I wing it! Just came back from Vermont and I have no idea what their cell phone laws are for driving but it's prohibited in CT. I made a call anyway to let my parents know I was on my way home and to make sure my cat was still alive
I pretty much just wing it too. I do reserach as in how to get there, what interstates to use, etc. But not research of specific driving laws.
For instance, last time I was in NYC I had no idea that it was illegal to make a right turn on a red light. I did it and a police officer pulled me over. Luckily he understood that in LA that is legal, so he let me go and then later ever helped me find a parking space.
Right on red is legal in CT too so I'm sure I wouldn't even think about that in other states. Glad the officer was nice! When I lived in D.C. for school, I kept my CT plates and used the old "I'm just visiting and don't know your foreign ways" all the time. Those damn roundabouts screwed me up all the time and the traffic lights are in a weird location (off to the sides instead of straight ahead). I went through more red lights my first month in D.C. than the rest of my life combined!
Its pretty interesting actually that driving laws aren't the same all over. And driving out on a highway, sometimes when you don't see speed laws posted, you get confused about how fast you're allowed to drive. Its different everywhere!
Thats why I like it over here in UK and Europe, pretty much even playing field..apart from the side of the road you have to drive on in European countries, but things like traffic signals, speeds etc is pretty much universal.
Generally speaking, the best rule is "go with the flow." Don't do anything that draws attention to you. Not only does that keep you off the police "radar scope" but it also discourages road rage, which has become one of the great participation sports in much of the country.
Interstate travel 
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