and unstoppable:

The sign a child in the car tells the special services that a child is in the car, and the drivers that a car of increased danger is driving in front of the car...So be alert and careful!
All signs warn that the car car carries a potential danger and it does not matter who is driving.

According to the Civil Code of the Russian Federation, a moving car is in any case a means of increased danger. There are mandatory identification signs that must be installed on the car, their absence is punishable by a fine, there are simply informative, optional, the sign "child in the car" does not apply to those or others and does not carry any useful information for special services.
Found in the runet the most sensible explanations, why still stick the sign "child in the car":
- because the sticker is applied for free to many child seats, and "everyone does"
Because a child is in the car and he is driving, even if he is 35 years old.
- because in the case of a violation, you can blame the suddenly distracted child;
- because it is necessary to give an occasion to the DPS employee to check whether the child is attached and whether there is a child holding device in the car;
- because you want to inform fellow tribes - the owner has successful functioning reproductive organs, well, or remind about the benefits of contraceptives;
- because in this car you can crush a child's chair, and also sandwiches, shoulder, rabbit - how lucky, etc.