No.
I have tried several methods to get drivers to know that their turn signal is on. After about 20 tries I give up. Not a one understood what I was doing and kept right on blinking. This is especially true when I overtake a slower cart and try to hail them as I pass. It seems to startle them, and I am afraid someone might accidently swerve and bump the curb. I never pull out in front of a cart that is approaching an intersection with its turn signal on. Me?......I never forget to turn mine off.
