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Fleet Maintenance Management at Sušak Promet Ltd
No full textTransportni sustav je kompleksan i on u sebi sadrži mnogo čimbenika koji utječu na njegove karakteristike. Jedan od čimbenika je i održavanje. Da bi se uočili nedostaci (nepravilnosti u radu) u sustavu potrebno je njegovo praćenje (po mogućnosti kontinuirano). Tema ovog rada organizacija je održavanja voznog parka jedne transportne tvrtke. U radu je opisana struktura voznog parka, trenutna organizacija održavanja te su temeljem analize predložena određena poboljšanja s ciljem smanjenja zastoja te podizanja efikasnosti i sigurnosti u prometu.The transport system is complex and it contains many factors that affect its characteristics. One of the factors is maintenance. In order to notice shortcomings (irregularities in operation) in the system, it is necessary to monitor it (preferably continuously). The topic of this paper is the organization of fleet maintenance of a transport company. The paper describes the structure of the vehicle fleet, the current organization of maintenance and based on the analysis, certain improvements are proposed in order to reduce stoppapage time and increase efficiency and safety in traffic
The Electric Multiple Units (EMUs) Series 6112 Maintenance System
No full textVlak serije 6112 je niskopodni elektromotorni vlak koji je proizveden za potrebe HŽ Putničkog prijevoza. Projektiran je na način da uz minimalne promjene može udovoljiti potrebama prometovanja u gradsko prigradskom i regionalnom prometu. Proizvodnja navedenog vlaka uzrokovala je potrebu za suvremenom tehnologijom i održavanjem. Kontinuiranim prikupljanjem podataka o svakom vozilu i analizom kvarova dolazi se do značajnih saznanja i iskustava. Na osnovu stečenog iskustva upute za održavanje potrebno je kontinuirano optimizirati i prilagođavati Vlak serije 6112 osigurao je kvalitetniju uslugu željezničkoga putničkog prijevoza, povećan u raspoloživost, povoljnije uvjet e eksploatacije i energetsku učinkovitost.The 6112 series train is a low floor electric motor train that is manufactured for the purposes of HŽ Passenger Transport. It is designed in such a way that with minimal changes it can meet the needs of both urban suburban and regional traffic. The production of the 6112 series train caused the need for modern technology and maintenance. The continuous collection of data on each vehicle and the analysis of failures brings significant knowledge and experience. Based on the experience gained, maintenance instructions need to be continuously optimized and adjusted. The 6112 series train has provided better rail passenger service, increased availability, more favorable exploitation conditions and energy efficiency
Traffic signaling and equipment for increasing safety during temporary road regulations
No full textSigurnost u prometu ovisi o ponašanju svih prometnih subjekata, njihovim međusobnim odnosima, uvjetima na cestama, cestovnoj infrastrukturi te imovini aktivnih i pasivnih sudionika. Sigurnost cestovnog promet naročito je ugrožena prilikom izvođenja radova na cesti s obzirom na to da u navedenim situacijama u određenoj mjeri dolazi do promjene načina odvijanja prometa i/ili geometrije ceste te s obzirom na prisutnost radnika i strojeva. Osnovni način upozoravanja sudionika u prometu na navedene uvjete je putem prometne signalizacije i opreme. Prometna signalizacija i oprema služi prenošenju obavijesti o trenutačnom ili budućem stanju prometnog sustava i pravilima kretanja sudionicima u prometu. U cestovnom prometu prometna signalizacija i oprema se dijeli na horizontalnu, vertikalnu i svjetlosnu signalizaciju, te prometnu opremu. U diplomskom rado detaljno je razrađena i opisana tematika signalizacije i opreme u funkciji povećanja sigurnosti prilikom privremene regulacije prometa.Safety in road traffic depends on the behaviour of all subjects, their