Well, they are usually there pretty quick. Lots of accidents on that corner every weekend and to be honest it's not usually because someone was speeding. I have not seen the corner in person but from the video's it looks like the corner has a weird combination of terrain and angle that make a lot of folks over shoot it, or in a lot of circumstances they low side and then it sends them into the dirt. That circumstance there was all rider, no doubt, but LEO's can't ticket someone for not having a complete skillset until after the accident happens in a lot of cases (thank goodness for a lot of us riders who have a lapse of sanity from time to time).
When I was riding through Mulholland with Rob last year, I didn't even realize we passed through that turn until we stopped afterwards and Rob pointed it out. There is nothing impressive about it except for the amount of stupid it attracts. It's cambered properly, goes uphill when making a left, and there's plenty of visibility to see what's in front of you. Can't get much easier than that, but people still crash all the time there. Mostly likely due to the amount of cameras pointing at you.
If you have ran the turn multiple times you realize why it gets people where it does and ill explain why.
- Going uphill...The into the guardrail at the beginning of the turn. The road crowns going uphill on the straight just before the turn starts. So when you are coming up its semi blind where the turn starts. Often people are going too fast on entry and or get scared when they go OH SHIT that turn came up quicker than i thought.
- Going uphill ... the lowside past mid way through. The turn is SLIGHTLY decreasing radius and it catches people off guard. They thought they were going slow enough or could manage the turn and half way through they start to panic.
- Going downhill 75% of the way through the turn, lowside typically. There is a decent dip at this point going downhill, pair this with a spot where people typically start to accelerate, wala insta crash.
As far as who is at fault... 100% the rider here... he had SO MUCH time to avoid that accident.
It's only a matter of time before the authorities do something about this particular part of the road. Go ride it while you can!
The authorities typically have a strong presence right around this road on a weekend day, they will sit and monitor riders and cars for the busiest of parts of the day or stay close around (like a mile away on mulholland on the other side of kanan) in the not so busy hours. They do a pretty decent job, they understand that we are out there to have some fun within reason, if someone is being blatantly stupid they have no issues being harsh. but for the most part it just keeps everyone in line.
Back in the day the actually would shut this section of the road down on weekend days for this very reason too many accidents.
Now if you really want to go out there and play, tuesday - thursday mid day... absolutely NO ONE will be out there and you can have the place to yourself.