This is found at on-ramps as you accelerate up to highway speeds 80 plus.
Usually you come from a residential 50 zone and must speed up to 80 BEFORE you enter the highways first lane.
Testers often notice this sign for the first time, during their exam.
Its posted between the 50 and 80 zone and MOST TESTERS only see the number 60 km/h and ASSUME its a maximum speed sign.
Then they stay at 60 and fail.
In fact this sign tells you the OPPOSITE.
You must go OVER 60 ASAP!
Great way to fail.