Here's an idea I've had for a while. You know how you come to a red light, and there are two lanes, and there's a car in the left lane... you get into the right lane because you don't know if that car will be turning left. Then someone comes up behind you wanting to make a right on red - too bad!
If we could rely on people to use their turn signals all the time, you could tell if the car in the left lane will be going straight - its turn signal wouldn't be on. But, alas, that is not reality. So, what we need is a straight signal. You get in the left lane, you turn on your straight signal, then people know they can get behind you.
The straight signal can be helpful in other situations - for example, in spots where most people turn, but you will be going straight. A couple of spots come to mind - for example, where, the road curves and a smaller road proceeds straight. There's always that one yahoo coming toward you who decides you're going to turn just like everyone else, so they'll cut in front of you. Turn on your straight signal to let him know you're coming!
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