dts-2026Presentation/test_modes_slides.md

# Safety Test Modes Reference
## One Slide Per Test Mode
### Comprehensive Guide to Automotive and Sports Safety Testing

**Prepared for:** DTS (Diversified Technical Systems)  
**Purpose:** Technical reference for safety testing instrumentation  
**Total Slides:** 32 (27 test modes + 5 section dividers)

---

# SECTION 1: NHTSA / FMVSS REGULATORY TESTS

## Tests in This Section:
1. FMVSS 208 - Full Frontal Impact
2. FMVSS 214 - Side Impact (MDB)
3. FMVSS 214 - Side Pole Impact
4. FMVSS 216 - Roof Crush Resistance
5. FMVSS 301 - Fuel System Integrity
6. FMVSS 208 - Out-of-Position (OOP) Testing
7. FMVSS 213 - Child Restraint Systems
8. FMVSS 201 - Interior Impact (Free Motion Headform)

**These are mandatory compliance tests required for vehicles sold in the United States.**

---

## FMVSS 208 - Full Frontal Impact
**NHTSA** | Introduced: 1968 (crash test 1984) | Full Vehicle Crash Test

### Purpose
Evaluates occupant protection in head-on collisions. The most fundamental crash test - simulates a vehicle striking a fixed barrier (like a concrete wall) at highway speed. Forms the basis of the NCAP 5-star rating system.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Speed | 35 mph (56 km/h) |
| Barrier | Rigid concrete wall |
| Overlap | 100% full width |
| Vehicle | Production vehicle |
| Orientation | Perpendicular to barrier |

### Dummy & Instrumentation
| Item | Specification |
|------|---------------|
| Driver ATD | Hybrid III 50th percentile male |
| Passenger ATD | Hybrid III 5th percentile female |
| Total Channels | ~94 (47 per dummy) |
| Key Sensors | Head triaxial accel, chest accel, chest deflection, femur load cells, neck load cells |

### Injury Criteria & Limits
| Metric | Limit | Body Region | CFC |
|--------|-------|-------------|-----|
| HIC₁₅ | ≤ 700 | Head | 1000 |
| HIC₃₆ | ≤ 1000 | Head | 1000 |
| Peak Head Accel (3ms) | ≤ 80g | Head | 1000 |
| Chest Accel (3ms) | ≤ 60g | Thorax | 180 |
| Chest Deflection | ≤ 63 mm (50th) / 52 mm (5th) | Thorax | 600 |
| Femur Load | ≤ 10 kN | Lower Extremity | 600 |
| Nij (all modes) | ≤ 1.0 | Neck | 600 |
| Neck Tension | ≤ 4,170 N (50th) | Neck | 600 |
| Neck Compression | ≤ 4,000 N | Neck | 600 |

**Image:** `assets/crash_test_dummies_subaru.jpg`

---

## FMVSS 214 - Side Impact (Moving Deformable Barrier)
**NHTSA** | Introduced: 1990 (dynamic) | Full Vehicle Crash Test

### Purpose
Evaluates occupant protection when struck broadside by another vehicle. Side impacts are particularly dangerous because there is minimal crush space between the door and the occupant - only inches separate life and death.

### Test Setup
| Parameter | Value |
|-----------|-------|
| MDB Speed | 33.5 mph (54 km/h) |
| MDB Mass | 3,015 lb (1,368 kg) |
| MDB Angle | 27° crabbed (not perpendicular) |
| Impact Point | Driver side, centered on H-point |
| Target Vehicle | Stationary |
| Barrier Face | Deformable aluminum honeycomb |

### Dummy & Instrumentation
| Item | Specification |
|------|---------------|
| Driver ATD | ES-2re (Euro SID - rib extension) |
| Rear ATD | SID-IIs (5th percentile female) |
| Total Channels | ~80 |
| Key Sensors | Head accel, rib deflections (3 levels), pelvis accel, abdominal force |

### Injury Criteria & Limits
| Metric | Limit | Body Region | CFC |
|--------|-------|-------------|-----|
| HIC₃₆ | ≤ 1000 | Head | 1000 |
| Lower Spine Accel | ≤ 82g (ES-2re) | Pelvis | 1000 |
| Rib Deflection | ≤ 44 mm (any rib) | Thorax | 600 |
| Abdominal Force | ≤ 2.5 kN | Abdomen | 600 |
| Pubic Force | ≤ 6 kN | Pelvis | 600 |
| V*C (Viscous) | ≤ 1.0 m/s | Thorax | - |

