California sign asks drivers to "Please slow drively"

A confusing sign placed outside a preschool in Auburn, California is asking drivers to "Please slow drively."

It is unclear if the sign was purposefully designed as a word puzzle meant to have drivers slow down to make sure they're reading it correctly or if it was just s simple typo, which seems highly unlikely.

As MSN Now points out, if the city's intention was to have drivers spend a few seconds thinking about the sign as opposed to paying attention on the road it might not be that smart of an idea. Thoughts?