Bicycle, In-Line Skating, Skateboarding Safety--Identifying High-Risk Situations Most crashes involving children on bicycles, in-line skates, or skateboards occur because the child breaks a traffic rule. Bicycle, In-Line Skating, Skateboarding Safety--Prevention Skateboards should never be used on surface streets. Your child should wear protective gear such as helmets, padding, and closed-toe and slip-resistant shoes. Buying a Bike for Your Child Most youngsters learn the basics of pedaling, steering and braking on a tricycle or "big wheel" cycle, and around age 4 are ready to try a two-wheeler with training wheels. Kids Need Safety Gear for In-line Skating Having your child wear the appropriate safety gear and use common sense when skating can help reduce the risk for injury.