relations, road conditions, road infrastructure and assets of active and passive participants. Road safety is particularly endangered in road work zones considering that in some measure there are changes in traffic regulation, the geometry of the road and there is also a presence of workers and machines. Basic way of notifying traffic participants of road conditions is through traffic signalling and equipment. Traffic signalling and equipment is used to convey to road participants notifications about the current or future traffic status and rules. In road traffic, traffic signalling and equipment can be differentiated and split into horizontal, vertical and light signalling and traffic equipment. This thesis will elaborate and describe the subject of signalling and equipment for increasing safety during temporary road regulations
Effect of En-route Operations on the Air Traffic Complexity for the Airspace of the Republic of Croatia
No full textKompleksnost zračnog prometa jedna je od ključnih tematika koje se proučavaju u kontroli zračnog prometa. Veličina koja utječe na volumen prometa naziva se prilagođena gustoća, a utjecajna veličina na strukturiranost protoka prometa naziva se strukturalni indeks. U ovom radu opisane su sve veličine koje utječu na kompleksnost prema PRU modelu kojeg je razvio istraživački tim EUROCONTROL-a. Sve navedene veličine se mogu matematički formulirati i opisati kako bi se dobile ostale značajne veličine. Kompleksnost je jedan od važnijih pokazatelja stanja zračnog prometa. Analiza oblasnih operacija leta i kompleksnosti zračnog prometa se radila statističkim proračunima korelacija na osnovu Spearmanovih i Pearsonovih koeficijenata korelacije. Sav proces proračuna je objašnjen u radu, a korišteni podaci su navedeni u radu. Za potrebe proračuna i statističke obrade korišteni su podaci od 2017. do 2019. godine. U periodu od te tri godine obrađeno je svih 36 mjeseci. Konačni rezultati kompleksnosti i oblasnih operacija leta su opisani te međusobno uspoređeni.Air traffic complexity is one of the key topics studied in air traffic control. The size that affects the volume of air traffic is called adjusted density and other size that affects the structure of the air traffic flow is known as strucutural index. In this paper, all parameters affecting complexity are described according to the PRU model developed by the EUROCONTROL research team. All the mentioned quantities can be mathematically formulated and described in order to obtain other significant quantities. Complexity is one of the most important indicators of the state of air traffic. The analysis of en-route operations and the complexity of air traffic was done with statistical correlation calculations based on Spearman's and Pearson's correlation coefficients. The entire calculation process is explained in the paper, and the data used are listed in the paper. For the purposes of calculation and statistical processing, data from 2017 to 2019 were used. In the period of those three years, all 36 months were processed. The final results of the complexity and en-route operations of the flight are described and compared with each other
Implementation of Essential Operational Changes in the Single European Sky ATM System
No full textOvaj završni rad bavi se tematikom ATM sustava Jedinstvenog europskog neba te bitnim operativnim promjenama unutar ATM sustava. Razvoj civilnog zrakoplovstva u Europi bio je popraćen sa sve većom prometnom potražnjom koju tadašnji sustav nije mogao odraditi te se javila potreba za rekonstrukcijom cijelog sustava. Kako bi se taj problem dokinuo, donijela se inicijativa nazvana Jedinstveno europsko nebo koja nudi niz rješenja za sve veću prometnu potražnju u civilnom zrakoplovstvu Europe. SESAR i ATM Master Plan, kao dio Jedinstvenog europskog neba, razvijaju i implementiraju različita rješenja te daju vizije i smjernice razvoje civilnog zrakoplovstva Europe za