Recent decades have seen considerable growth in computer capabilities, data collection technology and communication mediums. This growth has had considerable impact on our ability to replicate driver behaviour and understand the processes involved in failures in the traffic system. From time to time it is necessary to assess the level of development as a basis of determining how far we have com...

Proposals for air traffic management such as Free Flight call for a transfer of responsibility for separation between aircraft from air traffic controllers (ATCos) to pilots. Under many proposals, the role of the ATCo will change from one of active control to passive monitoring. The present study directly compared these types of control with respect to ATCo mental workload, conflict detection, ...

Automatic Control has been a subject of studies for the last twenty years. It involves many difficult problems that have to be solved: conflict detection, modelling of uncertainties on trajectories, clustering of 1-to-1 conflict to find unconnected n-aircraft problems, etc. . . Moreover, the n-aircraft conflict resolution problem is highly combinatorial and cannot be optimally solved using clas...

addition-conflict-flow. However, the previous models and methods gave little or no consideration to nonmotorized movements, and traffic characteristics at unsignalized intersections with only vehicular movements differ from those with vehicular and nonmotorized movements. A research project sponsored by the Ministry of Science and Technology in China was conducted by the authors to assess capac...

Priority rules are one of the most promising approaches to aircraft conflict resolution. This paper deals with the problem of priority assignment in autonomous Air Traffic Management with imperfect trajectory prediction. A robust solution is presented that relies on onboard traffic pattern classification using a data base common to all aircraft. The method allows reaching a common consensus in ...

In this paper we describe some work carried out by National Air Traffic Services in the UK into developing optimisation tools to help improve the effectiveness of one of their air traffic control safety systems—short-term conflict alert. In shortterm conflict alert a computer system continually monitors radar data and alerts air traffic controllers if it detects a situation where two aircraft a...

The unsignaled intersection of Jalan H Djole – Pasar Lama in Bekasi City is a densely populated commercial area with high economic activity. lack facilities and infrastructure that causes traffic jams at the also raises potential for conflict. This study aims to analyze level service, type conflict, conflict complexity an intersection. field survey method obtains primary data on approach volume...

Aerodrome ground traffic management consists of many processes. Their complexity causes that telematic solutions intended to assist both the air traffic controller who coordinates taxiing and the pilot who executes them are introduced. An example of such a solution is A-SMGCS system. At the moment, intensive research on advanced system functions are carried out. They include smart taxi route ch...

An air traffic control system’s main function is to separate aircraft. The computer supporting the system assists the air traffic controllers by generating a conflict alert whenever it predicts that two aircraft are about to get too close to each other. The performance of the conflict alert function is a key element to the overall functioning of the air traffic control system. A set of metrics ...

The traditional surrogate measures of safety (like number of vehicles in dilemma zone) fail to quantify the risk of crash. Traffic conflict has been proposed as an improved surrogate measure of safety for operations at isolated intersections to quantify the risk. This paper develops a dilemma zone hazard function estimating procedure to obtain the probability of traffic conflict occurring. This...