It's terrible but true that kids all over the world are being run over and hurt and killed by dangerous drivers.
Some of the kids who survive have injuries that affect them for the rest of their lives. Some have to use a wheelchair because their legs have been so badly damaged. Some have head injuries and can't talk properly anymore because their brains have been damaged.
Danica was injured by a driver who was so dangerous that he drove on to the pavement, killing Danica's aunty Paula and running over Danica's legs. Danica's right leg was so badly hurt that the doctors at the hospital had to cut it off. Here's a picture of Danica.
Danica says: "I’ve had to grow up quickly. I’ve learnt a lot about the world and I want to share some of what I’ve learnt with you. Look out."
Drivers should hit the brake, not a child. They should drive slowly and carefully, never using mobile phones and never driving after drinking alcohol. They should always be watching out for kids who are walking and cycling.
But the sad fact is many drivers aren't slow, careful and safe. So you have to look out for yourself. Never trust traffic.
Here are our top ten tips to help you stay as safe as possible.
1. Hold hands with your mum or dad and make sure really young kids hold hands too.
2. Think hard about where you are going and how you are going to get there using pavements and crossing roads at the safest possible places, such as pelican crossings.
3. Always stop, look and listen before crossing a road. Never cross if you are not sure it is safe and don't follow the bad example of mates who muck about on roads. Play in the park, not near a road. You can also read our mascot Zak the Zebra's tips for families on using roads safely.
4. Always wear a cycle helmet and a high visibility vest when on your bike, and don't cycle on roads that have lots or fast traffic on them, or if you haven't been on a road cycling training course.
5. If you are in a car, you need a child seat if you are smaller than 150cm. Don't travel without one.
6. You can help your mum or dad drive safely. Tell them to drive at 20mph or slower in town and to slow down on country roads too. You can also get your family to sign the Brake's Pledge.
7. Ask your mum or dad if you can travel by train or bus rather than use the car. Trains and buses are safer and more fun, and cars are a big cause of pollution, destroying our environment.
8. Tell your teacher to get your school taking part in the Giant Walking Bus. It's a giant march by kids all over Britain telling drivers to slow down. The kids at the top of this page are taking part and you can too!.
9. Get your family involved in our campaign Slower speeds save lives campaign, which is calling on the government to put lower speed limits in towns.
10. If you have a little brother or sister who goes to a nursery or play group, tell your mum or dad about how they can take part in a Beep Beep Day.
Want to play some road safety computer games? Click here.