Yes. Driving is about predictability. Anything you can to let other drivers predict what you will do is helpful, even if it feels redundant.

Use every tool at your disposal to signal your intentions and awareness of the situation on the road.

Are you turning? Then use your TURN INDICATOR!!1! Does the opposing flow of traffic know you're in a turning only lane? No.

Yes, because I'm not a bad driver.

Yes.
Because I don't think about using my turn signal.
I just use it every time I'm about to turn.

Yes, of course. Every time the car changes direction. Don’t be lazy

Yep. I use it as much as possible. I use it in car parks. I use it pulling out of parking spots. I use it pulling out of my driveway.

I don't drive, but as a pedestrian:

USE YOUR GODDAMN TURN SIGNAL

When driving, be predictable, consistent and polite. You want everyone to know your intentions so they don't go and do something stupid because they think you're doing something else.

Just because you're in a turn only lane doesn't mean other drivers know you're in a turn only lane.

The turn signal is for them, not for you.

Sigh... The fact that you have to ask.

Yes; you should always use your turn signal when you are turning. Just because you saw the arrow on the ground, that you are now stopped ontop of, doesn't mean everyone else is fully aware of your intention to turn. Hence, signals to indicate your intentions to those around you...

If you signal in turn lanes or while switching lanes when no one is around you'll build healthy habits of using your signal in all other appropriate times.

Signal every time you plan to deviate from your current lane of travel.

Also FFS, signal before you start to merge so that people know what the fuck you're doing. Too many times I've ridden with people that got upset when no one is "letting them in" and they haven't even bothered to tell people they want in.

If there’s a hint of ambiguity about the layout of the road or my intentions, I signal. It can me 3 am and I’m the only person on the road. It’s right the thing to do.

Over here they're called indicators and you're supposed to indicate any change of direction. So yes, I do. Also I'm not a cunt.

Basically always. Unless my signal automatically turned off as I merged into the left lane and then I turned left immediately before I even had time to turn it back on

always use your turn signal ANY TIME you are changing from one lane to another, merging, or MIND BLOWING INFO: turning at an intersection.

also turn it on with ample time to indicate YOU'RE GOING TO MAKE A TURN, YOU STUPID MOTHERFUCKING ASSSHOLE PLOWING DOWN THE ROAD IN A MULTIPLE TON MUDERBOX COMPLETLEY IGNORING ANYONE ELSE IN EXISTENCE.

I do because it's the law, dillweed.

Yes, because if you don't do it every time, eventually you'll forget when it really matters.

It also provides clarity to other drivers. People do dumb things in cars. If someone's in the turning lane ahead of me without their signal, there's part of me that's watching to see if they're confused and about to do something foolish. Signals = clear intentions = peace of mind.

It's the only acceptable form of communication amongst others going at deadly speeds with a vehicle that can kill anyone. So I would say it's just common decency to use one. And the law. And helpful.

The signal is for others, not yourself. Use it.

I use it any time I'm turning. Remember, it's for the people in front of you as well as the people behind you, and at night, it can sometimes be hard to tell if the oncoming lane is a turn-only lane.

No longer drive but yes.

The drivers around me, including those in front, might not realize it's a turn only lane. It also shows them that I know it's a turning lane and shows my intent.

If you were being tested for your driver's license, would you use the turn signal to indicate your turn?
Therein lies the correct, and only, answer.

Yes, of course I do. I usually signal even when I'm totally alone on the road.

It's zero effort to turn on the signal. I say do it every time you're planning to turn or merge. Why not?

I guess sometimes if I'm behind a bunch of cars in a turn lane, I'll wait until I'm up near the front and about to actually turn.

Just out of instinct.
Doesnt hurt to use them anyway ¯\_(ツ)_/¯

Yes.

Mainly because I don't want to reinforce a habit where I turn and don't signal.

I got the idea to post this after seeing 3 cars in one day not use their turn signals in a turn lane. I always use mine, for all of the very good reasons people have been replying with.

Why would it matter? You know that you're in a turn-only lane, but people around you? Not necessarily.

If I see someone in the right turning lane with their right indicator on, I assume they are about to turn right.

If I see someone in the right turning lane but they have their left indicator on, I assume they want to leave the turning lane.

If I see someone in the right turning lane without their indicator on, I assume they are probably going to turn right but they may have made a mistake or changed their mind, so I'm more cautious if I'm passing or try to leave room for them to get out if appropriate. This is the most annoying situation for me because I have less information to guess what they might do next.

Honestly, it's become so much of a habit that I would sometimes use mine when turning around the perimeter of a parking lot without thinking, despite it being a corner where a turn is the only option.

The best thing you can be while on the road is predictable. Applies to everyone in traffic too.

Well, yes, because you're still changing direction and have to indicate this. Our street traffic laws in Switzerland do not make exceptions for turn lanes.

Do you assume everyone around you is fully aware of what’s happening when they are controlling their death machines?

I always would. The only time it becomes a bit ambiguous is if there are two turn lanes, e.g. you're turning left from the second-to-left lane. In that case I'd usually indicate later, maybe when I've stopped or the white line is solid, so it's clear I'm not trying to change lanes.

I'm probably over thinking it.

Yes. Habit.