I’ve stopped at green lights quite a few times when I was tired. Worse was when I was tired-er still and ran a red without thinking about it. That was going to work!
You regular shift people don’t know the half of it. My current job has multiple potential start times, from 2 AM to 7 PM. They’re mostly grouped on the roster so that you do earlies 2 - 5 AM starts for a fortnight, and then lates, 3 - 7 PM starts the next fortnight. There are a few odds and ends in the middle of the day, but it’s mostly the early and late extremes. The shift length varies around the 8 hour mark. The change of fortnights is the killer, but I swap roster lines with someone to stay on the afternoons. We don’t have a proper night shift, thank goodness.
I really like afternoon work, starts from midday through to about 6 PM. I can do regular daywork, but repeated early AMs do me in. The early mornings are better if you have a family, you see them every day, as opposed to afternoons. I’m single, and may stay that way if I stay on afternoons. My last ex-girlfriend didn’t appreciate my work hours. She didn’t like the lack of a Monday to Friday routine either (we work every day of the year, to a roster that covers slightly more than half of the weekend days).
This is a lot more stable than the job before, where it was rostered like this every second fortnight, but with true 24 hour operation. The other half of the time was “blank line” rostered. The days off were known in advance, but the jobs only appeared a day or so in advance. You might be off Sunday, start at 6 AM on Monday - work 10 or 11 hours, have the minimum 11 hours off between shifts, start 3 AM on Tuesday, midnight Wednesday, back to 5 AM Thursday, have Friday off, start 2 PM on Saturday, 7 PM Sunday, off Monday and Tuesday, Back at 3 AM, and so forth. As long as they gave you at least 11 hours off, they could do whatever they liked with you, and you learned what the next shift was when you finished the last one. It fucked me over pretty good, but you learn that everything is relative. 4 AM tomorrow sounds like heaven when you’ve just done ten hours starting at 1 AM. Like someone who has been tortured, you get a perverse thrill when the tormentor (roster clerk) occasionally gives you shifts you like.
I don’t want it to sound all Monty Python Yorkshireman, like “we had it really tough, the roster clerks flogged us to death with a broken bottle - if we were lucky”, but fixed, non rotating shifts that you know about in advance are pretty good, whatever time they are. I did four years of the hard stuff, and it taught me to appreciate sleeping at night like the luxury it is. I think having kids would be worse, but not much else would be.