Glossary

This glossary includes most relevant terms used in this handbook. First version of the glossary was created during the development of the ‘Wildlife and Traffic’ handbook (Action COST 341) and it has been expanded with contributions from partners of the project Horizon 2020 ‘BISON’. Terms definitions are provided by legal texts, reference documents or by agreement between experts from both ecology and infrastructure. The organisations IENE, PIARC, UIC, and ISO have also assisted and will contribute in future updates.

Last update: October 2023 – How to cite

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There are currently 3 names in this directory beginning with the letter U.
Underpass
Structure (including its access points) which allows one linear transport infrastructure to pass under another. See also 'Wildlife underpass'.
Unpaved road
A road not covered by any artificial material such as asphalt or concrete. See also 'Paved road'.
Upgrading
Structure, mainly roads or railways or other type of linear transport infrastrcuture (including its accesses) which allows vehicles, people or fauna, to cross under another transport infrastructure. See also 'Wildlife underpass'.