Our dynamic Testing is repeatable, reliable, and produces results that could save your life.

Home / Testing

Dynamics of a JRS Rig

Dynamic of the JRS Rig


Dynamic rollover testing is our primary focus here at CfIR. We use the Jordan Rollover System (JRS) to evaluate a vehicle's potential for injury through ejection and roof crush as well as the effectiveness of side curtain airbags, fluid containment, and seat belts in rollovers. We also conduct quasi-static tests with our R216 device which allows us to determine a vehicle's strength to weight ratio (SWR) under various loading conditions. In addition to JRS and R216 tests we also conduct pendulum and spit tests which allow us predict occupant injury in a rollover.

Historical Testing Results

Volvo XC90

Honda CRV

Honda Ridgeline

Jeep Grand Cherokee

Chevrolet Tahoe


JRS Rollover Vehicle Compare

  Volvo XC90 (2005) Honda CRV (2007) Honda Ridgeline (2006) Jeep Grand Cherokee (2007) Chevrolet Tahoe (2007)
  Roll 1 Roll 2 Roll 1 Roll 2 Roll 1 Roll 2 Roll 1 Roll 2 Roll 1 Roll 2
Roof FMVSS 216 SWR 4.6 4.6 2.6 2.6 2.4 2.4 2.2 2.2 2.1 2.1
Road Speed (mph) 15 15 15 15 15 15 15 15 15 15
Pitch Angle at Impact (deg) 5° 10° 5° 10° 5° 10° 5° 10° 5° 10°
                     

A-Pillar

                   
Peak Dynamic Crush (in) 1.7 3.1 3.4 6.5 7.8 14.4 8.4 11.8 7.9 14.0
Cumulative Residual Crush (in) 0.5 1.9 1.8 3.6 5.0 10.9 6.5 9.1 5.8 10.9
Maximum Crush Speed (mph) 1.9 2.6 4.0 5.3 8.2 15.0 7.3 8.6 6.1 11.6
                     

B-Pillar

                   
Peak Dynamic Crush (in) 1.2 2.1 2.0 3.4 6.0 11.1 7.3 10.1 5.2 9.8
Cumulative Residual Crush (in) 0.2 0.7 0.8 1.4 3.4 7.4 5.6 7.8 3.5 6.9
Maximum Crush Speed (mph) 1.7 2.2 2.6 3.4 5.6 6.9 7.9 6.5 4.2 7.0
                     
Comprehensive Neck Load, Fz 2889 3628 5583 3687 10006 4685 9757 6781 6101 3318
Peak Upper, Flexion Moment (N m) 128 259 255 328 492 324 470 396 304 247
Upper Neck, Nij* 0.52 1.05 1.02 1.30 1.64 1.19 1.75 2.07 1.09 0.81
Lower Neck, Nij* 0.62 0.87 1.20 1.10 2.10 1.06 2.00 1.59 1.02 0.87
                     



  VW Jetta (2007) Toyota Camry (2007) Hyndai Sonata (2006) Chrysler 300 (2006) Pontiac G6 (2006)
  Roll 1 Roll 2 Roll 1 Roll 2 Roll 1 Roll 2 Roll 1 Roll 2 Roll 1 Roll 2
Roof FMVSS 216 SWR 5.1 5.1 4.3 4.3 3.2 3.2 2.5 2.5 2.3 2.3
Road Speed (mph) 15 15 15 15 15 15 15 15 15 15
Pitch Angle at Impact (deg) 5° 10° 5° 10° 5° 10° 5° 10° 5° 10°
                     

A-Pillar

                   
Peak Dynamic Crush (in) 2.7 6.3 3.4 7.2 4.7 6.9 8.4 10.4 7.1

10.0

Cumulative Residual Crush (in) 1.0 3.4 1.6 4.3 2.6 -- 5.6 7.4 4.9 7.0
Maximum Crush Speed (mph) 5.7 7.1 5.0 8.2 5.0 -- 7.5 10.6 7.5 13.1
                     

B-Pillar

                   
Peak Dynamic Crush (in) 1.5 2.4 1.8 4.2 -- 2.6 4.4 5.3 3.6 5.9
Cumulative Residual Crush (in) 0.6 1.3 0.7 2.1 -- 0.8 2.7 3.4 2.5 3.4
Maximum Crush Speed (mph) 3.8 3.5 3.2 5.0 -- 4.1 5.4 7.6 6.3 8.9
                     
Comprehensive Neck Load, Fz 5158 5394 4211 2669 4835 3457 5598 1979 2399 1916
Peak Upper, Flexion Moment (N m) 279 318 -- -- -- -- 414 155 198 155
Upper Neck, Nij* 0.96 1.08 0.78 0.76 1.63 1.15 1.80 0.40 0.66 0.54
Lower Neck, Nij* 1.17 1.28 -- -- -- -- 1.44 0.57 0.68 0.54