The threshold is used for the reinforcement of the base below the concrete mobile barrier of NEW YERSEY type in case of location on non-reinforced surface. The thresholds are used at the ends of prefabricated elements or on two place of the part. We will provide the option of the barrier shifting to the whole working width resulting in the appropriate action of the system at the moment of the arresting effect. The threshold surface must exceed in height the filling material placed between the thresholds. The correct design and its application are resolved by TP 139 concrete barrier. The product is resistant to the environment effects XF4 as per ČSN EN 206-1 and TPK 18.