Loading Type

Unit

Level

Injury Level

Equivalent AIS

Legislative Limits

Ref

Compressive

N

4000

Major injury

3

4000 Proposed FMVSS208

-

Tensile

N

<1200

No Injury Level

0

1100 Lowest Level 76/79/EC

Mertz

1200 - 3300

Minor Injury

2

-

-

>3300

Major Injury

3 - 6

3300 Highest Level 76/79/EC

3300 Proposed FMVSS208

NHSTA

Shear

N

<1100

No Injury

-

1100 Lowest Limit 76/79/EC

-

>3100

Minor Injury

2

3100 Highest Limit 76/79/EC

3100 Proposed FMVSS208

NHTSA

Flexion

Nm

61 - 190

Minor Ligament / Muscle damage

1

-

-

190 - 203

Significant Neck Injury

2 - 5

190 Nm Proposed FMVSS208

-

>203

Major Neck injury

6

-

-

Extension

Nm

<47

No Injury

0

-

-

47 - 57

Minor Ligament / Muscle damage

1

57 Nm Proposed FMVSS208

57 Nm 96/79/EC

-

>57

Major Neck Injury

3 - 6

-

-