I agree with you that it was preventable.

However, without being able to rely on all drivers to act in their or other best interest - driving east bound there are a few roses that are complete blind spots and only once you are almost at the crest, can you see.

There are accident from left turns due to the rise and blind spot- this is what I speak of.

Last night was a fluke, however, in searching for the accident- I discover many accidents and this route gets their fair share.