Many people are reluctant to use turn signals while driving. “Using your turn signal is not ‘giving information to the enemy’” is a jocular saying that has been printed on many images.

“Bumpersnicker: ‘Using your turn signals is not giving information to your enemy’” was printed in The Spokesman-Review (Spokane, WA) on December 23, 2002. “Using your turn signal is not ‘giving information to the enemy’” was posted on the newsgroup rec.arts.sf.written on February 5, 2003. “Coolest bumper sticker: ‘using your turn signal is not giving information to the enemy’” was posted on Twitter by Susan Pogorzelski on February 27, 2009. The saying originated on a bumper sticker.


Newspapers.com
5 March 1987, San Francisco (CA) Examiner, “The casualty of S.F.’s driving wars finally raises the white flag” by Bill Mandel, pg. B-3, col. 3:
Additionally, the philosophy arose that using a turn signal is just giving important information to the enemy.

Newspapers.com
26 May 2002, Fort Collins (CO) Coloradoan, “Tattle Tales” by Kate Forgach, pg. C1, col. 1:
People need a reality check, say a week navigating the streets of Boston, where drivers think using your turn signal is giving information to the enemy.

Newspapers.com
23 December 2002, The Spokesman-Review (Spokane, WA), “Huckleberries” by D. F. Oliveria, pg. A6, col. 4 (continued on pg. A&, col. 1):
Bumpersnicker: “Using your turn signals is not giving information to your enemy.”

Google Groups: rec.arts.sf.written
Translating Alien Languages
Nancy Lebovitz
Feb 5, 2003, 10:53:13 AM
(...)
Nancy Lebovitz http://www.nancybuttons.com
Now, with bumper stickers
Using your turn signal is not “giving information to the enemy”

Google Groups: rec.arts.sf.fandom
Cheering Iraqis.
Nancy Lebovitz
Apr 10, 2003, 1:52:32 PM
(...)
Using your turn signal is not “giving information to the enemy”

Twitter
Susan Pogorzelski
@SusanPogo
Coolest bumper sticker: “using your turn signal is not giving information to the enemy.” Heh.
4:54 PM · Feb 27, 2009·Twitter SMS

Twitter
Jennifer McReynolds
@JenMcRen
Contrary to popular belief using your turn signal is not giving information to the enemy. Wise up washington drivers!
7:47 AM · Aug 9, 2009·Twitter SMS

Twitter
Sean McLaughlin
@dv8sean
Using your turn signal is not giving information to the enemy. #minivandrivers
6:49 PM · Jul 30, 2010·Twitter Web Client

Twitter
Kyle Finley
@finpup
Bumper sticker: Using your turn signal is not “giving information to the enemy.” Seen in CT, enjoyed by the Finleys.
6:54 PM · Sep 6, 2010·Twitter for iPhone

Twitter
Sophia Jeter♪♬
@Liljeter
#BumperSticker : “Using your turn signal is not giving information to the enemy.” wow....lol
1:31 PM · Dec 1, 2011·Twitter Web Client

Twitter
Jessica Stock
@StockJessica
Just saw the best bumper sticker ever - Using your turn signal is not giving information to the enemy!
5:46 PM · Jul 27, 2015·Twitter for iPhone

Reddit—WordsToTheWise
Posted by u/ohsureyoudo April 3, 2017
Using your turn signal is not “Giving information to the enemy”

Twitter
Michael T. Johnson
@BasicsSuperhero
Alt Text: Picture of a bumper sticker: Using your turn signal is not “giving information to the enemy”
Quote Tweet
Hear Mags Roar 🌊🌊🌊
@Stop_Trump20
· Jun 26, 2021
12:29 AM · Jun 26, 2021·Twitter Web App

Twitter
Michael P Spradlin
@MSpradlinAuthor
Using your turn signal is not giving information to the enemy!
2:15 PM · Apr 24, 2022·Twitter for iPhone