I am about 1.85m tall and about 100kg. I don't disappear like a sheet of paper when you see me from the side, and I'm pretty noticeable from the front and back. Often, I'm wearing a bright fluorescent orange waterproof jacket. People walk entirely the fuck into me all the the time. Not even on their phones or anything, and not "glancing-shoulder-bump" but full on walk-straight-into-guy-standing-there.<p>My daily driver is a big noisy old Range Rover. Okay, dark blue is maybe not the most in-yer-face colour, but it's quite loud and it's easy to tell when you're near it. People walk out in front of me, all the time, or pull out in front of me or hop their bike off the kerb in front of me, all the time.<p>My occasional work Landrover Defender - I don't often drive it, I've already got a tremendously capable off-roader, but sometimes I need to use the big roof rack or we need two 4x4s for a job - is literally Fire Engine Red, covered in red and yellow high-vis, and has big blue strobes on it (that we normally don't use). People walk out in front of it, pull out in front of it, hop their bikes off the kerb in front of it... did you guess "all the time"? Right, I knew you would!<p>The more visible you are the harder you are to see. I don't know why.