The master's thesis outlines the concepts for upgrading the Dolenjska railway, which would turn the
railway into a viable substitute for the increasing amount of transport on the roads and a key component
of sustainable mobility. Within the proposed state spatial plan, possibilities for upgrades have been
studied on the railway section connecting Ljubljana and Ivančna Gorica. Four different variants were
created. The first variant corrects specific geometric features of the track, while the other three variants
are designed as a double-track line. The line capacity for the predicted variants was calculated, providing
a good indicator of the effectiveness of certain measures. With the help of a SWOT analysis, we were
able to choose the most viable variant. Variant V1 has proven to be the most effective as a short-term
solution within 10 to 20 years, but variant V3, which combines the remaining variants, is the most
effective in the long run.
One of the primary advantages of the V1 variant is that the line's upgrading would be carried out as
maintenance work for the benefit of the general public, since it would be conducted on the already
existing route, which also includes existing objects and geotechnical constructions. One advantage of
the V1 variant is also the more consistent scheduled train speeds as well as project solutions that are less
demanding financially than the V3 variant. However, certain shortcomings of the V1 variant remain,
even with the line's upgrade: it only has one track, slow train speeds, small radii, and is unable to
implement a regular-interval schedule.
The key advantages of the newly developed V3 variant over the V1 variant are consistent and high train
speed, double tracking, which allows for the formation of a regular-interval schedule, modern railway
infraobject that meets interoperability requirements, and improved multimodality. Since the V3 variant
is a new construction, the largest disadvantage, in addition to the high investment value, is the space
infringement, particularly in the area where the new route line is proposed. This is particularly crucial
as getting a building permit requires conducting a thorough environmental impact assessment, which
can take some time and could result in the investment's realisation as well as the building permit's
acquisition taking longer than expected.
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