The barriers are designed to snap off. I have reason to know. Large blue light escort company vechicle (truck) not allowed to stop because of passenger. 4 vechicles for 1 guy. Wee are booting down the motorway standard procedure is to open barriers which they did. Just as I’m going trough barrier comes down. SMACK and the barrier goes flying. Not a mark on the truck. That followed me for a while. Some good natured slagging. JJH