RT Journal Article SR Electronic A1 Pirnik, Rastislav A1 Zahradnik, Jiri A1 Janota, Ales A1 Ciganek, Peter T1 Electronic Toll Collection at Parking Areas JF Communications - Scientific Letters of the University of Zilina YR 2005 VO 7 IS 4 SP 47 OP 51 DO 10.26552/com.C.2005.4.47-51 UL https://komunikacie.uniza.sk/artkey/csl-200504-0010.php AB The paper presents an object-oriented modeling of electronic toll collection in transport applications, deals with designing of a use case diagram, class diagram, sequence diagram, and state chart. The modelling of parking system activities by the UML language (Unified Modeling Language) creates suitable and effective environment for team members communication, simplifies software design process, and unifies principles and techniques used for documentation creation.