Abstract: Disclosed in a safety crash barrier comprising an elongated base portion and a plurality of barrier elements movably coupled in a resting state thereof to and along the base portion, the plurality of barrier elements are configured to flexibly or elastically change into a displaced state in which at least some of said barrier elements contacted by a colliding vehicle are caused to move and absorb impact energy imparted by the vehicle so as to stop movement of the vehicle or deflect it back to its lane, to thereby reduce or prevent damages to the vehicle and/or passengers injuries. In some embodiments of the present invention a structure of a plurality of barrier modules is slidably placed on top of the base portion, the plurality of barrier modules are placed one on top the other and configured to horizontally slide one relative the other in response to impact of a colliding vehicle contacting the barrier.

Abstract: Disclosed in a safety crash barrier comprising an elongated base portion and a plurality of barrier elements movably coupled in a resting state thereof to and along the base potion, the plurality of barrier elements are configured to flexibly or elastically change into a displaced state in which at least some of said barrier elements contacted by a colliding vehicle are caused to move and absorb impact energy imparted by the vehicle so as to stop movement of the vehicle or deflect it back to its lane, to thereby reduce or prevent damages to the vehicle and/or passengers injuries. In some embodiments of the present invention a structure of a plurality of barrier modules is slidably placed on top of the base portion, the plurality of barrier modules are placed one on top the other and configured to horizontally slide one relative the other in response to impact of a colliding vehicle contacting the barrier.

Abstract: There is provided a method for monitoring and controlling the construction of an engineering project, including dividing the construction of the engineering project into the construction of project segments arranged in order, each project segment representing a necessary stage in carrying out the complete construction of the engineering project, determining the type of tests which have to be performed on each project segment construction, during and after completion thereof before proceeding to the next project segment, dividing the planned project segment structure into batches of performances to be executed, wherein each batch is defined by the type and amount of tests which must be carried out thereon, constructing the first project segment, performing the tests on the batches, and basing the advancement of the project construction into the next project segment construction on the results of the check lists and tests obtained for each batch of operation.