You really are obsessed on this subject to a ridiculous degree and I suspect you are far too easily frightened when cycling,
I retired almost 32 years ago and immediately intensified my cycling to up to 5000 miles a year to keep fit. I'd bought a new car since I'd been in company cars, but that Fiat Tipo was little used. Most years I was only driving about 400 miles, only increasing that for three years while my distant father's age demanded some regular support from me.
When I sold that car at over 10 years old it had just passed 10,000 miles, but I immediately hit a problem with the new car I bought, since unlike the Fiat which could be left for up to four months unused, its battery would flatten in under three weeks.
The foregoing to show how almost all my road use has been cycling for 30 of the 32 years, all in South London and the immediate southern Home Counties which of course have been packed with traffic thoughout.
I can barely recollect ever having drivers give me even a metre, let alone 1.5 metres passing space. They cant since the roads are mostly not wide enough, are often lined with parked cars and road islands are so frequent,. but they still passed just the same usually with a foot or two space. Trucks and buses were often closer due to their width, but none ever touched the mirror that stuck out from my right handlebar by about 5 inches.
That didn't worry me, despite having to deal with some of the worst tooth rattling road conditions in this country and which i'm still putting up with while driving. I do remember just once when a truck driver was so close at speed at a pinch point that it made me jump, but immediately reflecting that he hadn't touched my mirror I realised he'd actually been near a foot away, so he knew what he was doing.
As for potholes and other road imperfections, those are mine to deal with, keeping my eye out for them and doing whatever was necessary, which certainly wasn't suddenly swerving into the path of an overtaking vehicle. I always knew where they were due to my mirror and using it, something far too few cyclists have or do. A little sample of our wonderful road conditions below, Hesiers Hill Road:
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So I don't recognise the land of cycling terror you portray. Yes some drivers pass very close, but in 70 years of cycling none have ever hit me, showing they all knew what they were doing well enough. As for what's in my way, potholes and the many sunken drains, they are for me to deal with, which from moderate speeds is easy, since my cycling is my responsibility. I don't expect drivers to do my bike riding as well as their own driving.
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I don't think it's something I'm obsessed with and I don't think I'm someone who is easily frightened.
I see the danger and I would like the risks to be minimised. After incidents that have happened to me and friends of mine, I just know what can happen all too easily and the awful consequences.
In addition, things seem to have got a lot worse in recent years. Years ago, I never had people leaning out of windows to hurl abuse at me, spit at me or even throw things at me for no reason other than for being on a bike. But now it occurs all too frequently. I think cars have got wider, people are generally more impatient, angry and aggressive than they used to be, they are distracted on phones and there is generally a lot more traffic on our roads now.
At the end of the day, we can disagree and debate on our relative levels of acceptable risk, but what matters is the bigger picture - getting more people cycling. Your description of a level of acceptable risk is such that I cannot see it as being an attractive advertisement to someone thinking about riding a bike - especially for those with young children, the elderly and most women.
The thought of buses and HGVs roaring past at less than a foot from you (which you describe as normal) will make most give up the idea of cycling immediately.
Cycling needs to be a relaxing and enjoyable activity. If you are constantly in a state of fear and anxiety about every car that comes up behind you, wondering whether they are going to treat you with due respect, or be distracted on a phone and not see you, or even maliciously try to intimidate you, it is neither relaxing or enjoyable.
If you are ok cycling along, trusting in just your experience and your faith in others to look after you, then fine for you. But please do not expect the vast majority of people to be happy with this.
We have spent a lot of time debating this now and I don't think there's much more to add. I think people who read this thread will see that your ideas of how cycling should be are not fit for mass application unless bikes significantly outnumber cars on the road, motorised traffic is seriously speed limited and there is an attitude shift in the mentality of drivers towards cyclists.
So unless some new and significant points are raised, that's where I'm gong to leave this thread.