A door barrier assembly for a vehicle can include a flexible barrier member such as a net, flexible plastic screen, or other barrier device located within an opening in the vehicle frame. The vehicle frame can include a front pillar member connected to a longitudinally extending roll cage member that extends in a longitudinal rearward direction of the vehicle from a top end of the front pillar member. The front pillar member can also be connected to a transverse roll cage member. The flexible barrier member can include an upper forward portion and a connector at the upper forward portion releasably attached to one of the transverse roll cage member and the longitudinally extending roll cage member at a location between the front pillar member and the longitudinally extending roll cage member.