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Prometna signalizacija je temelj varnosti v prometu. Enostavnost simbolov je ključnega pomena za branje prometnih znakov med vožnjo. Prometni znaki opozarjajo voznike in vse ostale udeležence v prometu na nevarnosti, prepovedi, omejitve, obveznosti in obvestila za varno in tekoče odvijanje v prometu. Prometna signalizacija mora ustrezati standardom in tehničnim zahtevam, prav tako mora biti pravilno postavljena in vzdrževana. Ena izmed temeljnih lastnosti prometne signalizacije je retrorefleksija. V diplomskem delu je predstavljena in opisana retrorefleksija prometnih znakov. Odboj svetlobe je zelo pomemben pri težjih vremenskih pogojih (npr. megla). V aplikativnem delu diplomskega dela je bila opravljena raziskava ustrezne odbojnosti prometne vertikalne signalizacije na območju izbranega odseka v občini Kidričevo. S terenskim delom je bila izvedena inventarizacija prometnih znakov. Stanje vertikalne prometne signalizacije pa ni le odvisno od vremenskih vplivov, vendar k kakovosti retrorefleksivnosti pripomore tudi količina prometa. Traffic signalisation is the basis of traffic safety. Simplicity of symbols is crucial for reading traffic signs while driving. Traffic signs warn drivers and all other road users of hazards, prohibitions, restrictions, obligations and notices for safe and current traffic flow. Traffic signaling must comply with standards and technical requirements, and must be properly installed and maintained. One of the basic characteristics of traffic signalisation is retroreflection. In this diploma thesis I have presented and described the retroreflection of traffic signs. Reflection of light is very important in severe weather, for example fog or black ice. In the practical element of the diploma, the study of the appropriate reflection of vertical traffic signalisation was carried out in a selected section in the Municipality of Kidričevo. The inventory of traffic signs was provided by field research. The impact of vertical traffic signalisation is not solely dependent on adverse weather conditions, the amount of traffic is also a major contributing factor to the quality of retroreflectivity.

Uporabniki cest za varno in udobno vožnjo potrebujejo ustrezna navodila. Kljub sodobnim navigacijskim sistemom GPS, se večina voznikov med potjo ravna po znakih za vodenje prometa – kažipotih. Kažipoti ljudi lahko tudi zavedejo in jih pripeljejo na napačen cilj. Diplomska naloga se loteva analize predpisov kažipotne signalizacije na avtocestah in hitrih cestah, kjer je pravočasno zaznavanje pravih informacij, ki nas vodijo na končni cilj, zaradi večjih hitrosti, še kako pomembno. V prvem delu naloge smo predstavili zgodovino znakov za vodenje prometa in trenutne predpise, ki veljajo v Sloveniji. V tem delu smo predstavili tudi predpise nekaterih drugih evropskih držav in nakazali na težnje poenotenja predpisov za vso Evropo. V drugem delu naloge smo s pomočjo analize anketnih vprašalnikov predstavili kako vozniki in njihovi sopotniki zaznavajo obravnavane znake ter našteli nekaj možnosti za izboljšave. Road users need appropriate instructions for safe and comfortable driving. Despite modern navigation system GPS, the majority of drivers are guided by signs for traffic management - signposts during the journey. Signposts can also mislead people and bring them to the wrong destination. The thesis deals with the analysis of regulations direction signs on motorways and highways and lead road users to the final destination. Because of the great speed, the timely detection of the right information is extremely important. In the first part we present the history of the characters for traffic management and current regulations which are in force in Slovenia. In this thesis we present the rules of some other European countries as well, which indicate the tendency for unifying the rules for the whole Europe. In the second part of this thesis we present how the drivers and their passengers perceive the present signs and list some opportunities for improvement through the analysis of questionnaires presented.