How is it different though? In the original picture you can safely overtake the two of them in about half the time and half the available opening in traffic compared to them riding single file.
Because the image assumes that a driver can only ever safely overtake if they’re completely in the other lane, which simply isn’t true.
It also assumes that there will be an opportunity where the other lane is completely free for them to move into it.
Overtaking eight people in a line is going to have a large time saving if they’re cycling in twos, but when you scale that down to just two then the difference is negligible and the space saving is more important.
Your theory rests on the assumption that I value my life and safety lower than two seconds the driver could shave off of their journey time. Or thirty seconds. Or two days.
Well, buddy, you're wrong.
Even if I'm riding alone I'm not riding in the gutter where I have a greater risk of puncture from debris, and a greater risk of some idiot close passing in a 3 ton umbrella.
Have a closer read of points 2 and 3 in the image. For most lanes there isn't enough width for cyclist + wobbling side to side + 1.5m margin + car. So the car needs to overtake in the other lane, which means the other lane needs to be completely free of cars.
I disagree since overtaking a cyclist in the same lane is unsafe anyway. In the city I always cycle in the middle of the lane because it prevents unsafe takeovers and dooring.
Where do you see another vehicle "waiting to pass"? There's absolutely nothing in this picture telling you how much traffic there is, how wide the road is, etc. Nothing.
What can be seen in the picture, however, is a car that, no matter the speed, is tailgating way too close. Which is a misdemeanor in some countries.
If cyclists can use the whole lane (common situation in the United States for example), it is (almost always) illegal for a driver to leave their drivable portion of the road to pass someone, bicyclist or otherwise. That includes crossing any lines, going to the opposite side of the road, being on the shoulder or sidewalk, etc.
Without a separate bicycle lane, it is not permitted to pass a bicyclist.
If a sign is posted saying 'Bicyclists may use full lane' then that lane is now a bicycle lane with cars being allowed on it for some reason. Check your car brain.
I'm not sure I'm understanding... as a driver you can legally pass by going into the opposing lane momentarily, as long as the line in the center is dashed (not solid) on your side and there is no oncoming traffic. That's kind of the whole reason the center line is painted like that, combined with those signs that say "do not pass" and "pass with caution" when the line goes solid and back to dashed.
In that scenario, that would be part of the drivable area yes. However, that is exceedingly rare in the United States at least from my experience in smaller cities/suburbia (east coast). I regularly see people breaking the law by driving on the shoulder to go around someone turning left, and illegally crossing a solid double yellow line to pass a bicyclist.
In my experience in midwest suburbia the center line is almost always dashed unless there's poor visibility (seeing around a tight curve or over a hill) or more than one lane of traffic in each direction (eliminating the need to overtake in opposing traffic). Or its a pedestrian zone, with reduced speed regardless.
True, some people break the laws. I don't see it nearly as often as you claim to, and usually not in especially unsafe conditions, but the point stands that those people are selfish and impatient. I don't see why bicyclists should have to sacrifice either their freedom (to bike to where they please and utilize existing public infrastructure) or their safety (by leaving the illusion that a full size vehicle might squeeze by at cruising speed) for such people. It's not bicyclists' fault that the infrastructure fails to serve all of its users equally.