Learn to google. Googling speed limits interstates accident rates got me the first one, and variations thereof, Adding -purdue got me the second. It would also have eventually produced contrary results if any existed. Of course, I'm not going to sit at google adding fifteen hundred -words just to reinforce or refute those articles. I don't even drive.
What about the communist plot to undermine our great American nation from within by planting their agents in our movie studios?
Sad part? That is the extent of my knowledge about 'communist' activities. Mah school hadn't done gave me some book learnin's!