**Image:** `assets/iihs_side_barrier.jpg`

---

## FMVSS 214 - Side Pole Impact
**NHTSA** | Introduced: 2007 | Full Vehicle Crash Test

### Purpose
Simulates a vehicle sliding sideways into a narrow fixed object like a tree or utility pole. These crashes concentrate force on a small area, causing severe intrusion. Added after recognizing that MDB tests alone didn't capture this failure mode.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Speed | 20 mph (32 km/h) |
| Pole Diameter | 254 mm (10 inches) |
| Impact Angle | 75° (oblique, not perpendicular) |
| Impact Location | Driver's head position |
| Vehicle Movement | Vehicle propelled into stationary pole |

### Dummy & Instrumentation
| Item | Specification |
|------|---------------|
| Driver ATD | ES-2re or WorldSID |
| Total Channels | ~40 |
| Key Sensors | Head accel, thorax ribs, pelvis accel |

### Injury Criteria & Limits
| Metric | Limit | Body Region | CFC |
|--------|-------|-------------|-----|
| HIC₃₆ | ≤ 1000 | Head | 1000 |
| Rib Deflection | ≤ 44 mm | Thorax | 600 |
| Lower Spine Accel | ≤ 82g | Pelvis | 1000 |
| Abdominal Force | ≤ 2.5 kN | Abdomen | 600 |

**Note:** Side curtain airbags became critical for passing this test.

**Image:** `assets/iihs_side_2021.jpg`

---

## FMVSS 216 - Roof Crush Resistance
**NHTSA** | Introduced: 1973 (1.5×), Upgraded 2009 (3×) | Static Test

### Purpose
Ensures the roof structure can support the vehicle's weight during a rollover, preventing catastrophic collapse onto occupants' heads. The 2009 upgrade doubled the strength requirement after research showed the original standard was inadequate.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Test Type | Static (no crash) |
| Force Application | Angled steel plate |
| Plate Angle | 25° from horizontal |
| Force Required | ≥ 3× vehicle unloaded weight |
| Test Duration | Force maintained for 5 seconds |
| Tested Area | Both driver and passenger sides |

### Instrumentation
| Item | Specification |
|------|---------------|
| ATD | None (static test) |
| Measurements | Applied force, roof displacement |
| Channels | ~4-6 |
| Key Sensors | Load cells under plate, displacement transducers |

### Performance Criteria
| Metric | Requirement |
|--------|-------------|
| Strength-to-Weight Ratio | ≥ 3.0 |
| Maximum Displacement | ≤ 127 mm (5 inches) before reaching 3× |
| Both Sides | Must pass independently |

**Historical Note:** The original 1.5× standard was criticized as too weak. After the Ford Explorer/Firestone rollover crisis, the 2009 upgrade to 3× was implemented.

**Image:** `assets/roof_strength_test.jpg`

---

## FMVSS 301 - Fuel System Integrity
**NHTSA** | Introduced: 1968, Revised 1977 (post-Pinto) | Full Vehicle Crash Test

### Purpose
Prevents fuel leakage after crashes to reduce fire risk. The infamous Ford Pinto case (fuel tank rupturing in rear impacts) led to strengthened requirements in 1977.

### Test Setup - Rear Impact
| Parameter | Value |
|-----------|-------|
| Speed | 50 mph (80 km/h) - rear moving barrier |
| Barrier Mass | 4,000 lb (1,814 kg) |
| Configuration | MDB strikes rear of stationary vehicle |

### Test Setup - Side Impact
| Parameter | Value |
|-----------|-------|
| Speed | 20 mph (32 km/h) |
| Configuration | MDB strikes side |

### Test Setup - Rollover
| Parameter | Value |
|-----------|-------|
| Procedure | Vehicle rotated 360° |
| Duration | Hold at 90°, 180°, 270° positions |

### Instrumentation
| Item | Specification |
|------|---------------|
| ATD | None (fuel leakage test) |
| Measurements | Fuel leakage volume |
| Duration | 5 minutes post-crash for static leak |

### Performance Criteria
| Metric | Limit |
|--------|-------|
| Fuel Leakage (impact) | ≤ 28g during impact |
| Fuel Leakage (static) | ≤ 142g/min post-crash |
| Rollover Leakage | ≤ 142g/min at each position |

**Historical Note:** "It's cheaper to let them burn" memo from Ford became infamous. Estimated $11 fix vs. $200M in settlements.

