Moderate overlap front: original test
Tested vehicle: 2001 Isuzu Trooper S 4-door 4wd
Rating applies to 2000-02 models
The Isuzu Trooper was redesigned for the 1992 model year and structurally modified beginning with 2000 models to improve occupant protection in frontal crashes.
The Insurance Institute for Highway Safety has evaluated the crashworthiness of the Trooper in three 40 mph moderate overlap frontal crash tests into deformable barriers. Three tests were conducted because major fuel leaks occurred in the first two tests. Isuzu identified defects in the design and recalled the affected models. A third test was conducted to assess the effect of the design fixes.
| Evaluation criteria | Rating |
|---|---|
| Overall evaluation | |
| Structure and safety cage | |
| Driver injury measures | |
| Head/neck | |
| Chest | |
| Leg/foot, left | |
| Leg/foot, right | |
| Driver restraints and dummy kinematics Dummy movement wasn't well controlled during any of the three offset tests. There was far too much upward movement of the steering wheel, which contributed to the dummy's head bottoming out the airbag and hitting the steering wheel in each of the tests. During rebound in the first test, the dummy's head hit the upper B-pillar near the roof side rail. In the second test, the dummy rebounded into the seat without its head coming close to any stiff structure that could cause additional injury. In the third test, the dummy's head grazed the B-pillar on rebound. |
|
Technical measurements for this test
Measures of occupant compartment intrusion on driver side
| Evaluation criteria | Measurement | ||
|---|---|---|---|
| Test ID | CF00021 | CF00024 | CF00029 |
| Footwell intrusion | |||
| Footrest (cm) | 17 | 20 | 21 |
| Left (cm) | 19 | 21 | 21 |
| Center (cm) | 19 | 21 | 23 |
| Right (cm) | 21 | 21 | 23 |
| Brake pedal (cm) | 20 | 19 | 20 |
| Instrument panel rearward movement | |||
| Left (cm) | 3 | 3 | 2 |
| Right (cm) | 3 | 4 | 1 |
| Steering column movement | |||
| Upward (cm) | 21 | 20 | 21 |
| Rearward (cm) | -3 | -3 | -2 |
| A-pillar rearward movement (cm) | 1 | 1 | 2 |
Driver injury measures
| Evaluation criteria | Measurement | ||
|---|---|---|---|
| Test ID | CF00021 | CF00024 | CF00029 |
| Head | |||
| HIC-15 | 411 | 434 | 390 |
| Peak gs at hard contact | 76 | 75 | 74 |
| Neck | |||
| Tension (kN) | 2.5 | 2.0 | 2.1 |
| Extension bending moment (Nm) | 33 | 35 | 24 |
| Maximum Nij | 0.60 | 0.54 | 0.44 |
| Chest maximum compression (mm) | 33 | 33 | 34 |
| Legs | |||
| Femur force - left (kN) | 5.4 | 4.8 | 5.3 |
| Femur force - right (kN) | 3.3 | 4.0 | 3.4 |
| Knee displacement - left (mm) | 8 | 7 | 8 |
| Knee displacement - right (mm) | 10 | 8 | 6 |
| Maximum tibia index - left | 1.11 | 0.98 | 1.08 |
| Maximum tibia index - right | 1.23 | 1.54 | 1.07 |
| Tibia axial force - left (kN) | 10.9 | 11.5 | 10.9 |
| Tibia axial force - right (kN) | 3.2 | 6.5 | 6.6 |
| Foot acceleration (g) | |||
| Left | 287 | 330 | 300 |
| Right | 471 | 372 | 345 |