izvorni znanstveni rad
Significant slowdowns in road traffic induced by increased traffic demand cause break downs and consequently, congestion on roads. On urban highways these congestion problems are most noticeable near on-ramps. To resolve traffic congestion on urban highways it is necessary to apply new traffic control approaches like ramp metering, variable speed limit control (VSLC), etc. Today’s cooperative ramp metering algorithms adjusts the metering rate for every on-ramp according to the overall traffic state on the highway and can establish additional cooperation with other traffic control sub- systems. To avoid some problems of usability and effectiveness of today’s complex highway control systems, an approach based on autonomic properties (self- learning, self-adaptation, etc.) is proposed in this chapter. Considering the mentioned, a new cooperative control method based on an adaptive neuro-fuzzy inference system is described. It can establish cooperation between VSLC and ramp metering. The new solution is tested using the CTMSIM macroscopic highway traffic simulator and Zagreb bypass as test model.
intelligent transportation systems, autonomic systems, cooperative systems, adaptive neuro-fuzzy inference system, ramp metering, variable speed limit control
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