In a surprise move, Transportation Secretary Ray LaHood stepped down this morning and announced he will be replaced by a collective of super nerds. Their first act is to institute these new equation-based speed limits.
The new "math-centric" signs are designed to help raise the nation's poor standing on education. Jalopnik interviewed one motorist passing by this prototype sign outside of LA who told us, "I get pulled over here all the time! The sign says ninety, right?"
(Hat tip to Patrick Di Justo!)