Almost everyone looks to the side before they change direction when driving. Often, the lane change ensues without a signal. This device senses the sideways movement (or even eye tracking of eye motion to the side) and activates the appropriate turn signal.-- molecat, Feb 04 2007 Checking the wing mirrors is going to confuse the shit out of people.-- hidden truths, Feb 04 2007 But when do you check the wing mirrors? Exactly, just before you change lanes.-- phundug, Feb 04 2007 Perhaps an "intent to turn signal?" Perhaps half as bright?-- molecat, Feb 04 2007 You should be checking your side mirrors regularly, to know what's around you, and just in case.
But you could build a motion sensor into the cell-phone earpiece that everyone seems to be wearing, Bluetooth it to the car, and program it all to remember the motion of each driver's particular lane-checking, along with an approving nod or rejecting headshake, or whatever the driver does/wants.
This reminds me of riding the front seat of a tandem bicycle and asking the person on the back to signal for turns. I often said the wrong direction, for some reason, so I always had to tip my head in the direction that I really wanted.-- baconbrain, Feb 04 2007 random, halfbakery