By far, the worst drivers of cars are in Amish Country. One of them gave me the finger the other day while cutting me off. As he sped of at about 115 miles per hour I caught a glimpse of a LCD screen in his Cadillac. Then he intentionally hit a deer, got out, threw it in the trunk adn drove away.
For driving in bad weather conditions, I’d have to say Seattle area is up there. You’d think with all the rain we get, people would learn how to drive on wet roads, but NOOO!!!
The prevailing notion is: 5 miles over speed limit on bare, dry roads, 15 miles over on wet roads, 25 miles over in snow, and on ice, the sky’s the limit. One local (now defunct, alas! [Almost Live]) tv show put it perfectly when they said “As soon as that first snowflake hits the highway, all the semi’s jackknife.”
OK, we really don’t get snow that often, and Seattle only has 12 snowplows for a city of more than 450,000, but you’d think common sense would prevail – but again, why call it common sense if no one has any?!?
OK, rant is over now.
Ugh, anecdotes. Any word on hard figures from the missus, Badtz?
I think Avocado has it right:
>>I think it’s whatever city you live in or have experience with.<<
In the late ‘80s, I drove a truck over the road for three years. I’ve been in every major city, in every state, and some cities often. I can’t say I ever noticed any regional differences, though the NoVa/DC area seemed bad. Semis aren’t allowed within the Beltway, so I was only on the freeways & ring roads. Try driving a 60’ long, 13’6" high vehicle that bends in the middle through an unfamiliar city - I can tell you, you’re really paying attention!
I have to say, California drivers are THE BEST freeway drivers in the nation, overall. When I moved to Colorado in '85, I was appalled at how bad they were here. (Getting nervous on on-ramps & stopping, 53 mph in the left lane, rude, etc…)
Having driven alot in Europe, and also in Egypt, Turkey, and Israel, I can tell you for pure Combat Driving Fun, try the Middle East. Especially if you’re a woman! Hehe. 
Okay, this is coming from someone who has never even been there, but a friend of mine lives in St. Louis and has complained to me on multiple occasions of the dearth of snow plows there. Apparently, the city of St. Louis owns a whopping two plows, which isn’t enough to keep the streets clear during the winter, making driving conditions, and therefore driving, terrible.
I have yet to visit a place in the US where I was shocked by the terrible driving, but I have never been to Boston. 
I have been to Egypt, though. :: shudders ::
I read somewhere that Atlanta was the worst. I lived in the Blue Ridge mountains for a year (In 1998), and whenever I drove down to Atlanta, I would inevitably see several accident scenes roped off with yellow tape. And the drivers acted like they got their driver’s license out of a cracker jack box; no driving skills whatsoever. Combine that with speeding and it’s deadly.
I also lived in Upstate NY for 9 years and I have to say the drivers there hold the world’s record for tailgating. I’ve lived all over (18 states) and they are absolutely the worst in that regard.
I grew up in Fairfield, CA and it used to be a small farming community with mellow drivers. Last year I was crossing the bridge from Rt. 49 over to Napa and a guy who thought I was going too slow, cut me off and slammed on his brakes, throwing my baby son forward and injuring his neck. When I looked up, he was looking in the rear-view mirror shrugging his shoulders and smiling.
In Tennessee, the logging truckers will try to kill you if you try to pass them on secondary roads, even if they are going 15MPH. I decided they have to be psychos to get that job after one tried to run me in the ditch. Pathetic.
So, I could go on, but I guess the conclusion depends upon what criteria you use. Does anyone have anything good to say about their experiences?
I’d also like to see some hard figures–it would be interesting. But statistics on accidents, tickets, etc. would only tell half the story. (For instance, maybe a particular city has fairly competent drivers but suffers from frequent bad weather or poor street planning.)
My own anecdote: I went to college in Boston. Bostonians tend to be friendly people. I certainly have nothing against them. I have mainly warm memories of the place.
Yet it was a nightmare town for a pedestrian. On numerous occasions people seemed to be trying to run me down. I don’t think I was just imagining it. My sister and I were walking on the sidewalk in Porter Square once when someone ran a red light and went up on the curb about six inches from my toes! My roommate’s girlfriend was hit by a slow-moving minivan, and my first-year proctor had his foot crushed by a tire. Maybe it’s not intentional, but jeez . . . you start to wonder.
I know I saw an article in the Boston Globe about a year ago that said that Boston had the 3d least accidents involving pedestrians of major cities in the US. I don’t have any real hard stats to back that up, but that’s what I read.
As a Boston driver, I would say that we’re bad if you’re not used to it, but once you know what you’re doing, it flows pretty well.