SICA
 

What does it mean?
I drive all over the country and see it everywhere.

Dave,
In relation to what??

http://www.sica.it/images/2016/03/18/LOGO_SICA_SLIM.png

https://http2.mlstatic.com/lampara-l...7_092015-F.jpg

http://www.chuanyee.biz/wp-content/u...d-Tomatoes.png

or do you mean

http://resources.mynewsdesk.com/imag...psnxavsiez.jpg

or even ;)
https://www.thestalkingdirectory.co....5&d=1267125817

Probably these guys, if you're seeing it while driving anywhere.

It's sprayed all over the place as in graffiti.
On the A1 coming down from Gateshead it's every few miles

After extensive research, I've concluded it's a global meme common to morons with aerosols as far away as the land down under:
https://imgur.com/gallery/baLXD

As to what it actually means, even urbandictionary's explanation strikes me as pretty implausible in this part of the world.

Silly Idiot with Can of Aerosol

I hate graffiti

Me too. In Hull recently banksy did one and there was outcry when his was graffitied over.
Double standards worthy of liberal lefties. LOL

It’s graffiti ,
But it has a meaning , means immigrant , non English cultural ,
Theory is the guy or guys spraying it are east European lorry drivers , they tend to be on motorway bridges , or walls , even farm outhouses not to far away from motorway service stations or truck parks / if you have any info contact the police / there is a reward for these douch bag low life’s