The NHTSA is urging all users of 15-passenger vans to take specific steps to ensure the safety of drivers and passengers. Overloading 15-passenger vans increases rollover risk and makes the vehicle more unstable in any handling maneuvers. Other safety tips include making sure all passengers are buckled up, vans have appropriately-sized and load rated tires that are properly inflated before every trip, the vehicle is regularly maintained, and drivers are properly licensed and experienced in operating a 15-passenger van.