Left Turns Into Parking Spaces and Other Craziness

As I'm out and about in Highland Park, I'm often amazed at the crazy things drivers do.  Here's a few I've seen in just the past week:

• Left turns into parking spaces.  More often than not, right in front of a sign prohibiting the practice.  Highland Park has done an admirable job of angling the parking spaces to discourage this, but I can't even recount the number of times where I've seen drivers make a sharp left, then back up, try to straighten out, back up and straighten out again, to get into the parking space.  All the while backing up traffic...
• U-turns in the middle of intersections.  Central Avenue and Beverly Place - typically drivers who are eastbound and then desire to turn westbound.
• A left turn from westbound Central Avenue onto eastbound Deerfield Road (right past the triangular spot).
• Vehicles simply stopping in the middle of the street - no signals, nothing.  Then letting out a passenger - I've seen this on Green Bay Road, Central Avenue, Laurel by the library, etc...
• and my personal favorite: Talking on the cell phone without a hands-free device...

What, if anything can be done?  I'd suggest the following for kind consideration:

• Left turns: Put up medium height poles with chains on them down the middle of the roadway in the Central Business District.  Make them removable for the winter months.  This might also have the added benefit of keeping pedestrians from crossing in the middle of the street.
• U-turns: Signs preventing the practice would be nice.  But extending the median out longer by a few feet might help keep drivers from considering a U-turn.

What do you, kind reader, think?  How about suggestions for the rest?

In the meantime - stay safe!