ElI5: how do the tank barriers (looks like large jacks) stop tanks? I see two people can carry them, can’t the tank push it out if the way?

Question

ElI5: how do the tank barriers (looks like large jacks) stop tanks? I see two people can carry them, can’t the tank push it out if the way?

In: 174

Answer 1

Called a chzech hedgehog this was copied from wiki

The hedgehog is not generally anchored to prevent movement, as it can be effective even if rolled by a large explosion. Its effectiveness lies in its dimensions, combined with the fact that a vehicle attempting to drive over it will likely become stuck (and possibly damaged) through rolling on top of the lower bar and lifting its treads (or wheels) off the ground