In order to separate building works from transit zone in railway yards we use protection barriers. These barriers have to be of quick fixing type that allow to position them in the easier and quicker way, without assemblage tools if possible. Dimensions and materials of barriers are safe in case of tampering. This system protects the staff working in the yard, along the railway traffic line and so collision and accident risks are lower. We can use it in all the temporary and mobile railway yards where there are some risky works to do. Protection barriers are used in case of: ordinary and extraordinary maintenance, new building construction, renewal, conservation and redevelopment, forest placing and electric plants. For specific protections it’s possible to apply a telescopic device to barriers for a higher height.