budućnost. Rješenja koje proizlaze iz ovih projekata povećat će sigurnost, učinkovitost i ekspeditivnost zračnog prometa u Europi.This thesis describes Single european sky ATM system and essential operational changes within ATM system. Development of civil aviation in Europe was followed by increased traffic demand which the old system could not cope with so there was a need for reconstruction of the whole system. To resolve the problems, Single European Sky initiative was launched which offers a wide range of solutions for ever increasing traffic demand of civil aviation in Europe. SESAR and ATM Master Plan, as part of Single European Sky, are developing and implementing solutions and give guidlines for future development of civil aviation in Europe. Solutions which come from these projects increase the overall safety, efficiency and orderly flow of air traffic in Europe
Black Spot Analysis on the DC1 State road
No full textCestovni promet današnjice omogućava veliku razinu mobilnosti gotovo za svakog pojedinca, što donosi pozitivan učinak i na razvoj gospodarstva. Negativna strana prometa su prometne nesreće, koje u najgorem slučaju mogu izazvati smrt i trajnu invalidnost, ali i financijsku štetu. Mjesta ili dijelovi ceste na kojima se događa natprosječan broj nesreća se smatraju potencijalno opasna mjesta. Za potrebe ovog rada izvršena je identifikacija potencijalno opasnih mjesta na državnoj cesti D1 prema koracima opisanima u Metodologiji za identifikaciju opasnih mjesta u cestovnoj mreži. Svako identificirano potencijalno opasno mjesto je terenski pregledano te detaljno analizirano, uz korištenje naprednih sustava bespilotnih letjelica.Today's road transport enables a high level of mobility for almost every individual, which has a positive effect on the development of the economy. The downside are traffic accidents, which in the worst case can cause death and permanent disability, but also financial damage. Places or parts of the road where an above-average number of accidents occur are considered potentially dangerous places. For the purposes of this graduate work, the identification of potentially dangerous places on the state road D1 was performed according to the steps described in the Methodology for the identification of dangerous places in the road network. Each identified hazardous site was inspected and analyzed in detail, using advanced unmanned aerial vehicle (UAV)
Models of Rolling Stock Maintenance
No full textŽivotni vijek tehničkog sredstva započinje onog trenutka kada se ulože materijalna sredstva s ciljem njegove realizacije, a završava onda kada se vozilo izdvoji iz procesa eksploatacije (dekomisija). Sastavni dio životnog vijeka vozila je upravo održavanje kojim se funkcionalna obilježja tehničkog sredstva čuvaju, obnavljaju i vraćaju nakon pojave otkaza, ovisno o njegovim potrebama. Ono se provodi kako bi se očuvala radna sposobnost vozila. U ovom radu navedeni su pokazatelji pouzdanosti tehničkih sredstava, samo funkcioniranje sustava održavanja te modeli održavanja preventivnog i korektivnog održavanja. Analiza održavanja voznog parka teretnih vozila data je na primjeru poduzeća Tapess d.o.o.The life of a technical asset begins at the moment when material resources are invested with the aim of its realization and ends when the vehicle is separated from the exploitation process (decommissioning). Maintenance is an integral element of the life of a vehicle which preserves, restores, and restores the functional features of a technical device after failure, depending on its needs. It is carried out in order to preserve the working capacity of the vehicle. The indicators of the reliability of technical means are listed here, also with the functioning of the maintenance system and the maintenance models of preventive and corrective maintenance. The analysis of the maintenance of the truck fleet is given on the example of the company Tapess d.o.
