"You’re not a firework. Don’t drive lit” is a safe driving slogan that has been printed on many images. The saying is popular around July 4th (when fireworks are popular).  “Lit” means under the influence.

“You’re not a firework, don’t drive lit. Have a safe and happy New Year’s Eve from all of us at Zero Fatalities. http://ow.ly/Jrfs306GzzS” was posted on Twitter by Zero Fatalities NV on December 31, 2016. “‘you’re not a firework, so don’t drive lit’ radio traffic announcer. #WTFRichard” was posted on Twitter by In Loco Parentis on June 30, 2017. “‘You’re not a firework, don’t drive lit’ best message I’ve seen on the freeway for a while” was posted on Twitter by Gilberto on July 3, 2017.


Twitter
Zero Fatalities NV
@DriveSafeNV
You’re not a firework, don’t drive lit. Have a safe and happy New Year’s Eve from all of us at Zero Fatalities. http://ow.ly/Jrfs306GzzS
8:01 PM · Dec 31, 2016·Hootsuite

Twitter
In Loco Parentis
@MargieColes_Esq
“you’re not a firework, so don’t drive lit” radio traffic announcer. #WTFRichard
7:22 PM · Jun 30, 2017·Twitter for iPhone

Twitter
¢нαѕєє
@ChaseChaseem07
Your not a firework - don’t drive lit
7:38 AM · Jul 3, 2017·Twitter for iPhone

Twitter
Gilberto
@_og25
“You’re not a firework, don’t drive lit” best message I’ve seen on the freeway for a while
8:02 AM · Jul 3, 2017·Twitter for iPhone

KSL.com (Salt Lake City, UT)
9 best Utah highway signs
By Zero Fatalities | Posted - Aug. 21, 2017 at 8:00 a.m.
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“You’re not a firework, don’t drive lit”

Eyewitness News (Los Angeles, CA)
Public service announcement: You’re not a firework. Don’t drive lit this Fourth of July
By Danny Clemens
Wednesday, July 4, 2018
STAFFORD COUNTY, Va.—This Fourth of July, one clever road sign is reminding revelers to make good choices as they let freedom ring.

“You’re not a firework. Don’t drive lit,” read an electronic sign spotted by local resident Michael Meitz above Interstate 95 in Stafford County, Virginia.

YouTube
4th of July PSA: ‘You’re not a firework. Don’t drive lit’
Jul 4, 2018
ABC Television Stations
80.3K subscribers
A road sign on Interstate 95 in Virginia has a message to revelers reminding them to make safe choices as they let freedom ring this Fourth of July: “You’re not a firework. Don’t drive lit.” https://abc7.la/2KzTXCn

WFXR-TV (Roanoke, VA)
‘Don’t drive lit’: VDOT reminds drivers not to drink and drive
by: Hazelmarie Anderson
Posted: Jul 4, 2020 / 12:03 AM EDT / Updated: Jul 4, 2020 / 02:57 AM EDT
ROANOKE, Va (WFXR) – The Virginia Department of Transportation (VDOT) is creatively persuading drivers to be careful on the roadways on this July 4th weekend.
(...)
It’s a sign that says, ‘You’re not a firework, don’t drive lit’.