**Image:** `assets/cadaver_crash_test.jpg` (for general crash imagery)

---

## FMVSS 208 - Out-of-Position (OOP) Testing
**NHTSA** | Introduced: 2000 (Advanced Airbag Rule) | Static Deployment Test

### Purpose
Ensures airbags don't injure or kill occupants who are too close to the airbag at deployment. After 175+ deaths from early aggressive airbags (mostly children and small adults), this test was added.

### Test Configurations
| Position | Description |
|----------|-------------|
| Position 1 | Chin on airbag module (close proximity) |
| Position 2 | Chest on airbag module |
| Position 3 | Abdomen on airbag module |
| Position 4 | Child seat in front passenger position |

### Dummy & Instrumentation
| Item | Specification |
|------|---------------|
| ATDs Used | Hybrid III 5th female, 6-year-old, 3-year-old, 12-month CRABI |
| Total Channels | ~30 per test |
| Key Sensors | Head/neck loads, chest deflection |

### Injury Criteria & Limits (5th Female)
| Metric | Limit | Body Region |
|--------|-------|-------------|
| HIC₁₅ | ≤ 700 | Head |
| Nij | ≤ 1.0 | Neck |
| Neck Tension | ≤ 2,620 N | Neck |
| Chest Deflection | ≤ 52 mm | Thorax |

### Key Requirements
- Suppression: Airbag must suppress for rear-facing child seats
- Depowering: Lower inflation force than pre-1998 airbags
- Multi-stage: Variable deployment force based on crash severity

**Image:** `assets/crabi_infant_dummy.jpg`

---

## FMVSS 213 - Child Restraint Systems
**NHTSA** | Introduced: 1971, Revised Multiple Times | Sled Test

### Purpose
Ensures child car seats protect children in crashes. Tests the child restraint system itself, not the vehicle.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Test Type | Sled test (simulated crash) |
| Delta-V | 30 mph (48 km/h) |
| Peak G | 23-26g |
| Pulse Duration | ~80 ms |
| Seat Bench | Standardized test bench |

### Dummy Types by Size
| Dummy | Represents | Weight |
|-------|------------|--------|
| CRABI 12-month | 12-month infant | 22 lb (10 kg) |
| Hybrid III 3-year-old | Toddler | 33 lb (15 kg) |
| Hybrid III 6-year-old | Child | 51 lb (23 kg) |
| Hybrid III 10-year-old | Older child | 79 lb (36 kg) |

### Instrumentation
| Item | Specification |
|------|---------------|
| Total Channels | ~15-20 per dummy |
| Key Sensors | Head accel, chest accel, head excursion |

### Injury Criteria & Limits
| Metric | Limit | Notes |
|--------|-------|-------|
| HIC₃₆ | ≤ 1000 | All dummies |
| Head Excursion | ≤ 720 mm | Distance traveled forward |
| Knee Excursion | ≤ 915 mm | Distance traveled forward |
| Chest Accel (3ms) | ≤ 60g | All dummies |

**Image:** `assets/child_dummy_booster.jpg`

---

## FMVSS 201 - Interior Impact (Free Motion Headform)
**NHTSA** | Introduced: 1968, Upgraded 1998 (Upper Interior) | Component Test

### Purpose
Ensures interior surfaces (A-pillar, B-pillar, roof rail, header) don't cause severe head injury when occupants strike them during crashes. Led to padded pillars and roof-mounted airbags.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Test Type | Component (not full vehicle crash) |
| Impactor | Free Motion Headform (FMH) |
| FMH Mass | 4.5 kg (10 lb) |
| Impact Speed | 15 mph (24 km/h) |
| Target Areas | A-pillar, B-pillar, C-pillar (if present), roof rail, header |

### Instrumentation
| Item | Specification |
|------|---------------|
| FMH Sensors | Triaxial accelerometer |
| Total Channels | 3 (x, y, z acceleration) |
| Sample Rate | ≥ 8,000 Hz |
| Filter | CFC 1000 |

### Injury Criteria
| Metric | Limit | Location |
|--------|-------|----------|
| HIC(d) | ≤ 1000 | All target points |

**Note:** HIC(d) is a modified HIC calculation for the FMH test.

### Test Point Grid
- Multiple impact points mapped across each pillar/header
- Each point tested separately
- All points must pass

