I live near a primary school where there have been constant problems with dangerous parking by parents.
At home time both sides of the road are lined with cars half on, half off the pavement. This hardly leaves room for single traffic to get through.
On the way past yesterday I noticed bollards like these. But closer together. I think I'll avoid that lane once the schools go back. Parents have almost come to blows about the parking several times and the staff are constantly calling the police to clear them away.