Am a below the knee amputee and needed a power chair for public trans. to Physical therapy and many doctors appts. On now three events the chair has put me in harms way. today while straped down on a city bus after a left turn the chair toppled over with me in it, causing a major event in which broke insulin bottles and stopage of the bus route. This chair is not for outdoor use and at my fitting it was made aware that this was it intended use.