Analysis of the dependencies between the control algorithm adopted at a single intersection and the effects of area control

The article presents considerations on the mutual dependence between control algorithms at a single intersection and area control algorithms, as well as their impact on control efficiency in a system covering a sequence or network of street intersections. The problem of dividing decision-making functions between local and central levels in traffic control systems (TCS) has accompanied these systems since their inception. Analyzing the history of TCS development, including those considered advanced today, one can see a reluctance towards centralized structures, while the advantages of a certain dispersion and functional division of multi-layer, often hierarchical, yet clearly decentralized systems (e.g., UTOPIA, ASTRUD) are emphasized. Using the example of linear synchronization (coordination) on a sequence of intersections, dilemmas related to reconciling local traffic light adaptation for individual intersections with the requirements, limitations, and recommendations concerning control efficiency on a coordinated sequence will be presented.Analysis of the dependencies between the adopted control algorithm on a single crossroads and the effects of area control
Abstract
The article will present considerations of mutual dependencies between control algorithms on a single crossroads and algorithms of area control and their influence on the efficiency of controlling within the system covering a sequence or network of crossroads.
The problem of division of decision functions between local and central levels within road traffic control systems has existed since the moment of their creation. On the example of linear synchronicity (coordination) at a sequence of crossroads, dilemmas shall be presented connected with combining local adaptation of traffic lights for particular crossroads with requirements, limitations and recommendations concerning efficiency of control on a coordinated sequence. (…)