The turn signal is usually a multipurpose lever always located on the left hand side of the steering wheel of any given American (as in U.S.) driven car. It is located there for your convenience and as far as I know, I don't believe the car plants are using "invisible paint" on it. During your journey via CAR to your destination it would behoove you to USE the turn signal as an INDICATOR that your vehicle will be leaving my flight path imminently and which way I can expect your exit. Flipping your turn signal on while you're turning is not helpful, nor is it helpful to turn it on WHILE you're in a designated turn lane WAITING to turn. It's rather clear at the point what you're doing so basically what you're doing here is trying to draw attention to yourself because you're arrogant. Using your turn signal as soon as possible is not only helpful to the maniac drivers behind you, but it is also beneficial to you as it gives me more time to convince my foot to ease pressure pushing down the pedal to the floorboard.
I'm basically informing you because I care about your safety. I'm an extremely impulsive person and when you don't use your turn signals I have actually talk myself into braking instead of ramming into the back of your car like inertia is telling me to do. Now, please, take the turn signal OUT of the 'optional' folder of your mind and place it where it belongs. In the "do it or I'll Kathy Bates ram into the back of your car because my insurance is already high and if I'm uninsurable I can buy all of those impulsive things that I want" folder.
Thanks in advance for your consideration,
The Weave