Watch Out
Source: trendtwitter.com
While it’s amusing to see a sign of this size hanging before a bridge, it’s actually probably one of the most useful on this list. It’s common for trucks and other large vehicles to misjudge the height of bridges, causing them to become stuck and damaging the car or even the structure of the bridge itself. At least, with the aid of this road sign, they get a warning! The majority of people in normal-sized cars, however, would find this monstrosity funny.