[tim333]

The house two down from my mums kept having cars crash through the garden wall and into the garden. They fixed it with speed bumps and a junction redesign as two mini roundabouts. View of them from near where the crashes were https://www.google.co.uk/maps/place/Sun+Ln,+Harpenden+AL5+4H...

before it was just a crossroads. The tree in the road wasn't there - you could blast straight through if you didn't crash. Must have reduced crashes 10x.