**Image:** `assets/iihs_dummy_sensors.jpg`

---

# SECTION 2: IIHS CONSUMER INFORMATION TESTS

## Tests in This Section:
1. IIHS Moderate Overlap Frontal
2. IIHS Small Overlap Frontal (Driver + Passenger)
3. IIHS Side Impact (2021 Updated)
4. IIHS Roof Strength
5. IIHS Head Restraint / Whiplash (Discontinued 2020)
6. IIHS Front Crash Prevention - Vehicle to Vehicle
7. IIHS Headlights
8. IIHS Front Crash Prevention - Pedestrian

**IIHS tests are voluntary consumer information ratings (Good/Acceptable/Marginal/Poor), not regulatory requirements.**

---

## IIHS Moderate Overlap Frontal
**IIHS** | Introduced: 1995 | Full Vehicle Crash Test

### Purpose
Simulates a head-on crash where only part of each vehicle's front structure is engaged - the most common type of serious frontal crash. More demanding than the FMVSS 208 full-frontal test because it bypasses part of the crush structure.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Speed | 40 mph (64 km/h) |
| Overlap | 40% of vehicle width |
| Barrier | Deformable aluminum honeycomb |
| Barrier Height | 650 mm |
| Barrier Width | 1,000 mm |
| Barrier Depth | Progressive crush stiffness |

### Dummy & Instrumentation
| Item | Specification |
|------|---------------|
| Driver ATD | Hybrid III 50th percentile male |
| Total Channels | ~47 |
| Key Sensors | Head accel, neck loads, chest accel/deflection, femur loads, tibia loads |

### Injury Criteria Assessment
| Body Region | Good | Acceptable | Marginal | Poor |
|-------------|------|------------|----------|------|
| Head/Neck | Low risk | Elevated risk | High risk | Very high risk |
| Chest | Low risk | Elevated risk | High risk | Very high risk |
| Hip/Thigh | Low risk | Elevated risk | High risk | Very high risk |
| Lower Leg/Foot | Low risk | Elevated risk | High risk | Very high risk |

### Structural Assessment
- Intrusion measurements at multiple points
- Steering column displacement
- Door opening post-crash
- Fuel system integrity

**Image:** `assets/iihs_frontal_crash_test.jpg`

---

## IIHS Small Overlap Frontal
**IIHS** | Introduced: 2012 (Driver), 2017 (Passenger) | Full Vehicle Crash Test

### Purpose
Addresses crashes where only the corner of the vehicle hits an object (tree, pole, corner of another vehicle). Many vehicles that aced moderate overlap tests failed this test initially, including premium brands like BMW, Mercedes, and Audi.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Speed | 40 mph (64 km/h) |
| Overlap | 25% of vehicle width |
| Barrier | RIGID (not deformable) |
| Barrier Edge | Rounded |
| Tests | Driver side AND Passenger side (separate tests) |

### Dummy & Instrumentation
| Item | Specification |
|------|---------------|
| ATD | Hybrid III 50th percentile male |
| Total Channels | ~47 |
| Key Sensors | Head, neck, chest, femur, tibia, foot |

### Key Evaluation Areas
| Assessment | What It Measures |
|------------|------------------|
| Structure | Intrusion into occupant compartment |
| Dummy Kinematics | Did occupant stay in protective zone? |
| Injury Measures | Risk to head/neck, chest, hip/thigh, leg/foot |
| Restraints | Did airbags deploy correctly? |

### Historical Impact
- 2012 launch: Only 3 of 13 midsize cars earned "Good"
- BMW 5-series, Mercedes C-Class, Audi A4 all rated "Marginal" or "Poor"
- Led to fundamental structural redesigns across the industry

**Image:** `assets/small_overlap_test.jpg` or `assets/iihs_small_overlap_overhead.jpg`

---

## IIHS Side Impact (Updated 2021)
**IIHS** | Introduced: 2003, Updated 2021 | Full Vehicle Crash Test

### Purpose
Simulates a T-bone crash with a larger, heavier striking vehicle (typical modern SUV). The 2021 update increased barrier weight and speed to reflect real-world vehicle size increases.

### Test Setup (2021 Protocol)
| Parameter | Original (2003) | Updated (2021) |
|-----------|-----------------|----------------|
| Barrier Speed | 31 mph (50 km/h) | 37 mph (60 km/h) |
| Barrier Mass | 3,300 lb (1,500 kg) | 4,200 lb (1,905 kg) |
| Ground Clearance | 300 mm | Higher (SUV-like) |
| Face Height | Standard | Taller |
| Impact Location | Driver side | Driver side |

### Dummy & Instrumentation
| Item | Specification |
|------|---------------|
| Front ATD | SID-IIs (5th percentile female) |
| Rear ATD | SID-IIs (5th percentile female) |
| Total Channels | ~60 |
| Key Sensors | Head accel, torso ribs, pelvis loads |

### Injury Assessment Areas
| Body Region | Sensors |
|-------------|---------|
| Head/Neck | Acceleration, HIC |
| Torso | Rib deflection (3 levels) |
| Pelvis | Acceleration, pubic force |

### Rating Criteria
- Driver and rear passenger injuries combined
- Structural intrusion measurements
- Head protection (did head contact hard surfaces?)

