AHP Methodology Application in Garage-parking Facility Location Selection

The paper deals with the selection of traffic infrastructure facility location by applying the AHP (Analytic Hierarchy Process) multi-criteria analysis methodology. The proposed methodology is applied in a case study to solve the problem of selecting a location for the garage-parking facility in the town of defined characteristics. The paper analyses the characteristics of five potential locations (alternatives), the selection of criteria and measures for assessing the alternatives and presents the input data preparation, the application of the selected method and the analysis results. All the relevant criteria for the analyses were included: the traffic, the economic criteria and those which nowadays are of great significance: the influence of the facility on the environment and the social criteria which is in accordance with the sustainable development principles. The goal of the paper is to present the procedure of the AHP method application on the complex issue of traffic planning and to confirm the adequacy of the chosen method on the traffic facility strategic planning

Application of Sustainable Mobility Principles on Enhancement of Traffic Conditions in Smaller Cities

Održiva mobilnost ima za cilj osiguravanje mobilnosti, prvenstveno u urbanim područjima, uz istovremeno racionalno korištenje prostora, okoliša i pozitivan utjecaj na zdravlje i općenito kvalitetu života. U ovome radu se prikazuje primjena ovoga koncepta na primjeru manjeg grada, Grada Otočca. Odabrana je uža zona centra Otočca za koju su analizirani prometno-prostorni pokazatelji te predložena rješenja kojima se uz minimalnu dodatnu izgradnju može postići unaprjeđenje prometnog sustava, što je u radu obrazloženo.Sustainable mobility has a goal to assure mobility, mostly in urban areas, and rationally use space and environment at the same time, not neglecting its impact and positive effects on human health and quality of life. In this paper application of this concept is presented on the example of the City of Otočac. The chosen area was the city center for which all necessary traffic and spatial analyses were done and some possible solutions for enhancing traffic conditions with minimal investments were proposed and evaluated

Comparative Analyses of Parameters Influencing Children Pedestrian Behavior in Conflict Zones of Urban Intersections

Children pedestrians make up 30% of the total number of children injured in road traffic in the EU. Research shows that children are injured more often in the urban areas, in residential areas near schools and parks, often at intersections and pedestrian crossings. In this study, children's traffic behavior was analyzed by observation of signalized pedestrian crosswalks. According to the same methodology, the research was conducted in three cities in two countries (Enna, Italy, Osijek and Rijeka, Croatia) with different urban and traffic characteristics. A total of 900 measurements were analyzed, 300 in each of the cities at 18 pedestrian crosswalks located in an urban setting in the vicinity of primary schools. A detailed statistical analysis of the influence parameters shows that, as general influence parameters, pedestrian crosswalk length, movement in a group and the age of children can be distinguished. Factors that have proven to have a significant influence on the movement of children in two of the three cities observed are gender, supervision by adults, running and cellphone use. The result can serve as a valuable input for interventions in traffic education as well as a basis for the improvement of traffic conditions at intersections where children are regularly present

Optimization of roundabout design elements

Analiza izvedenih kružnih raskrižja u nekoliko hrvatskih gradova ukazuje na to da izgrađenost područja raskrižja pri rekonstrukciji klasičnih tipova raskrižja u kružna u pravilu limitira raspon vanjskog polumjera samoga raskrižja. Hrvatske smjernice za projektiranje i opremanje raskrižja kružnog oblika-rotora, za proračun kapaciteta malih i srednjih kružnih raskrižja sugeriraju uporabu Austrijske metode koja u proračunu respektira geometrijske uvjete na raskrižjima što je razlog njezine uporabe za analizu korelacije između geometrije i kapaciteta raskrižja u ovome radu. Kako urbane lokacije ne omogućavaju uvijek primjenu optimalnog polumjera u ovome radu se analizira način optimiranja polumjera i drugih geometrijskih elemenata raskrižja u ovisnosti o željenom kapacitetu raskrižja. Rezultati su pokazali da elementi oblikovanja ulaza i izlaza u kružno raskrižje kao i postignuta udaljenost konfliktnih točaka na samom privozu imaju utjecaj na kapacitet samog raskrižja te da se optimiranjem njihovih iznosa u funkciji kapaciteta može racionalizirati potreban prostor za raskrižje.Analysis of roundabouts constructed in several Croatian cities has shown that the developed intersection areas, when reconstructing the classical intersections into roundabouts, have limited the outer radius of the intersection as a rule. Croatian guidelines for roundabout design and equipment, for capacity calculation of small and medium roundabouts suggest application of the Austrian method which takes into consideration the design conditions at intersections, which is why it has been applied in this paper for analyzing the correlation between the intersection design and capacity. Since urban locations do not always allow application of the optimal radius, this paper analyses the way of optimizing the radius and other elements of the intersection in relation to capacity. The results have shown that the roundabout entrance and exit parameters as well as the achieved distance between the conflict points have an impact on roundabout capacity and the optimization of its size as a function of the capacity can rationalize the area needed for the intersection

