Which country are you from (if you want to answer)
Do traffic cops sit on the road and trap speeders that way?
Do you have cameras in certain places and then receive a ticket in the mail a while later?
Yes. For sure. Down the road where I am, two major roads cross. There’s two traffic cameras there xD
There’s also this thing in the Bay Area (Northern California) called “FasTrak.” It’s basically a monthly subscription to use these automated payment lanes at toll booths. But they’re monitored by cameras, so if you go through it without a FasTrak subscription, you get mailed a bill. They’ll check your plate against their system I guess.
Are your cops easily bribed?
I’m not sure. Where I am though, I would say no, they’re not.
Which side of the road do you drive on?
RHT (Right Hand Traffic)
Are stop streets common? Are robots (traffic lights) common?
Depending on the road, yes. The major roads are typically controlled by traffic lights and the smaller, suburban roads have stop signs instead.
Anything particularly interesting/specific to your country?
The US does not have a lot of round-abouts. As a result, a lot of people are nervous/unsure when it comes to entering them/using them. Literally, in the pamphlet teaching us how to drive, they have one tiny paragraph that basically tells you “Yield to traffic in the circle.” Nothing about what to do if an emergency vehicle is behind you as you enter the round about.
In the Netherlands, if you enter a round about with an emergency vehicle behind you, you’re supposed to make one more trip around the round about to let the emergency services go to their exit first.
Edit1: added more to question 3.