**Image:** `assets/iihs_side_2021.jpg`

---

## IIHS Roof Strength
**IIHS** | Introduced: 2009 | Static Test

### Purpose
Evaluates roof strength for rollover protection. IIHS standards exceed federal requirements - "Good" requires 4× vehicle weight (vs. FMVSS 216's 3×).

### Test Setup
| Parameter | Value |
|-----------|-------|
| Test Type | Static (quasi-static loading) |
| Plate Angle | 25° (same as FMVSS 216) |
| Loading Rate | No faster than 5 mm/second |
| Crush Limit | 127 mm (5 inches) |

### Rating Thresholds
| Rating | Strength-to-Weight Ratio |
|--------|-------------------------|
| Good | ≥ 4.0 |
| Acceptable | 3.25 - 3.99 |
| Marginal | 2.50 - 3.24 |
| Poor | < 2.50 |

### Note on Testing
- Both driver and passenger sides tested
- Weaker side determines overall rating
- Some vehicles exceed 6× or 7× vehicle weight

**Discontinued:** IIHS stopped rating roof strength after 2016 because nearly all vehicles earn Good.

**Image:** `assets/roof_strength_test.jpg`

---

## IIHS Head Restraint / Whiplash
**IIHS** | Introduced: 2004 (dynamic) | Sled Test | **DISCONTINUED 2020**

### Purpose
Evaluated protection against whiplash in rear-end crashes. Whiplash causes more injury claims than any other crash type, though injuries are typically less severe.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Test Type | Sled test (seat mounted on sled) |
| Delta-V | 10 mph (16 km/h) |
| Peak Acceleration | ~10g |
| Pulse Shape | Simulates rear-end crash |

### Dummy
| Item | Specification |
|------|---------------|
| ATD | BioRID II (Biofidelic Rear Impact Dummy) |
| Special Features | 24-vertebrae articulated spine |
| Total Channels | ~35 |
| Key Sensors | Head accel, neck forces/moments, spine motion |

### Evaluation Criteria
| Metric | What It Measured |
|--------|------------------|
| Time to Head Restraint Contact | How quickly head reached restraint |
| Torso Acceleration | Peak torso acceleration |
| Neck Shear | Maximum neck shear force |
| Neck Tension | Maximum neck tension |

### Why Discontinued
- Nearly all seats now earn "Good"
- IIHS developing more demanding rear-impact test

**Image:** `assets/hybrid_iii_family.jpg` (for dummy reference)

---

## IIHS Front Crash Prevention - Vehicle to Vehicle
**IIHS** | Introduced: 2013 | Track Test

### Purpose
Evaluates automatic emergency braking (AEB) and forward collision warning (FCW) systems. These systems detect imminent collisions and warn the driver or apply brakes automatically.

### Test Scenarios (Current Protocol)
| Target | Configuration |
|--------|---------------|
| Passenger Vehicle | Stationary target, centered and offset |
| Motorcycle | Stationary target, centered and offset |
| Semi-trailer | Stationary dry van (FCW only) |

### Test Speeds
| Speed | Test Type |
|-------|-----------|
| 31 mph (50 km/h) | Low speed |
| 37 mph (60 km/h) | Medium speed |
| 43 mph (69 km/h) | High speed |

### Instrumentation
| Item | Measurement |
|------|-------------|
| GPS | Precise vehicle position |
| Speed | Instantaneous velocity |
| Deceleration | Braking force applied |
| FCW Timing | Time before projected collision |

### Rating Criteria
| Component | Weight |
|-----------|--------|
| Speed Reduction (AEB) | 2/3 of score |
| Warning Timing (FCW) | 1/3 of score |
| Requirement | Warning ≥ 2.1 seconds before impact |

### Targets Used
- GST (Global Vehicle Target) - passenger car surrogate
- PTM (Powered Two-wheeler Target) - motorcycle surrogate
- Actual dry van trailer - semi-truck scenario

