I remember seeing a paper that suggested outlawing all left turns except onto cul de secs or where at least one road is one way would shorten driving times for

I remember seeing a paper that suggested outlawing all left turns except onto cul de secs or where at least one road is one way would shorten driving times for everyone. Every time I get stuck behind a huge long line of jerks trying to turn left I think of that and seethe.