ABSTRACT
Tests and experiments aimed at increasing safety in tunnels have been carried out continuously in the fire gallery at the Hagerbach Test Gallery since 2000. The fire gallery has a gradient of about 4% with a length of approx. 230 m, a width of approx. 9.5 m and a height of approx. 6.5 m, giving it the same cross-section as a two-lane motorway tunnel. Prior to these tests, the surfaces were largely of a rocky nature and only a short section of the floor was concreted. Extensive building work was required in order to be able to carry the tests out under near-real conditions and with the required quality.
