This happens repeatedly. I’m trying to turn right into a divided highway. Nobody’s coming from my left. There’s no kid on a bike from my right. So I start to go. I forget to check for another driver from my right making a U-TURN into the lane I’m trying to enter. Is this common?
I once was ticketed and had to pay a fine for having a drivers license from a different state than the state my car was plated in. I’m a menace to society, a threat to public safety, and an endangerment to civil order. Luckily the police are protecting you from the likes of me while you sleep.
I even told the cop I was going through a divorce and had no lawful power to re-title the car, but it didn’t matter.
I was stopped behind another car waiting to merge onto a busy multilane road.
Twisted around, looking backwards for my opportunity to merge. Lot of traffic and I sat there a couple minutes.
I see my chance, take my foot off the brake and bump!!! The car in front of me was still there. I just assumed she had seen the break in traffic too and had already pulled out and left.
I’m just thankful that I hadn’t hit the gas to accelerate. That would have been very bad.
Just like a month or two ago in San Francisco, I came to a full stop at a red light, then started when the light turned green and made it about fully into the intersection before realizing that the cars behind and beside me hadn’t moved, and then realized that I was looking at the light at the next intersection. The one at mine was still red. After stuttering for a moment, I got the hell out of the intersection while frantically looking both ways.
I was shaken, and very lucky that there was no cross traffic, since I’d have been T-boned and it would have been 100% my fault.
Made right turn without checking right lane, got hit by an SUV. On top of that, forgot to get collision coverage. So, $2,500 loss.
Driving after having a few beers and not wearing a seatbelt. These mistakes ultimately lead me to becoming a paraplegic. :o
Shit, that sucks. Sorry, not trying to make light of it. I didn’t realize that’s how it happened, Amb.
Waiting almost five years, while also not multi-focusing, isn’t great either. 
Me, plenty, and fortunately the consequences weren’t real bad. I’ll share two.
I wear eyeglasses all the time now but in my late teens / early 20s I didn’t need to. My vision was getting a little fuzzy but if I needed to make something out I’d squint to sharpen the focus. Well… I often didn’t see the highway patrol cars while also liking to drive fast. I got a lot of speeding tickets and once I almost got my license taken away because of points. I appeared in front of a judge, begged mercy, and he didn’t take it. Soon after that I started need the eyeglasses regularly and - lo and behold - I could easily see the highway patrol cars! My ticket frequency dropped dramatically. Still they cost a lot of money.
Second is, once while backing into my own driveway I backed into and knocked over my own motorcycle. Fortunately no damage, but I was mad at meself for a while there.