Transportation by a parent’s vehicle is a highly convenient mode of transport for children with orthopaedic disabilities. We researched the safety of children with orthopaedic disabilities when embarking and disembarking vehicles to clarify the issues of children riding in their parents' cars. The vehicle riding modes for children with orthopaedic disabilities were "sitting in a seat," "lying down in a seat," and "riding together with a wheelchair." Many children sitting in a seat were secured with the car’s original shoulder belts, child car seats or car seats for children with special needs. However, big or tall children were unable to use car seats for children and instead used the car’s original shoulder belts. Some of them had accidents in which, for example, their seating posture shifted, the shoulder belt dug into their necks and their bodies impacted the vehicle’s interior components. Therefore, it is necessary to develop car seats for children with special needs for a wider range of children. Many children lying down in seats were not properly secured and through vehicle shaking became wedged in narrow spaces or fell under the seat. It is necessary to examine methods to prevent slipping or shifting of children lying down in seats. Many children riding together with a wheelchair were secured using the belts of the wheelchair. Children were not secured at all in about 10 percent of cases. Depending on the wheelchair seatbelt shape, thickness or fastening method, it might not be possible to prevent the impact of accidents (Kamata and Sono, 2001). Many individuals who rode together with wheelchairs required additional outside clearance and assistance to embark or disembark the vehicle. Because it is not possible to first remove the child from the vehicle and ask the child to wait while removing the wheelchair from the vehicle, it is important to provide parking spaces reserved for people with disabilities to enable smooth vehicle embarkation and disembarkation. Currently, healthy people inappropriately use parking spaces reserved for people with disabilities. Therefore, it is necessary to promote the development of additional parking spaces and to prevent inappropriate use. Moreover, it is necessary to promote the development of parking spaces that have not only additional width but also additional depth to ensure safety of children who embark or disembark from the rear of the vehicle using a lift.