It may be petty but I always get annoyed when I'm waiting to make a left and the oncoming car makes a right with no signal when I was just sitting there waiting for them to pass. Thanks for the heads up.
The only one is worse is the ones that put their turn signal on and then decide to go straight with the blinker still blinking. Nothing unsafe about that.
__________________
1971 Custom C/20 
1970 CST 20
1970 C/30 Flatbed
1983 C/30 Dually
2015 Corvette Z51 2021 Corvette Z51 1991 Cadillac Hearse 1982 Cadillac Eldorado Biarritz 2000 Porsche Boxster S 2020 Jeep Gladiator 1973 VW Thing 1973 Plymouth Satellite wagon 1963 Baja Bug 1959 Bug Dune Buggy 1970 Baja Bug 1987 Jaguar XJ 350.
R.I.P. El Jay
R.I.P Jessie.
R.I.P Grumpy.
Every day is a gift from God.