These stoplights are so poorly designed that they got covered in snow
People who work in design are incredibly talented and innovative. They seem to have an eye for things that ordinary people don’t, which is why they always succeed in their careers and professions. However, that doesn’t mean they can’t make silly mistakes now and then and ruin their creations entirely.
In Lake Tahoe, stoplights get filled with snow because the person who designed them forgot to add shutters. Since the place is a world-class ski area, designers should bear in mind the presence of harsh winters and snow storms when creating products. The fact that someone could forget something as essential as that is surprising.