The Innocent Man

One day, a motorist was arrested for driving at a very high speed. He was presented before the judge. 

The judge asked him, "Do you want to say something"

The motorist said, "Sir, I am innocent."

The judge asked, "Didn't you read the traffic signboard, 30km/hr?"

At this, the motorist said, "Sir how could I have read that message when I was driving at the speed of 60km/hr?"