Crash barrier and method for installing same

A method for installing a crash barrier, comprising:

• inserting at least two posts;
• fastening a crash barrier to the posts, the crash barrier including
• a first outer layer,
• a second outer layer that is spaced apart therefrom, and
• a plurality of spacer blocks which are arranged between the outer layers,
• wherein the crash barrier is divided along its longitudinal extent into at least two partial sections, which are joined by at least one connecting element that has a first longitudinal section, a second longitudinal section and a third longitudinal section,
• wherein the first and third longitudinal sections are designed to each be connected to a partial section of the crash barrier, and the second longitudinal section connects the first and third longitudinal sections to one another,
• wherein the outer side of the second outer layer is designed and intended to be connected to at least one post;
• and
• joining the partial sections with the at least one connecting element;
• and
• connecting the outer side of the second outer layer to the posts.