Stop here and we will slam turnpike at the roof of your car

Another non-official road sign designed with high attention to details. Here it is: “Stop here on red and we will slam railroad turnpike at the roof your car and six particles of it will be airborne”.
Design Fail factor: 6 (out of 10)

Study aid fail.

My heir has lots of stuff that is supposed to teach him how to count – these little cards are just one example. All those study aids, however, are overestimating the human perception quite a bit: while it is immediately obvious how many items are on the 1, 2 or 3 cards, may be on [...]