Types of Rollovers
Rollovers occur in one of two ways: tripped or un-tripped.

Tripped Rollovers

NHTSA data show that 95% of single-vehicle rollovers are tripped. This happens when a vehicle leaves the roadway and slides sideways, digging its tires into soft soil or striking an object such as a curb or guardrail. The high tripping force applied to the tires in these situations can cause the vehicle to roll over.

One of the best ways to avoid a rollover, therefore, is to stay on the road. Electronic Stability Control is a promising new technology that will help drivers stay on the road in emergency situations.

• Curbs, soft soil/shoulders, guardrails, pavement surface discontinuities, snow banks, or other objects can cause tripping.

• Tripping can also occur when a vehicle is traveling forward, typically at a high speed. If one side of the vehicle rides up on an object, like a guardrail, it may be forced to roll over.

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• Tripping can also occur on severe slopes in off-road situations. If an incline’s slope is too steep to keep the vehicle upright, it can topple over.

Un-Tripped Rollovers

Un-tripped rollovers are less common than tripped rollovers, occurring less than 5% of the time, and mostly to top-heavy vehicles. Instead of an object serving as a tripping mechanism, un-tripped rollovers usually occur during high-speed collision avoidance maneuvers.

• Un-tripped rollovers do not occur on slippery roads. They are the result of normal surface friction.

• Cover Page
• Rollover Rating System
• Types of Rollovers
• Causes of Rollovers
• Rollover Airbags
• Rollovers - FAQ
• Electronic Stability Control (ESC)
• Variable Ride-Height
  Suspension (VRHS)
• NHTSA's SUV Rating System
• UCR Class Schedule
• A New Way of Protecting Human Life
• Accident Causing Distractions (Infants)
• ARC Network New Members
• September Training Events
• In The News
• Membership Information

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