**Image:** `assets/iihs_fcp_car_target.png`

---

## IIHS Headlights
**IIHS** | Introduced: 2016 | Track Evaluation

### Purpose
Evaluates headlight illumination distance and glare. Good headlights provide crucial reaction time for avoiding obstacles at night. Testing revealed huge variation between vehicles - some "luxury" vehicles had poor headlights.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Test Track | Straight and curved sections |
| Curves | 500-foot and 800-foot radius |
| Measurements | Light intensity at road surface |
| Conditions | Nighttime, dry pavement |

### Evaluation Criteria
| Metric | Description |
|--------|-------------|
| Illumination Distance | How far light reaches (straight) |
| Curve Performance | Illumination on curves |
| High Beam Assist | Automatic switching |
| Glare | Light directed at oncoming drivers |

### Rating Factors
| Factor | Impact |
|--------|--------|
| Low Beam - Straight | Primary factor |
| Low Beam - Curves | Critical for safety |
| High Beam | Additional credit |
| Excessive Glare | Deductions |

### Key Findings
- Wide variation even within same model (trim levels)
- Halogen vs. LED vs. HID differences
- Curve-adaptive headlights significantly better

**Image:** `assets/iihs_crash_hall.jpg` (IIHS facility)

---

## IIHS Front Crash Prevention - Pedestrian
**IIHS** | Introduced: 2019 | Track Test

### Purpose
Evaluates whether AEB systems can detect and brake for pedestrians. Pedestrian fatalities have increased as SUV sales grew - detecting pedestrians is harder than detecting vehicles.

### Test Scenarios
| Scenario | Description |
|----------|-------------|
| Adult - Perpendicular | Adult dummy crossing road |
| Adult - Parallel | Adult walking along road edge |
| Child - Perpendicular | Child dummy darting into road |

### Test Speeds
| Speed | Scenario |
|-------|----------|
| 25 mph (40 km/h) | Adult perpendicular |
| 37 mph (60 km/h) | Adult perpendicular |
| 25 mph (40 km/h) | Child perpendicular |

### Targets
| Target | Description |
|--------|-------------|
| Adult Dummy | 50th percentile male body form |
| Child Dummy | 6-year-old size body form |
| Movement | Propelled across or along roadway |

### Rating Criteria
| Rating | Requirements |
|--------|--------------|
| Superior | Avoid or substantially reduce impact in all scenarios |
| Advanced | Significant speed reduction |
| Basic | Warning only, limited braking |

### Test Conditions
- Daytime testing (night testing added 2024 by Euro NCAP)
- Clear weather
- Defined target paths

**Image:** `assets/euroncap_headform.png` (pedestrian protection concept)

---

# SECTION 3: NCAP CONSUMER RATING TESTS

## Tests in This Section:
1. NHTSA NCAP 5-Star Frontal
2. NHTSA NCAP 5-Star Side
3. Euro NCAP MPDB (Mobile Progressive Deformable Barrier)

**NCAP programs provide star ratings for consumer comparison. They use similar tests to regulatory requirements but publish comparative results.**

---

## NHTSA NCAP 5-Star Frontal
**NHTSA** | Introduced: 1979 | Full Vehicle Crash Test

### Purpose
Provides consumers with comparative frontal crash safety ratings. Same test as FMVSS 208 but results published as 1-5 star ratings based on injury probability.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Speed | 35 mph (56 km/h) |
| Barrier | Rigid wall |
| Overlap | 100% full frontal |
| Configuration | Same as FMVSS 208 |

### Dummy & Instrumentation
| Item | Specification |
|------|---------------|
| Driver ATD | Hybrid III 50th male |
| Passenger ATD | Hybrid III 5th female |
| Total Channels | ~94 |

### Star Rating System
| Stars | Combined Injury Probability |
|-------|---------------------------|
| 5 stars | ≤ 10% |
| 4 stars | 11% - 20% |
| 3 stars | 21% - 35% |
| 2 stars | 36% - 45% |
| 1 star | ≥ 46% |

### Injury Probability Calculations
Based on:
- HIC₁₅
- Chest acceleration
- Chest deflection
- Femur loads

**Note:** Driver and passenger rated separately, then combined.

**Image:** `assets/crash_test_dummies_subaru.jpg`

---

## NHTSA NCAP 5-Star Side
**NHTSA** | Introduced: 1997 (MDB), 2011 (Pole added) | Full Vehicle Crash Test

### Purpose
Provides consumers with comparative side crash safety ratings. Combines MDB and pole tests for overall side rating.

