Slaven Tica

COMPARATIVE ANALYSIS OF THE BASIC FEATURES OF THE EXPECTED AND PERCEIVED QUALITY OF MASS PASSENGER PUBLIC TRANSPORT SERVICE IN BELGRADE

Abstract Recently, negative trends towards the environment where the system of Mass Passenger Public Transport (MPPT) operates continue to grow. Mobility and citizens’ standard of living are constantly increasing. A significant increase in using private cars (level of motorization) along with all negative consequences faced under such circumstances as an increase in traffic volume, congestions, a decrease in travelling speed, a higher number of traffic accidents, greater negative influence on the environment etc. can be noticed. The city of Belgrade has recognized the significance of continuous research and has monitored the quality of Mass Passenger Public Transport service as well as changes that are taking place in order to influence some specific parts of transport and traffic policy in the city. This paper contains the benchmarking of results obtained in research and a trend towards changes in the expected and perceived quality of service (QoS) within the system of Mass Passenger Public Transport in ...

Researching and Analyzing the Features of Oil and Demand for Transporting Oil Derivates in the Area of Belgrade

Abstract The paper contains a summary of results obtained when researching demand for transporting dangerous goods of class 3 (oil and oil derivates) in the area of the city of Belgrade in 2007. Considering all transport modes used for carrying oil and oil derivates (road, rail and water transport), we present the total quantities of transported goods on a percentage basis. In light of road transport, the paper presents the features of demand for transport in terms of time and space that are a basis for the management of transporting dangerous goods and input to defining transportation routes to dangerous goods. Among the features of demand for transport in terms of time, the paper presents the quantities of goods transported within different months of the year, different week days and different periods of the day. The features of demand for transport in terms of space presented in the paper are goods flow features depending on their origin and the destination of movement in relation to the defined servic...

Modelling for Evaluations of Call Center for Public Traffic and Transport Systems

Abstract This paper is dealing with functional organization of a call center based on human operator work. Due to significant fluctuations of user demands during the day and from day to day, the determination of required number of agents appears as actual giving the opportunities for efficient management. The purpose of this paper is to develop a mathematical model for optimal resource allocation in a call center in order to provide a satisfactory quality of service at all times, without having more agents than necessary. The objective is to find the best staffing levels or schedule that minimizes the daily costs while satisfying all constraints. To solve this problem, we propose here a two-level dynamic programming (DP) algorithm that determines the required staffing levels by shifts. The algorithm enables optimal allocation of available human resources such that the operation costs are reduced as much as possible. The practical sample is demonstrated in a case of a call center for public traffic and tra...

Remuneration models and revenue risk mitigation in road public–private partnership projects – a case study from Serbia

ABSTRACT As a consequence of renewed interest in attracting private financing for infrastructure investments, public–private partnership (PPP) arrangements are mostly seen as a suitable mechanism for ensuring sound and quicker delivery of transport infrastructure projects. However, a general concern is that expectations of mobilizing private-sector funds have been overestimated in a number of cases. The purpose of this paper is to contribute to the risk analysis of transport PPP projects with substantial exogenous demand risk which could serve as a rationale for choosing the appropriate PPP model. The objective of this paper is to construct an analytical cash flow-based project model to facilitate the choice of the remuneration mechanism suitable for both private investors and public sector. The model provides an indication whether the project should be implemented as a ‘users pay’, a hybrid or an ‘annuity’ PPP model. The proposed methodology is illustrated using a case study from Serbia.

Implementation of the new public transport management system in Belgrade

The public transport system in Belgrade is a complex organizational and technological system by its structure, operation and management. Managing such a complex system cannot be efficiently done without the computerization of all processes in the system and data collection in order to create a reliable database. The issue of integrated management is one of the basic and most complex pre-conditions for effective and efficient public transport. The paper deals with the new public transport management system in Belgrade. Description of the systems architecture is presented. Emphasis is placed on the description of the communication system and data structure necessary for the effective and efficient public transport management.