Impact of Corona Crisis on Intermodal Transport Flows
No full textIntermodalni transportni tokovi i intermodalni transport predstavljaju način rješavanja zagušenja u prometu i smanjenja prijevoznih troškova korištenjem više modova prijevoza za transport robe od izvora do odredišta. Izbijanjem COVID-19 krize poremetilo se održivo odvijanje opskrbnog lanca i kako bi se oporavio potrebno je donošenje novih tehnologija i planova za budućnost. Kriza je pogodila svaku pojedinu prometnu granu na svoj način, ali za globalnu trgovinu najveći gubitak je kolebanje u pomorskom prometu i nemogućnost prijevoza robe. Intermodalni transport je najbrže rastući mod transporta i podržava ga se zbog njegove održivosti i ekološke prihvatljivosti koja se njime postiže. Logistika nije bila spremna za izbijanje pandemije te je u kratkom vremenu bila primorana na aktivna rješenja kako bi se nastavilo odvijanje opskrbnog lanca. Pandemija je pokazala slabosti opskrbnog lanca ali ujedno i pružila mogućnost za nova poboljšanja u budućnosti koja svakako imaju priliku.Intermodal transport flows and intermodal transport are ways of resolving traffic congestion and reducing transport costs by using several modes of transport for transport of goods from source to destination. The outbreak of THE COVID-19 crisis has hampered the sustainable development of the supply chain and in order to recover it is necessary to adopt new technologies and plans for the future. The crisis has hit every single transport branch in its own way, but for global trade, the biggest loss is the fluctuation in maritime traffic and inability to transport goods. Intermodal transport is the fastest growing mode of transport and is supported because of its sustainability and ecological acceptability achieved by it. Logistics was not ready for an outbreak of the pandemic and was forced into active solutions in a short time to continue the supply chain. The pandemic showed weaknesses in the supply chain but also provided the opportunity for new improvements in the future that certainly have the opportunity
Analyzing On-street Car Parks in Maksimirska Street of the City of Zagreb
No full textOvim radom opisane su osnovne značajke uličnog parkiranja uzduž Maksimirske cesti u gradu Zagrebu. U radu je provedeno terensko istraživanje o broju parkirališnih mjesta, popunjenosti istih te struktura i sustav naplate parkirališta. Nastavno je provedena dubinska analiza postojećeg stanje uličnog parkiranja u užem području obuhvata uzduž Maksimirske ceste te u pristupnim ulicama koje čine šire područje istraživanja. Na temelju provedenog terenskog istraživanja te analize prikupljenih podataka navedene su mjere unapređenja održivog načina putovanja i parkiranja u koridoru Maksimirske ceste.This paper describes the basic features of street parking along Maksimirska cesta in the city of Zagreb. In the paper, field research was conducted on the number of parking spaces, their occupancy, the structure and system of parking lot fees. An in-depth analysis of the current state of street parking in a narrow area including along Maksimirska cesta and in the access streets that make up the wider research area was carried out. Based on the conducted field research and the analysis of the collected data, measures to improve the sustainable way of traveling and parking in the corridor of Maksimirska ceste are listed
Architecture and Implementation of SD-WAN Technology in the Versa Solution
No full textZavršni rad se temelji na prikazu značajki jednog od mogućih smjerova razvoja mrežne WAN tehnologije SD-WAN. Kroz prikaz značajki i arhitekture pokušava se dati dojam o benefitima koje tehnologija pruža velikim poduzećima. SD-WAN pruža poslovnu agilnost, inteligentan način umrežavanja i samu poslovnu transformaciju čime se pruža zadovoljenje dinamične poslovne potražnje. Osnovnim mrežnim komandama poput testiranja odziva i traceroutea među udaljenim branchevima spojenim na Versa opremu daje se prikaz rezultata temeljenim na različitim pristupnim mrežama i koegzistenciji obje infrastrukture - MPLS i Versa Networks. Zaključno poglavlje ukazuje na moguće probleme koji se trebaju uzeti u razmatranje pri implementaciji svake SD-WAN mreže na MPLS poput naprednih prijetnji, sigurnosnih rizika, izazova praćenja prometa i same standardizacije.The elementary principles of this thesis are founded upon the demonstration of features on behalf of one of the possible developments of SD-WAN network technologies. By demonstrating the specific features and arhitecture of SD-WAN the aim is to present the benefits of SD-WAN technology in big businesses. SD-WAN network allows business agility, intelligent way of networking and transformation of business practices which meet the requirements of dynamic business demand. Basic network commands like ping and traceroute between remote branches connected to Versa equipment display the results founded on different access networks and coexistence of both MPLS and Versa Network structure. The final chapter demostrates the inclusion of possible problems which need to be considered during the implementation of every SD-WAN network on MPLS such as advanced threats, safety risks, challenges in traffic tracing and network standardization