Jadranka J. Jovic

Customer perception of service quality in public transport

AbstractThis paper presents the research and analysis process showing that transport system customers have a specific perception of service quality, as an indicator of transport system. Determining satisfactory level of service quality implies knowledge of travel demand and travel behaviour. There are a lot of elements that define the transport system quality. The goal of this paper is to identify the public transport systems service quality elements that should be primarily acted on, in order to increase the level of service quality from transport system users’ (public transport users’ and non-users’) point of view, with minimal investment. The paper describes a specifically defined research methodology for determining service quality elements that should be primarily acted on, from the transport system users’ point of view. Methodology involves the use of Importance Performance Analysis (IPA) which is upgraded with the state preferences analysis. Presented methodology, which is used to determine user p...

Efficient Methodology for Assessment of Targets and Policy Measures for Sustainable Mobility Systems

The development of transport policy measures to reduce negative environmental impacts and social costs is crucial for decision makers and traffic researchers seeking ways to decrease transport demand (mostly passenger car) and congestion levels. This paper proposes a methodology for testing optimal public transport (PT) to passenger car (PC) usage ratios in order to reduce negative environmental impacts and external costs as a part of social costs by implementing proposed transport policy measures. The effects of different city transport policies on the total transport demand of PC and PT during morning peak period in Novi Sad, Serbia, were tested through a traffic macroscopic simulation procedure. Traffic flow distribution outputs were used to estimate external costs and pollution emissions in proposed current situation scenarios. The results of this study enable the development of sustainable transport strategies through identification of different combinations of mobility management measures that would produce desired outcomes.

The role of trip generation models in sustainable transportation planning in South-East Europe

Abstract The idea, representing a fundamental starting point in this article, is to confirm that the models for demand forecasting, in terms of planning urban development, gave the results of the forecasted period. In other words, the available models continue to be a valid theoretical basis to be used for planning the sustainable development of the cities. The presentation of model development in the cities of South-East Europe shows that the matter of city sustain-ability has always represented the focus of attention and has been the subject since the early ‘50s till the present day. Modelling trip generation in transportation studies in the cities of the former Yugoslavia has been taken as the basis for this paper, because it reflects all the stages modelling went through. Such situation was strongly influenced by foreign experience, especially that gained by Anglo-Saxons. Introducing procedures for analytical modelling that relate household socio-economic and land use characteristics to the intensity ...

Target modal split model

Abstract The research presented in this paper is aimed at defining a model that enables the management of the relationship between private vehicles and public transport applying the available instruments of city transport policy such as parking policy and public transport policy measures. Statistical data used for modelling is sourced from the database in a wide range of EU cities. The target model was developed in the form of stepwise regression analysis. Very favourable statistical results were obtained, and the subsequent tests on the city of Novi Sad (250000 inhabitants) led to the conclusion that the obtained results were suitable for implementation in practice. The results of the implemented procedure are of great importance for the enhancement of the existing transport policies in cities, as they enable the development of strategies for finding combinations of instruments that would bring the transport system and urban environment into a desired-viable rather than consequential condition.

Sensitivity of street network capacity under the rain impact: case study of Belgrade

It is generally know that adverse weather conditions cause changes in urban transportation system. Research of weather impact on the urban transportation system was additionally intensified by actualisation of climate changes problem. In urban area, precipitation may reduce the efficiency of transportation systems, since it often results in larger travel times and higher congestion levels in street networks. Therefore, it is important to examine the impact of precipitation on the urban street capacity. In accordance with climate characteristics of research area, the focus of this paper was on the rain impact. Impact of rain was analysed only in the context of transport supply, and not of transport demand. Sensitivity of the street network capacity was chosen to represent transportation system supply. It was analysed through the changes in saturation flow rate under the rain. Results of the research have shown significant sensitivity of street network capacity on the rain impact. Moreover, the rain impact was quantified by the capacity sensitivity coefficients, which were implemented in procedure of capacity calculation.