This really has little to do with blind spots, although everyone seems to be saying things like 'And this is why you should check your blind spot!'. It's a fucking semi. There is no rear windshield. You check your blind spot by sticking your head out the damn window, which is manifestly unsafe for the driver and anyone near him. That's why they have those multiple large mirrors. This is just a case of bad mirror angle, as the title even says. Stop derping on about blind spots.