Riders must be 54 inches tall to ride without supervision , new rules mandate . Having two riders in each car is `` strongly recommended , '' official 's letter states . Comment: How the girl fell has not been determined ; officials have no eyewitnesses .
Riders must be 54 inches tall to ride without supervision , new rules mandate . Having two riders in each car is `` strongly recommended , '' official 's letter states . Abiah Jones , 11 , fell to her death at a Wildwood amusement park on June 3 . How the girl fell has not been determined ; officials have no eyewitnesses .