The Roundabout Capacity Estimate Microsimulation Model

Računalni programi namijenjeni prometnim mikrosimulacijama stekli su značajnu popularnost i široku primjenu, kako u praktičnoj primjeni, tako i u istraživanjima. Broj prometnih simulacijskih modela značajno se povećao, a samo do kraja prošloga stoljeća bilo je dostupno više od 50 simulacijskih modela. Njihova je prednost mogućnost predviđanja prometnog ponašanja u svakodnevnim, ali i izvanrednim situacijama. Za razliku od klasičnih analitičkih metoda analiza prometa, simulacijski modeli mogu prikazati i dinamiku prometnih sustava, a 2D ili 3D animacije su, kao rezultat njihovog modeliranja, znatno razumljivije nestručnoj javnosti. Cilj ovoga rada je ukratko opisati osnovne postavke ikrosimulacijskih računalnih programa. Detaljnije će biti opisan računalni program AIMSUN te prikazan postupak izrade AIMSUN (Advanced Interactive Microscopic Simulator for Urban and non-urban Networks) mikrosimulacijskog modela za primjer kružnog raskrižja u Radničkoj ulici u Rijeci. Budući da se prometni simulacijski računalni programi obično koriste za procjene značajki prometnih tokova, poput prosječnog vremena putovanja, kapaciteta prometnica ili prosječnih brzina vozila, modeli se temelje na podešavanju ulaznih parametara kako bi se postiglo razumno podudaranje između rezultata modela i podataka s terena. Taj se postupak zove kalibracija, a ona je nužna za dokazivanje vjerodostojnosti simulacijskog modela, odnosno validacije modela. Za kalibraciju i validaciju planiranog simulacijskog modela u ovom su slučaju dobiveni rezultati uspoređeni s rezultatima dobivenih drugim analitičkim metodama proračuna (Austrijskom metodom) i računalnim programom SIDRA INTERSECTION (Signalised & Unsignalised Intersection Design and Research Aid) koji se bazira na australskoj metodi proračuna kapaciteta kružnih raskrižja.Computer programs designed for traffic microsimulation have gained considerable popularity and widespread use, both in practical application as well as in research works. The number of traffic simulation models has increased significantly and until the end of the last century there were more then 50 simulation models available already. Their advantage is the ability to predict behaviour in everyday traffic, as well as in emergency situations. Unlike conventional analytical methods for traffic analysis, simulation models can also display the dynamics of traffic systems and 2D or 3D animations, as a result of their modeling, are much more understandable to incompetent population. The aim of this paper is to briefly describe the basic settings of microsimulation computer programs. The AIMSUN computer program will be described in details and the process of making the AIMSUN (Advanced Interactive Microscopic Simulator for Urban and Non-Urban Networks) microsimulation model for roundabout in Radnička Street in Rijeka will be shown. Since the traffic simulation computer programs are commonly used to estimate characteristics of traffic flow, such as the average travel time, the capacity of roads or the average speed of vehicles, models are based on adjusting the input parameters in order to reach a reasonable matching between model results and field data. This process is called calibration, and it is necessary in proving the authenticity of the simulation model and model validation. For the calibration and validation of the planned simulation model in this case, the obtained results were compared with those obtained by another analytical capacity method (Austrian method) and the SIDRA INTERSECTION (Signalised & Unsignalised Intersection Design and Research Aid) computer program which is based on the Australian calculation method for roundabout capacities

Alternative Types of Roundabouts as a Measure to Improve Traffic Safety at Intersections

