Case study in “Speed limit signs don’t set the speed drivers feel comfortable at, only suggest it.”

Street design is critical.

Clearly, they set the speed limits wrong.

As someone who lives near Oakland, I'd caution to take these figures with a grain of salt. There are definitely plenty of awful drivers, but there's also a significant amount of anecdotal evidence from the community that a number of these cameras are miscalibrated. There's one in particular that's clearly within a posted 35MPH zone that snaps images of people going 25.

Come to Orlando and be equally as or more shocked

Seems typical. But we can't know without total traffic numbers to compare to. Is that 12k out of 1m, 100k, 20k?

If they were concerned about speeding and not just an excuse for surveillance and money via fines, they'd install speed bumps

Oakland isn't a total disaster and you have no comparison for the statement, just a will to say bad things about somewhere you've never been. Grow up, mature a bit, and learn how to be critical instead of hateful.