• Rollover Resistance

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Rollover Test

Rollover Test movie image
Rollover test refers to the test that measures the risk of rollover when vehicles conduct high-speed sudden turn and road departure. Expects the reduction in rollover accidents by providing information on possibility of rollover to the consumer and bring about recognition on risk of rollover during the high-speed sudden turn and road departure.

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Static Stability Factor Measurement test

1. Test Method
Vehicle Loading Condtion, Etc ㆍThe vehicle manufacturer's recommended cold tyre inflation pressure
ㆍInstall Dummy to the Driver Seat in Complete Vehicle Kerb Weight
track width & wheelbase Measurement ㆍTrack width : Measure Front Wheel (4 runs) & Rear Wheel (4 runs) and Calculate Average track width
ㆍwheelbase : Measure Left/Right wheelbase 2 runs
2.Test Item : Static Stability Factor (SSF)
  • Calculate SSF by measuring height of the center of gravity, etc by tilting the vehicle toward front and rear 2 times respectively
  • Static Stability Factor (SSF) = T/2H
  • T : track width(mm) / H: height of the center of gravity (mm)
View of SSF Measurement Test image

Dynamic maneuvering rollover test

1. Test Method
Vehicle Loading Condtion, Etc ㆍThe vehicle manufacturer's recommended cold tyre inflation pressure
ㆍGVWR(Gross Vehicle Weight Rating)-(3 water dummy)
Test Speed ㆍ55, 65, 70, 75, 80km/h
Steering Wheel Rate ㆍ720deg/s
Steering Wheel Angle Input ㆍGeneration of Lateral Acceleration 3.0m/s² Steering Wheel Angle(δ3.0㎨)× 6.5 and 5.5
2. Test Item : Lifting of Wheel
  • When the cornering inner wheel is lifted over 50mm from the road surface at once, it is considered as "tip-up".

    Track & Behavior of Vehicle for Dynamic maneuvering rollover test image
    Contiguration of Dynamic maneuvering rollover test Equipment

Indication of rollover resistance rating

  • Rollover resistance ratings are divided into 5 levels and highest level and lowest level is indicated with 5 stars and 1 star respectively.
Indication of rollover resistance rating image
Rollover Resistance Rating Risk of Rollover
★★★★★ Less than 10%
★★★★ Between 10% and 20%
★★★ Between 20% and 30%
★★ Between 30% and 40%
Greater than 40%