### Test Setup - MDB
| Parameter | Value |
|-----------|-------|
| Speed | 38.5 mph (62 km/h) |
| Barrier Mass | 3,015 lb (1,368 kg) |
| Angle | 27° crabbed |
| Target | Driver side |

### Test Setup - Pole
| Parameter | Value |
|-----------|-------|
| Speed | 20 mph (32 km/h) |
| Pole | 254 mm diameter |
| Angle | 75° oblique |
| Target | Driver side |

### Dummy & Instrumentation
| Position | ATD |
|----------|-----|
| Driver | ES-2re (MDB) / WorldSID (Pole) |
| Rear | SID-IIs 5th female |

### Star Rating
| Test | Weight in Overall |
|------|-------------------|
| MDB | Combined with pole |
| Pole | Combined with MDB |
| Overall | Single side rating |

**Image:** `assets/iihs_side_barrier.jpg`

---

## Euro NCAP MPDB (Mobile Progressive Deformable Barrier)
**Euro NCAP** | Introduced: 2020 | Full Vehicle Crash Test

### Purpose
Simulates a head-on crash between two vehicles of similar size. Unlike fixed-barrier tests, this measures the test vehicle's "aggressivity" - how much damage it inflicts on the other car.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Test Vehicle Speed | 50 km/h (31 mph) |
| Trolley Speed | 50 km/h (31 mph) |
| Overlap | 50% |
| Trolley Mass | 1,400 kg (3,086 lb) |
| Barrier | Progressive deformable face |

### Dummy & Instrumentation
| Position | ATD |
|----------|-----|
| Driver | THOR-50M (advanced frontal dummy) |
| Rear | Q6 and Q10 child dummies |

### THOR-50M Advantages
| Feature | Benefit |
|---------|---------|
| Multi-point chest | More accurate rib loading |
| Instrumented abdomen | Detects abdominal injury |
| Flexible spine | Better kinematics |
| Deformable face | Facial injury assessment |

### Unique Assessment: Compatibility
| Measure | Purpose |
|---------|---------|
| Barrier Deformation | How much damage test vehicle caused |
| Deformation Pattern | Was damage concentrated or distributed? |
| Compatibility Penalty | Aggressive vehicles penalized |

### Rating Contribution
- Occupant protection scores
- Compatibility modifier (can reduce score)
- Child occupant scores

**Image:** `assets/thor_dummy.jpg`

---

# SECTION 4: PEDESTRIAN PROTECTION

## Tests in This Section:
1. Euro NCAP Pedestrian - Legform Impact
2. Euro NCAP Pedestrian - Headform Impact
3. Euro NCAP AEB Pedestrian/Cyclist

**Pedestrians account for ~17% of global road fatalities. These tests drive vehicle design changes like raised hoods, energy-absorbing structures, and active safety systems.**

---

## Euro NCAP Pedestrian - Legform Impact
**Euro NCAP** | Introduced: 1997, Updated Multiple Times | Component Test

### Purpose
Evaluates bumper design for pedestrian leg injuries. When a vehicle strikes a pedestrian, the bumper typically contacts the leg first, causing knee and lower leg injuries.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Impactor | Flexible lower legform |
| Impact Speed | 40 km/h (25 mph) |
| Target Area | Front bumper |
| Test Points | Multiple locations across bumper width |

### Impactor Specifications
| Component | Specification |
|-----------|---------------|
| Upper Leg Mass | 8.6 kg |
| Lower Leg Mass | 4.8 kg |
| Total Mass | 13.4 kg |
| Knee Joint | Deformable, instrumented |

### Instrumentation
| Measurement | Sensor |
|-------------|--------|
| Knee Bending Angle | Rotary potentiometer |
| Knee Shear | Displacement transducer |
| Tibia Acceleration | Accelerometer |
| Tibia Bending | Strain gauges |

### Injury Criteria
| Metric | Higher Performance | Lower Performance |
|--------|-------------------|------------------|
| Knee Bending | ≤ 15° (green) | ≥ 21° (red) |
| Knee Shear | ≤ 3.5 mm (green) | ≥ 6.0 mm (red) |
| Tibia Acceleration | ≤ 150g (green) | ≥ 200g (red) |

**Image:** `assets/euroncap_headform.png`

---

## Euro NCAP Pedestrian - Headform Impact
**Euro NCAP** | Introduced: 1997, Updated 2023 | Component Test

### Purpose
Evaluates hood and windshield design for pedestrian head injuries. The hood surface and windshield base are where pedestrians' heads typically strike.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Impact Speed | 40 km/h (25 mph) |
| Impactor | Adult headform (4.5 kg) / Child headform (3.5 kg) |
| Target Area | Hood surface, windshield base |
| Test Points | Grid of impact locations |

