Does the property have the right to put a stone pier at the entrance and exit? Is the property responsible for the collision between the vehicle and the stone at the door?

For the traffic order of the community, the property can manage the facilities and equipment of the community and take some necessary management measures. In order to carry out traffic management, it is ok to place necessary facilities at the entrance and exit, but there must be some conspicuous tips. If the property has been prompted, the property is not responsible. If there is no hint, the property will still bear part of the responsibility.