As it is currently, most signs warning of 4 way sim crossings come in the form of a resident who has a parcel near that area doing their part to keep others safe and put up hazard signs warning of impending doom if a driver doesnt slow down.

But what if the Moles could take over and help put up these road signs, not just for 4 way sim crossings but also for blind spots, like an incline that ends in a T or left or right.