Don't put your child's name on their lunch box or where any one can see it. Abductors will see the name and then call the child by name to make the initial contact they need to abduct the child. Explain to your child that even if a stranger knows your name he still could be an abductor. If someone tries to pick you up they Must know the secret word. If they do not know the word then don't ride with them.
Bus stops are common areas for abductors to use.
Telling them that the bus broke down and they are there to pick up the kids. Or when it is raining or snowing offering them rides to get them out of the elements. Teach your child at a young age how and when to use 911. Make sure he knows his full name and yours, the complete address to your house, and your phone number. Let your children know that if someone touches them in there private areas that they should let you know.