Just owning them or actually using them? What are the fines?

Also, most state highway signs are unique for each state, with many including an outline of the state.

California has done searchs for ‘bugs’ before but don’t know if the still do.

I guess that is not "Bugs" as in butterfly?

I used to live in the US and travel a lot by car. The infrastructure, specifically the roads, their striping, their guardrails, etc. could change drastically at state borders. They could sometimes even be of different quality and material at county borders within a state.

You should bounce from Alabama to Mississippi, night and day difference, which is funny because Americans lump the two states together.

We drive hundreds and hundreds of miles a year through backwoods Alabama highways, thence into Mississippi. There is one short stretch where the road is messed up. Going into Mississippi, the road turns to crap instantly, even the US highways are somehow underfunded.

Gas stations in AL are neat enough, in MS there's trash flying around everywhere. For that matter, you can tell by the small towns. Alabama side? Generally charming, though poverty is bad. Pass into Mississippi? Next town you come to will be a wasteland of poverty and ground down infrastructure.

Forest drops quickly in favor of farmland. AL is the most forested state in America. MS countryside looks more like Oklahoma.

Going from Florida into Alabama, you really can't tell without a sign, and there usually is one, or Google Maps announces it. The landscape and forests don't change until you've gone a ways north or west. Takes awhile to start seeing hills! Florida's the flattest state in America.

Thankfully, I’m protected by my radar detector detector detector.

Everytime I cross into Ohio I feel like I'm losing the will to live.

I'm up in Canada and we have provinces here ... I live in Ontario and in the year 2000 me and a friend took a motorcycle ride across Canada to the west coast. Great trip.

But for motorcycle riders in Ontario, especially northern Ontario, its famous for rain during the summer, especially when you want to go riding. Sure enough in the first week of July that we started our trip, trying to make sure to catch the best weather for riding, we rode through rain for about three days as we drove through northern Ontario.

The funniest thing was ... as soon as we crossed the Ontario/Manitoba border, the skies parted and I could literally see dark clouds over Ontario and bright clear summer skies to the west .... right at the border of the two provinces.

We had great weather the rest of the trip! ... and sure enough when we did the return trip, we were rained on again in northern Ontario!

California still maintains agricultural inspection stations. Based on the FAQ, I think the legal workaround they're using is that they can deny entry to a vehicle until it is inspected even though they cannot, strictly speaking deny entry to people.

The time on my phone changed.

Coming from PA. As bad as MD roads are ours are worse

you know, most roads will tell you. The change in asphalt for sure will tell you exactly

plus for me at least, Idaho is different than Washington

the roadside advertisements is instantly different

the highways are laid out in much different ways

the people are absolutely different almost to an extreme

Max speed limits can vary by states.

Crossing into Wisconsin from Minnesota, I will start seeing lots of fireworks stores.

There’s a spot near me where 3 intersect right on the road. The pavement is in a different state of disrepair for each. You can see it and hear it driving along.

this is such an adorable question.

Crossing into Wyoming from Utah is hilarious for this. Suddenly there's porn, cigarettes, beer, fireworks, and more porn!

I once lived in a small city right on that state's border. It was sort of a suburb tho to a very large city in the neighboring state. The major roads would have signage, but on the smaller roads there really wasn't any way to tell. The main difference tho was that the large city's public transit options extended pretty far out even into the small towns along the border, but wouldn't at all come into my small city..

Where I live now, you have to cross a very large river to get into the neighboring state. What's worth sharing here tho, is that there is a nearby county line, where even tho there's a sign, you don't need it at all. The landscape/biome changes pretty much at the county line.
It goes from a sort of temperate rainforest-like climate, to arid grassland/high desert climate. You'll be driving thru areas with large, old growth evergreens and lots of ferns underneath, and then it turns to dead, dry, brown grass and sagebrush shrubs everywhere. Like, it could also even be raining the whole first part of the drive there, but once you get to this county line the rain almost always dissipates. It's pretty wild.

My state disallows billboard advertising, which I forget until I cross into another state and have to suffer through Jesus and injury lawyer ads.

My southern neighbor: