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technology, measurement and automation), to control, measure and supervise traffic
in the city, increase safety of the road users, to immediately inform drivers, public
transport passengers and public services of the current traffic situation. The gathered
information is processed by the system to optimise traffic light cycles and provide the
best traffic flow in the city. Furthermore, it will display all the necessary information on
boards, by using the special infrastructure inWroclaw, which contains: 1,285 cameras (16
high-speed cameras with zoom function, 516 video surveillance cameras with a recording
period of 14 days, 348 video detection cameras with a recording period of 14 days and
405 video detection cameras without recording capabilities), more than 100 km of
telecommunication underground ducts, and 300 km of fibre-optic cables, 15 distribution
switches as well as 148 access switches (together with almost 300 expansion modules), 650
vehicles equipped with on-board computers, detectors and other necessary equipment
for communication, 169 dynamic passenger information boards, 13 boards with variable
message signs located at key points in the city, 12 parking information boards.
Cameras monitor different aspects of traffic in the city. They recognise the type of
vehicles as well as columns of vehicles (so-called tailbacks). Based on the observations, the
system decides which one is more important, so it will not have to wait at intersections.
The system is able to program the traffic light cycles for a particular occasion, e.g. a mass
event at the Municipal Stadium. Such information can be repeated every time there will
be a match, when such a solution will be optimal and will be remembered. The system
can repeat the task and quickly set the green light for the route of the fans and thus
change the organisation of the lights in the city. [16]
7.7.2 City of Wroclaw
The city of Wroclaw is the main city in the Wroclaw agglomeration. The city is
the fourth largest in terms of population in Poland with 634,487 inhabitants and the
fifth largest in terms of area with 293 km
2
. Administratively, Wroclaw is divided into
48 housing estates, which are auxiliary units of the city. Once the town consisted of 5
districts: Psie Pole, Srodmiescie, Stare Miasto, Krzyki, Fabryczna, which currently do
not have their own legal status. However, they still figure as a criterion for organisation
of many offices and institutions.
The town is intersected by European, national and provincial transportation
routes such as – the A4 motorway, A8 motorway, S5 express road, national road No. 5,
national road No. 94 and national road No. 98. The interchange of the A4 motorway
and roads No. 5, No. 35 and No. 98 is located in Bielany Wroclawskie, directly at the
southern border of Wroclaw. With its radial shape, the structure of the road network
of Wroclaw is heavily oriented towards the centre of the city. By the end of the 20th
century, all the bridges on the main branch of the Odra River were centralised along
its course length of approx. 2.5 km. In the years 2008–2011, the Wroclaw Motorway
Bypass (AOW) was built, and since June 2009 the Wroclaw Eastern Bypass (WOW)
has been built in stages. In the years 1977–1991, Route East-West was built in the city
centre. Since the 1980s, the city centre bypass has been built in stages. The Wroclaw
Western Bypass, also known as an agglomeration bypass, has also been built in stages.
Lesnica bypass is currently designed, the construction of which was expected to start