Dvotračna kružna raskrižja primjenjuju se kao rješenje koje povećava kapacitet raskrižja (u usporedbi s klasičnim i jednotračnim kružnim raskrižjem), ali istovremeno značajno smanjuje razinu prometne sigurnosti. Alternativna kružna raskrižja pokazala se kao „kompromis“ između većeg kapaciteta, u odnosu na jednotračna i bolje prometne sigurnosti, u odnosu na dvotračna kružna raskrižja. U radu je prikazana analiza primjene alternativnih kružnih raskrižja na lokaciji postojećeg dvotračnog kružnog raskrižja te višekriterijska analiza kao alat pri odabiru optimalne varijante.Two-lane roundabouts, the one-level intersection types, are used as a solution to increase the capacity of the intersection (in comparison to the classic and the one-lane roundabout). However, at the same time they significantly reduce the level of traffic safety. Alternative roundabouts are a “compromise” for achieving higher capacity compared to one-lane, and better traffic safety compared to two-lane roundabouts. The paper presents the application of alternative roundabouts at the location of the existing two-lane roundabout and multi-criteria analysis as a tool in selecting the optimal variant.</p

Review of multicriteria-analysis methods application in decision making about transport infrastructure

U radu je obrazložena složena problematika donošenja odluka o prometnoj infrastrukturi u urbanim područjima te analizirana primjena metoda višekriterijske analize u tom procesu. Analizom je obuhvaćeno planiranje, projektiranje, održavanje i rekonstrukcija prometne infrastrukture. Autori u radu daju zaključke o mogućnostima, prednostima i ograničenjima primjene metoda višekriterijske analize u cilju unapređenja kvalitete donošenja odluka o prometnoj infrastrukturi u urbanim područjima.The complex issue of making decisions on transport infrastructure in urban areas is considered in the paper, and the use of multicriteria-analysis in this process is analysed. The analysis covers planning, design, maintenance and rehabilitation of transport infrastructure. Authors present conclusions on the possibilities, advantages, and limitations of the use of multicriteria-analysis methods, with the purpose of improving quality of decision making regarding transport infrastructure in urban areas

Definition of learning results during civil engineering studies at the University of Rijeka

U radu je prikazan model definiranja ishoda učenja razvijen na građevinskom fakultetu u Rijeci kao mogući način stjecanja znanja, vještina i kompetencija nakon završene određene razine studija građevinarstva. Definiranje ishoda učenja provedeno je suradnjom akademske zajednice, poslodavaca i završenih studenata uz uvažavanje inozemnih preporuka i iskustava te iskustva nastavnika u provođenju studija, oslanjajući se na klasifikaciju u nacrtu Hrvatskog kvalifikacijskog okvira.The learning results definition model, developed at the Faculty of Civil Engineering of the University of Rijeka, is presented in the paper. The emphasis is placed on the way in which knowledge, skills and competencies are gained after completion of a specified level of civil engineering studies. Learning results have been defined through cooperation between the academic community, employers and alumni, taking into account recommendations and experience from other countries, and the teaching experience of lecturers as gained during the conduct of studies, all based on the classification provided in the draft Croatian qualification framework

Improving decision making in defining priorities for implementation of irrigation plans using AHP methodology

U radu je prikazana metodologija definiranja prioriteta kod realizacije planova navodnjavanja primjenom metode višekriterijske analize AHP (Analytic Hierarchy Process). Ciljevi ovog rada su: potvrditi primjerenost korištenja višekriterijskog pristupa i AHP metode za definiranje prioriteta u realizaciji planova navodnjavanja, prikazati modele pripreme ulaznih podataka za primjenu AHP metodologije, analizom primjene AHP metode dati smjernice za njenu primjenu u definiranju prioriteta realizacije planova navodnjavanja, te za daljnja istraživanja. Primjena metodologije višekriterijske analize dana je na primjeru izbora lokacije pilot projekta navodnjavanja Primorsko-goranske županije. Rezultati primjene AHP metode uspoređeni su s rezultatima izbora pilot lokacije provedenog u Planu navodnjavanja Primorsko-goranske županije te su dani zaključci usporedbe.The paper deals with the methodology of determining the priorities in implementing irrigation plans using multi-criteria analysis AHP (Analytic Hierarchy Process) methodology. The aims of this paper are: confirm the adequacy of using multi-criteria analysis approach and AHP method when determining priorities in fulfilling irrigation plans; present models for preparation of the input data for AHP method application; by analysing the use of AHP application on a specific case study, give suggestions for its application on priority determination in implementation of irrigation plans and for further research. The multi-criteria methodology is applied on the case study of the selection of the Primorsko-goranska County irrigation pilot location. The results of applying the AHP method are compared to the selection of the pilot location conducted in the adopted Irrigation plan of the Primorsko-goranska County and conclusions are given