Half a croissant, on a plate, with a sign in front of it saying '50c'
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Make mine a double.

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Shared Intentions

Navigation directions displayed for other drivers to know your intentions
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Do those we share the road with exercise more patience if they know our intentions?

A display on the rear of the car shows other drivers the current driving instruction our GPS device has given us as it routes us to our destination.

Display might read "turn right in 1.2 miles" or "making u- turn at first opportunity"

With this information other drivers can anticipate what our next merge, lane change, or other maneuver will be and make allowances, or better plan their maneuvers in traffic to make better use of the roads space and improve traffic flow. Maybe road rage would be reduced....

1Il0Oo, Apr 04 2015

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       It would be good for courtesy but, because of the personal scale, no real change to traffic flow. The cars would need more of a collective communication blob for any real larger scale flow change.   

       Though, If all the cars are networked, you could blindly change lines and the Gigahertz timing of the surrounding cars' computers will just slot you in.
wjt, Apr 04 2015
  

       If your display says you were supposed to turn 8 miles ago will that be the new "turn signal on for a half hour"?
cudgel, Apr 05 2015
  

       Additional information makes my driving worse. Still for professional drivers like a school bus with 30 screaming kids, it might be a welcome distraction.   

       Welcome to half.
popbottle, Apr 05 2015
  

       Your idea is a rear end collision just waiting to happen, me thinks.
blissmiss, Apr 05 2015
  

       [1Il0Oo] has had the patience to absorb Halfbakery wisdom for just under six years before posting. I think that deserves a bun.   

       As for the idea, I'm wondering how big the display on the back of the car has to be (or how good [1Il0Oo]'s eyesight is).
MaxwellBuchanan, Apr 05 2015
  

       I was recently barged off the road quite viciously by a car with a religious sticker on the back: “try praying”.
pocmloc, Apr 05 2015
  

       The collective wisdom of the bakery represents a hegemony of common sense. Thank you all for your comments.
1Il0Oo, Apr 06 2015
  

       //The collective wisdom of the bakery represents a hegemony of common sense.//   

       Wait... is that a good thing? <Googles "hegemony"; "rule by hegs"?>
MaxwellBuchanan, Apr 07 2015
  

       [1Il0Oo] applied for an account in the summer of '09, has made no annoes, and just posted the first idea. Welcome to the Halfbakery, [1Il0Oo].
normzone, Apr 07 2015
  
      
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