ProTec 161 – the slim H1/W3 mobile crash barrier. Improvement of a tested solution: Higher containment level and a smaller effective range. ProTec 161 is a slim road restraint system that can be erected without supports – successfully tested according to DIN EN 1317 with an effective range of W3 for containment levels H1 and L1. By modifying ProTec 160 with patented connecting elements and a novel central stand, ProTec 161 was created: a slim crash barrier system that can be erected without supports, suitable for temporary use on construction sites. ProTec 161 passed the test in accordance with DIN EN 1317 and boasts a very small effective range W3 on containment levels H1 and L1, i. e. more powerful restraint. Containment level L1 with effective range W3 is a solid supplement of the portfolio particularly for the European market. In order to obtain the improved ProTec 161, the standard elements of the tried-and-true ProTec 160 were connected with newly developed central stands that are force-fit and screwed to the 10-metre elements with two additional central bases. This minimizes the pressure the crash barrier puts on the contact surfaces, sustainably protecting road surfaces. The elements of ProTec 160 have been approved for the list of mobile crash barrier in accordance with TL-TS of the German Federal Highway Research Institute (BASt) since 2010.