We drove by there about 12:30pm when the FD was still cleaning it up. From the damage to the Hynudai, it was pretty clear that someone had been a) massively speeding, and b) didn't even try to stop at the stop sign.
On the bright side, none of the cops/fire had that 'I saw a dead body' look on their faces, so it seemed likely vehicle safety features did their job.
I don't think it's a dangerous corner, or that the traffic justifies a light. It's just drivers doing stupid things. And even normally good drivers get distracted on vacation, especially when they're unfamiliar with the local roads.