The fact that the situation on the ground isn't safe in practice is irrelevant to the law. Legally the hedge is doing everything, so the blame falls on the driver. At best a "tragic accident" will result in a "recommendation" to whatever board is responsible for the rules to review them.
Which is why if you want to be a bastard, you send it to the owners, the city, and both their insurance agencies.
If those certifications try to teach you bad approaches. Then they don't help competence. In fact, they can get people stuck in bad approaches. Because it's what they have been Taught by the rigorous and unquestionable system. Especially when your job security comes from having those certifications, it becomes harder to say that the certifications teach wrong things.
It seems quite likely from the outside that this is what happened to US traffic engineering. Specifically that they focus on making it safe to drive fast and with the extra point that safe only means safe for drivers.
This isn't just based on judging their design outcomes to be bad. It's also in the data comparing the US to other countries. This is visible in vehicle deaths per Capita, but mostly in pedestrian deaths per Capita. Correcting for miles driven makes the vehicle deaths in the US merely high. But correcting for miles walked (not available data) likely pushes pedestrian deaths much higher. Which illustrates that a big part of the safety problem is prioritizing driving instead of encouraging and proyecting other modes of transportat. (And then still doing below average on driving safety)
You would be mistaken. Traffic engineers are responsible for far, far more deaths than software engineers.
That we allow terrible drivers to drive is another matter...
Vehicles are generally temporary. It is actually possible to ensure decent visibility at almost all junctions, as I found when I moved to my current country - it just takes a certain level of effort.
That said, obviously care should be taken to limit occurrences of view limiting obstacles whenever possible, especially in areas frequented by unskilled traffic participants—so pedestrians, really. A straightforward example would be disallowing street parking within a few tens of metres of pedestrian crossings. Street parking in general is horrible, especially on quiet residential streets—kids may dart around them onto the street at full speed.
The problem is not limited to large vehicles either.
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Anyways, here are some examples of what I'm talking about:
- Self-inflicted LOS issues by passing/filtering (motor)cyclists: https://youtu.be/qi6ithdYA_8?t=861, https://youtu.be/TRPYfHzQSFw?t=644, https://youtu.be/WgaWwWUYX64?t=200, https://youtu.be/WgaWwWUYX64?t=209, https://youtu.be/vYrxbdhLEN0?t=1083
- Cars obstructing view of an intersection: https://youtu.be/swmt44N9DJc?t=307, https://youtu.be/ejqpeFyqNz0?t=258, https://youtu.be/veLDLUXLrdQ?t=8, https://youtu.be/q46XoynHTpM?t=109, https://youtu.be/q46XoynHTpM?t=1016, https://youtu.be/m8jk2H7a-BI?t=70, https://youtu.be/9tgMe3CurNE?t=558, https://youtu.be/QCALZbDC_i0?t=172
- Cars obstructing view of a pedestrian/cyclist crossing: https://youtu.be/axCAi7Cjh2g?t=12, https://youtu.be/MReD5mieJ1c?t=1071, https://youtu.be/14c-iwZUh9M?t=5, https://youtu.be/Mzs0izUSoFo?t=14, https://youtu.be/vT7uI6EBQRM?t=238, https://youtu.be/O7UIACa35KY?t=366, https://www.youtube.com/shorts/IQHWUEPEwcg, https://youtu.be/vYrxbdhLEN0?t=551 (watch the whole video, it's very instructive)
- Pedestrian behavior around buses: https://youtu.be/oxN0tqO9cSk?t=8, https://youtu.be/03qTXV4aQKE?t=709
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And counterexamples, showing proper driving:
- Obstructed pedestrian crossing: https://www.youtube.com/watch?v=OThBjk-oFmk (I said proper driving, not proper cycling)
- Around a blind turn: https://youtu.be/86-qjb_m43A?t=294
- And to top it off, obstructed pedestrian crossing plus a bus: https://youtu.be/RpB4bx63qmg?t=439
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As you can see, LOS issues can pop up anywhere and there is no way to "fix" it. You have to adjust your behavior accordingly. You can't drive "optimistically", assuming nothing's there just because you can't see it. That's like closing your eyes and flooring it. Can't see nothing, therefore nothing is there!
I mentioned this principal to the traffic engineer when someone almost crashed into me because of a large sign that blocked their view. The engineer looked into it and said the sight lines were within spec, but just barely, so they weren't going to do anything about it. Technically the person who almost hit me could have pulled up to where they had a good view, and looked both ways as they were supposed to, but that is relying on one layer of the cheese to fix a hole in another, to use your analogy.