Old people

I hate driving behind an Old person going 15 on a 30....or not turning when its their right away! Its so annoying seeing old people drive! and yesteen drivers are the ones with the more crashes! but if they arent dead they learn from that, and dont make mistakes like the ones they already made! old people just do it, then forget in 5 seconds and do it agin! i think old people should have to take a driving test! maybe not behind the wheel but at least a written exam that they get in the mail and send back! At least something!!