UNIFIED MODELLING APPROACH FOR TRAFFIC AT ACTUATED CONTROL SIGNALS USING UML-RT

Ewins Pon Pushpa Solomon and Manamalli Deivasikamani

Keywords

Unified Modelling Language(UML), UML for RealTime (UMLRT), modelbased development, state machine, capsule, Rational Rose Real Time, vehicle actuated control, delay, probabilistic modelling

Abstract

UML is an object-oriented industrial standard modelling language, used more and more in real-time domain. A real-time system is often confronted with a need for concurrent execution activities to fulfil the timing constraints. The concept of Real-Time Object-Oriented Modelling has been incorporated into the CASE tool Rational Rose Real Time (RoseRT) in the form of a UML profile, commonly called UML-RT. Our aim is to propose a unified modelling approach from model design, simulation, until code generation for traffic at actuated control signal using UML-RT. A new algorithm is proposed to accommodate any input distribution, stationary arrival or temporal distribution. In the simulation result, maximum and minimum waiting time for each signal phases, signal sequence probabilities are estimated for a four road intersection to validate our proposed algorithm.

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