A relative of mine that drives a CDL A and has about every endorsement you can get on his license told me a story about medical cards that just about made me **** myself. When medical cards first came out as a requirement he was being inspected by the DOT and of course he hands over his medical card when asked and the cop looks at it and then says "I can't read your doc's signature" and then proceeds to tear it up in front of his face. My relative then proceeds to almost get arrested from his telling the cop what he thought of this and comes to find out it is completely legal for them to do that since its considered invalid anyway with out a legible signature. Now if you know anything about doctors you know that writing legibly isn't something that’s taught in medical school, just ask a pharmacist that has to read a hand written script! My relative is diabetic anyway so seeing his doctor on a regular basis is something he does to stay alive and on his next visit he asks the secretary to give him some forms for the dot card. She does and he has from that point forward always filled them out himself. Just goes to show you that even when you try playing by the rules they can change them anytime they want.