Program period III (2017-2022)

TRIEKOL – Applied Road and Rail Ecology is the research program of the Swedish Transport Administration (STA) on the impact of transport infrastructure on biodiversity and landscape ecology.

The aim of the research programme is to develop knowledge and methods that can help the transport sector to maintain and, where possible, improve the ecological functions and qualities of the landscape.

The work within the program has a direct link with ongoing operations of the STA, and the results are used to develop new guidelines, planning new investment projects, and in the development of maintenance of existing roads and railways.

TRIEKOL has now started its third program period, which includes the years 2017-2022. The program is divided into several subprojects within the two themes Animals and Infrastructure habitats. See Earlier work to learn more about the results from TRIEKOL I and II of the period 2009-2015.


For further information about TRIEKOL, please contact J-O Helldin, Centrum för biologisk mångfald, SLU:
E-mail: j-o.helldin(at)
Telephone: +46 (0)706-07 53 22