The new driver

The new driverA policeman pulls over a car with a new driver.... Policeman: "Ok Miss, this is a 55 MPH freeway -- why were you driving so slow?" Driver: "Officer, I saw a lot of signs that said 22, not 55." Policeman: "Are you a new driver?" Driver: "Yes, I just got my driver's license last week." Policeman: "Well, Miss, that's not the speed limit, that's the name of the freeway that you're on! You are driving on the 22 freeway!" Driver: "Oh! Silly me! Thank you for letting me know. I'll be more careful." Then the policeman looks in the back seat, and he sees that the new driver's friends are shaking and crying! Policeman: "One more thing, Miss... what's wrong with your friends back there? They're shaking really bad, and they are crying!" Driver: "Oh, it's nothing serious, we just turned off of Highway 125."