Figure 5.5.55 – Amphibian crossing devices for railways. A: Trench under the railway (Photo by: KamPa BV); B: Rejection devices (Photo by: K. Hilfiker); C: Example of the combination of a transversal amphibian barrier in the rail which leads the animal to a trench below. Further research is required to determine the effectiveness of such devices (Source: Adapted from Iuell et al., 2003).