Besides the obvious “welcome to [state name]” sign. Is there a significant change in architecture, infrastructure, agriculture, store brands, maybe even culture?
Because they go through the door in the border wall to Mexico.

Street signs in Wisconsin and Illinois differ
The other big thing for knowing I’m in Illinois is seeing gasoline and diesel prices significantly higher than in my state. It’s not just fossil fuels either, charging my EV in Illinois makes it cost more than fueling my wife’s SUV in my state and driving the same trip. The roads aren’t much better either for the higher taxes either.
And toll roads…
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Everytime I cross into Ohio I feel like I’m losing the will to live.
My friend visits chicago to Dayton Ohio often, he says the roads turn to shit the moment he crosses over to Ohio lol
I feel that too, and i live here :(
My crossing is a river, so basically pretty obvious. I was out of town on a work trip though and I was warned that when I was going to a Home Depot to not miss the turn because I would be at the Canada border and doing a U-turn there would probably get me chased down and pulled over.
From the US to Canada, suddenly the signs are written in French (and Chinese too in Toronto airport).
Mexico, the signs are written in Spanish.
Yeah, that’s what I notice
One comment mentioned that some things are legal in one state but illegal in another.
And I also remember that laws in general are often quite different between states.So, I am wondering if there exist some kind of controls near state borders to catch illegal stuff and practices (or even wanted persons?) crossing the border?
This would become quite a thorny constitutional issue very quickly. The 14th amendment explicitly specifies that one state can’t try to prosecute someone for something done in another state that was legal there but is illegal here. This has further been interpreted to mean that interstate travel as a whole is a protected right, and any form of checkpoint or other hassle-station on a border between states would surely also be a 4th amendment violation.
That’s not to say some idiot won’t try it eventually, especially given the current political climate, but up until now it’s not done as a matter of course.
A state neighboring mine got in big time hot water a decade or so ago for stationing their own cops in our state and tailing people out of liquor store parking lots with the aim of harassing them over the minutiae of the differences in liquor laws between the two. Obviously that didn’t fly, because that state does not have jurisdiction here which means they have no grounds for a stop or search. Likewise, entering another state is not legal grounds for a stop and search unless that state’s law enforcement already has some manner of articulable probable cause.
Ok, expected this to be covered legally somehow.
Also as I assume that freedom of movement would be a value you are regarding highly in the States.
Not typically. You’ll see police along the major highways for speeders and the like but no state border patrol like that. Legally often transporting across state lines is a crime in and of itself but it’s one of those things where they look the other way unless they catch you using whatever item.
Often this is done for practical purposes, because if it’s legal in the state you started in, and might be legal in your final destination, they’d piss off more people that not of they stopped and confiscated from everyone.
Makes sense. Would also just generate work for the police forces with probably only low level violations to be uncovered.
Being practical is a good approach.
Yes! When you cross into Virginia one is greeted with signage expressing radar detectors are illegal.
Just owning them or actually using them? What are the fines?
It’s illegal to own one in Virginia. If you’re from another state where they are legal you’re supposed to take it off your windshield or at the very least turn it off if you have a more built-in kind. I remember they used to be relatively common in the ’90s and early ’00s but I really don’t see them very often anymore, so I don’t know if that’s as much of an issue nowadays.
Do those detectors even work against LIDAR? A lot of police use that now anyway.
Keeping in mind that I haven’t looked into this in over 20 years, back then the answer was technically yes but practically not really, or at least not well, and I’d be surprised if the answer has changed much in the intervening years. Radar has a fairly wide beam and most systems, at least at the time, would just leave it on all the time, so it would be pretty easy for a radar detector to pick up the signal while it was targeting other cars, well before the car with the detector would be targeted. This would typically give the driver time to slow down before they were targeted. By contrast, LiDAR uses a much narrower beam. IIRC the width of the beam even at some of the farthest effective distances was still about 3-feet (≈1 meter) wide or less, and the officers were trained to aim at where the front license plate would be. That meant it was quite likely that the targeted vehicle would absorb or reflect most if not all of the signal. On top of that, the LiDAR guns would only be active for a few seconds, so even if there was rogue signal that made it past the targeted vehicle there would only be a very limited window for the detector to observe it. It’s absolutely possible for the detector to pick up the frequencies being used, but more than likely if it was detecting a signal it would be because an officer was in the process of getting the vehicle’s speed so any alert would be coming too late.
Yes indeedy! And to turn on your lights if your wipers are on, and to buckle up, and your speed may be monitored by aircraft. But pay no mind to the aircraft signs. The program ended up being way too expensive and they just never took the signs down. But do watch out for those cut throughs between the trees along the interstates because staties absolutely are hiding in there hoping for easy pickins.
