automation projects disregarded the problem of clusters and failed on real traffic tests because they were unable to deal with complex conflicts. The first definition of cluster appeared in the middle of the nineties when theoretical research started on conflict resolution. The n-aircraft c...

In the Federal Republic of Germany, the accident involvement of elderly drivers to date is low, corresponding to their low traffic participation. With a definite increase in the number of elderly drivers in the near future frequent adverse effects on traffic safety are expected. Particularly age changes in vision and reaction ability are considered to be important. Compared to a representative ...

So far, road safety is studies with the general purpose traffic simulation models extended towards including conflict statistics. This approach, however, is inherently limited. The dynamic road safety model should incorporate the variables that are critical for road incidents but superfluous for simulating general traffic: the characteristics of mechanical and functional characteristics of vehi...

Though there is considerable agreement among the past studies about the great variability in conflict judgments by Air Traffic Control Specialists (ATCS), this work puts a first step forward in direction of a common core shared by controllers for perceiving conflicts. First, traffic scenarios were built from real traffic recordings, showing two converging aircraft. Three variables characterized...

The Border Gateway Protocol (BGP) is an interdomain routing protocol that allows each Autonomous System (AS) to define its own routing policies independently and use them to select the best routes. By means of policies, ASes are able to prevent some traffic from accessing their resources, or direct their traffic to a preferred route. However, this flexibility comes at the expense of a possibili...

The task which includes computing of non-conflict schedule for crossbar switch node of packet commutation is NP-hard. After checking their efficiency with throughput modelling by uniform load traffic, the check for non-uniform traffic is required. In the presented paper we propose a procedure of calculating the upper boundary of throughput for crossbar packet switch node. The results of the com...