An ATV safety roll bar system including a safety belt, a seat back, and a collapsible emergency shelter adapted to secure to the roll bar and ATV. The roll bar may prevent injury or death in cases of ATV rollover accidents or crashes by absorbing the brunt of the force from the rolling or falling ATV. The seat back may include a rope or strap laced between metal bars having a series of holes, the metal bars being integrated onto the roll bar. The safety belt may be attached to the roll bar at various points and may be configurable to meet the preference of the ATV operator. The system may include a seat belt retractor to secure the operator on the ATV. The system may include rollover stop bars that extend in response to near rollover conditions. The system may include a tilt sensor and alarm warning system.