No abstract

The article presents the research related to the feasibility of introduction of alternative power source vehicles (hybrid system) into the public passenger transport (PPT) implemented as public service obligation of public passenger transport (PSO_PPT). The study examines and evaluates the existing implementation of 10 lines of PSO_PPT and implements the methods of mathematical calculations of the energy necessary to overcome the driving resistances of vehicles operating on these lines. The applied mathematical methods also include calculations of possible energy savings from implementing regenerative braking and a simulation of the reduction in air pollutant emissions. Furthermore the article presents the development of the experimental methods involving measurement of driving speeds, fuel consumption, altitude differences, number of brake applications as well as the time of braking during the bus ride along one of the observed lines in the pilot region. The results on the observed line were compared with mathematical calculations of the possible amount of energy regeneration. Based on the comparative analysis, we introduced the regeneration factor and used it to correct the previous mathematical calculations of the possible amount of energy regeneration due to braking on the other 9 lines in the selected pilot region. The final analysis has proven the eligibility of such research, which has demonstrated significant effects in energy savings (7 %) and the reduction of emissions (20 %) in the pilot area.

The research in this article relates to an evaluation system for the implementation of lines in a public passenger transport system as a public service obligation. The purpose of this research is to present the methodology for the performance evaluation of a public passenger transport system that serves the public transport authority as a tool for making further decisions. The procedures first refer to the experimental determination of the criteria and then perform the first evaluation in the form of the value of the objective function. This is followed by multi-stage linear regression and optimization procedures that give the relation between the dependent variable ( Y ) and the independent variables ( X , ) that is, the criteria. Optimization is carried out in the coefficients ( β ), which are excluded from the optimization procedures in the case of the calculated statistical degree of insignificance. This research also shows procedures for changing the mathematical form of the criteria records and determining the impact on the final result of optimizations.

Direkcija RS za ceste je kot organ v sestavi Ministrstva za promet upravljalec javnega potniškega medkrajevnega cestnega prometa v Sloveniji. Kot koncedent ima z različnimi avtobusnimi prevozniki –  koncesionarji sklenjenih 47 koncesijskih pogodb. V prispevku je najprej prikazano trenutno stanje na tem področju oziroma obstoječe relacije med koncedentom in koncesionarji in sicer z vidika usklajevanj, dodajanj in ukinjanj voznih redov, zagotavljanja finančnih sredstev kot tudi drugih zadev, ki so sestavni del koncesijskih pogodb. Izdelane so bile prikazane primerjalne analize z Avstrijo na področju ureditve integriranega, to je mestnega in medkrajevnega cestnega in železniškega javnega potniškega prometa (JPP) in sicer predvsem z vidika učinkovitosti JPP, prikazanega kot število prepeljanih potnikov glede na razpoložljiva finančna sredstva. Predstavljen je 3-nivojski model organizacije integriranega JPP v Avstriji in sistemska razdelitev odgovornosti in pooblastil na teh nivojih. V nadaljevanju so prikazane aktivnosti na Ministrstvu za promet oziroma Direkciji RS za ceste glede prihodnje ureditve področja javnega potniškega prometa in sicer po l. 2009, ko se iztečejo obstoječe koncesijske pogodbe na tem področju.