Step 11: Safety precautions
Rule #2 If you are unable to enforce rule#1, force the child to look up before crossing, and then guide him across like a blind person. Reading is like sleepwalking, he is in another world. Try to be kind and wake him up gently.
Rule #3 If you let your child out by himself, make sure he is not carrying any books, or, if he is, put the book is a plastic bag, sealed with a knot, and give strict instructions not to open the bag till he reaches his destination.