DARS_porocilo 2007 ANG.indd

tunnel system. The prescribed procedures were carried out in order to remedy emergency conditions
in the Company’s systems (road slipperiness, outages of communication and audio systems, measuring
instruments for the Service Centre, and visibility).
New weather stations were incorporated in the road weather system at the following locations: Kozarje
turnoff, Višnja gora slope, Sava Šenjakob, and Verd. In autumn, the Department began to upgrade the
existing telecommunication links of the Road Safety Centre from a modem connection to an optical
network.
A mobile system for traffic supervision during road closures was put into operation. The system is
designed primarily to inform users on the current situation in the closure area.
In line with the first action plan for the implementation of an electronic free-flow toll collection system with
conditions for interoperability in the EU (Resolution of 29 June 2006 adopted by the Government of RS),
a concept for the implementation of electronic free-flow toll collection on motorways and expressways
using DSRC technology (DARS, April 2007) was designed, and relevant investment and design-technical
documents were elaborated for the so-called intermediate level of implementation of electronic toll
collection at existing toll stations for vehicles of all toll classes. On 19 July 2007 the Government of RS
adopted a new Action Plan, whose final goal is the implementation of satellite toll collection for freight
vehicles in the motorway and parallel networks. Owing to the new orientations, the Department prepared
new assessments of traffic flows at existing toll stations, which shall be required to adapt to the free
passage of freight vehicles.
Telecommunications Project and Telecommunications Department
In 2007 the Company began to market telecommunication lines and entered the market of electronic
communications as a telecommunications operator. Optical fibres were leased to a large number of
providers for periods of 3 to 10 years. Within the scope of marketing activities, the Company established
connections to major city centres (Ljubljana, Maribor, Kranj, Koper), as well as connections to other
providers in areas without motorways and without their own optical fibres (Vrba — Podtabor and the
connection to the Pesnica toll station).
The Department prepared a business plan for marketing capacities and colocations, as well as a research
study for the setup of a DWDM network, which operates on the principle of combining wavelengths and
allows for the marketing of various capacities. The system also allows for the uniform supervision of
the entire telecommunications network for the Company’s own needs, and a faster transmission speed
in case of technologically sophisticated forms of toll collection and consequently higher demands
for the undisturbed operation of the Company. This has set the foundations for the development of
telecommunication activities of DARS d.d. as potentially one of the most powerful infrastructure operators
in the country.
The first connection was established on the level of wavelength combining of signals on the Dunajska
— GriË route for the needs of redundancy storage of data, where employees were acquainted with the
system and its possibilities. The IP telephony system, which enables substantially larger functionalities
than traditional solutions, was installed in Murska Sobota. The IP platform itself allows for the convergence
of services.
A connection to traffic light intersections was established, providing insight into occurrences on city
entry roads for the needs of the Business Information Centre.
Telecommunications equipment was upgraded for the needs of redundancy links for the transmission of
tolls and other urgent transmissions of data ensuring the undisturbed operation of the Company.
In 2007 the Company continued to implement the project aimed at reducing telephony costs by the
inclusion of internal links between DARS’ commuter centres.
41 ANNUAL REPORT DARS d.d. 2007 BUSINESS REPORT