And some have radar detector detectors. Turn your device off if you don’t want an extra $100 added to your speeding ticket.
Thankfully, I’m protected by my radar detector detector detector.
I still like to imagine fighter jets or attack helicopters swooping in to blow up speeders, or in more modern times drone strikes
This is perfect, because I vaguely remember the Virginia signs reading, “ speed enforced by aircraft.”
they used to search all cars entering minnesota from wisconson for fireworks until the courts ruled that was illegal without a warant for the specific cars to search. This was around 30 years ago. California has done searchs for ‘bugs’ before but don’t know if the still do.
in every case I’ve seen you don’t see any difference but locals know and will bicker over trivial things like sport teams or best state bird.
California has done searchs for ‘bugs’ before but don’t know if the still do.
I guess that is not “Bugs” as in butterfly?
It is stated to be literally for bugs, as in insects, for agricultural protection reasons. It’s in quotes though, because typically the real purpose of such inspections is to “accidentally” find other contraband “in plain sight” during the thorough inspection for “bugs”.
Ok, this is bonkers. Although the risk of contamination with foreign insects via transit is real (we e.g. imported the Tiger Mosquito from the US via tire shipments from the U.S. into Europe some years ago…), using that as an excuse to search passenger cars is quite a stretch…
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 inspection station I pass by is still there, but it’s been literal years since I’ve actually been stopped or even seen it manned. I don’t make the trip regularly and have always been in a sedan, so maybe I’ve just been lucky. Though my guess is that funding cuts have hit them badly.

Ah yes, CO to NM
It’s Nebraska.
¯\_(ツ)_/¯
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field on one side, field on the other. if I am on the interstate, the surface gets really shitty on our side because brownback and the republicans in topeka drained the highway fund to give the koch bros and fat corpo-farmers a tax break.
I travel a lot throughout the US, and sometimes the changes are obvious while other times I can be driving and not entirely sure which state I’m in just from looking around on the highway. As others have said while driving on a major highway a clue can be a huge store full of items like fireworks just across the border from a state they aren’t legal in.
The geography and environment can certainly be a big clue. Driving through West Virginia there are tunnel through large mountains, Pennsylvania around the Pittsburgh area has steel bridges, Louisiana has highways raised up from the muck, there are mountains that the highways wind around in North Carolina that give way to pretty flat highways as you go south. Kentucky has long depressing stretches of straight boring road. I’ve noticed even traffic patterns can say things as Georgia highways always have a higher number of semitrucks than anywhere else for example. Nevada is flat and open but as you go into Utah it gets windy and rocky, and cell signal usually goes out for a bit.
Staying in different states I notice alcohol sales rules are different. In some states you basically don’t see any alcohol outside of designated stores for it including no beer at gas stations, in other states you see beer for sale widely but hard liquor only at designated stores, and in other states hard liquor at WalMart is perfectly normal.
I’ve found on the whole that people are actually nicer than average in Utah. While coffee shops exist I have noticed in offices there is often a lack of a central coffee machine.
Louisiana everyone I deal with from there has a tendency to be much more relaxed than average about showing up exactly on time for things. Louisiana itself also has a cultural divide between the northern part which is more generic US south, and the southern part which has the more creole and tourist heavy atmosphere.
I honestly don’t mind Ohio. I know it’s an internet meme to hate it, but aside from their obsession with dumping chili on unrelated foods it’s decent. Has a strong blue collar streak kind of like Pennsylvania culture.
Texas has a big cowboy influence and they don’t let you not know it. The roads tend to big big and wide which is great, except the freeways especially in Dallas can become confusing multilevel nightmares.
California has lots of Spanish signs, lots of first generation Mexicans who bring culture with them. Lots of for example Mexican super markets. Californians have a culture of going FAST on freeways if there isn’t gridlock traffic, in some cases going 100mph just barely keeps you up with traffic.
In NJ all the gas stations are full serve only. If you try to start pumping your own gas the attendant will start yelling at you telling you to stop
I often get away with taking the hose out when the pump is done, they don’t seem to care about that. Usually quicker than waiting for them to walk back to my car. Only time I appreciate the full service is when it’s cold as fuck out or just bad weather in general.
Welcome to Michigan. Come buy some cannabis. Signs every where
I cross a bridge over a river
When driving through the Kansas City metro area, the road that splits the two states is literally named State Line Road. Everything looks the same on both sides of the road.
Otherwise there tend to be signs on roads welcoming you to whichever state depending on the direction you are going. Those signs used to match up with a change in road maintenance quality but Kansas decided to join the race to the bottom so it isn’t as noticeable anymore.
I pay money to cross a large river.
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.