### Headform Specifications
| Type | Mass | Diameter |
|------|------|----------|
| Adult | 4.5 kg | 165 mm |
| Child | 3.5 kg | 130 mm |

### Instrumentation
| Channel | Sensor |
|---------|--------|
| Head X-acceleration | Accelerometer |
| Head Y-acceleration | Accelerometer |
| Head Z-acceleration | Accelerometer |
| Resultant | Calculated |

### Injury Criterion
| Metric | Good (Green) | Adequate (Yellow) | Poor (Red) |
|--------|--------------|-------------------|------------|
| HIC₁₅ | ≤ 650 | 650 - 1000 | ≥ 1700 |

### Hood Design Implications
- Raised hoods (space for deformation)
- Energy-absorbing hinges
- Pop-up hood systems (deploy on impact)
- Soft hood inner structures

**Image:** `assets/euroncap_headform.png`

---

## Euro NCAP AEB Pedestrian/Cyclist
**Euro NCAP** | Introduced: 2016 (Pedestrian), 2018 (Cyclist), 2024 (Night) | Track Test

### Purpose
Evaluates active safety systems that detect pedestrians and cyclists and automatically brake to avoid or mitigate collisions.

### Pedestrian Test Scenarios
| Scenario | Code | Description |
|----------|------|-------------|
| Adult Crossing | CPFA | 50th percentile adult, far-side crossing |
| Adult Crossing | CPNA | 50th percentile adult, near-side crossing |
| Adult Longitudinal | CPLA | Adult walking along road edge |
| Child Running | CPNC | Child darting from behind obstruction |

### Cyclist Test Scenarios
| Scenario | Code | Description |
|----------|------|-------------|
| Cyclist Crossing | CBFA | Cyclist crossing from far side |
| Cyclist Longitudinal | CBLA | Cyclist in same direction |
| Cyclist Door Opening | - | Vehicle preventing door strike |

### Test Speeds
| Speed | Scenarios |
|-------|-----------|
| 20 km/h | Low speed urban |
| 40 km/h | Medium speed |
| 60 km/h | Higher speed |

### Rating Criteria
| Performance | Score Impact |
|-------------|--------------|
| Full Avoidance | Maximum points |
| Speed Reduction | Partial points |
| Warning Only | Minimal points |
| No Response | Zero points |

### 2024 Update: Night Testing
- Pedestrian detection in darkness
- Tests with low ambient light
- Evaluates sensor capability (camera vs. radar vs. LiDAR)

**Image:** `assets/euroncap_cyclist_headform.png`

---

# SECTION 5: SPORTS / HELMET TESTING

## Tests in This Section:
1. NOCSAE Football Helmet - Drop Test
2. NOCSAE Football Helmet - Linear Impactor
3. NOCSAE Lacrosse Helmet
4. Ice Hockey Helmet (ASTM/HECC/CSA)
5. FMVSS 218 - Motorcycle Helmet

**Sports helmet testing prevents catastrophic brain and skull injuries. NOCSAE standards have reduced football fatalities by over 90% since 1973.**

---

## NOCSAE Football Helmet - Drop Test
**NOCSAE** | Introduced: 1973 | Drop Test

### Purpose
Ensures football helmets attenuate head impact energy to prevent skull fracture and severe brain injury. The founding test that created modern helmet safety standards after multiple football deaths in the 1960s-70s.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Drop Height | 60 inches (152 cm) standard |
| Additional Heights | 36, 48, 72 inches |
| Headform | Humanoid (rigid) |
| Anvil Types | Flat, hemispherical, cylindrical, edge |
| Temperature | Ambient, hot (100°F), cold (14°F) |

### Instrumentation
| Channel | Specification |
|---------|---------------|
| Headform Accelerometer | Triaxial |
| Sample Rate | ≥ 10,000 Hz |
| Filter | CFC 1000 |

### Injury Criterion: Severity Index (SI)
$$SI = \int_0^T a(t)^{2.5} \, dt$$

| Condition | SI Limit |
|-----------|----------|
| New Helmet | SI < 1200 |
| Recertified | SI < 1200 |
| Single Impact | Peak < 1200 |

### Test Sequence
| Drop | Location | Height |
|------|----------|--------|
| 1-4 | Front, side, rear, top | 60" |
| 5+ | Random locations | Varies |
| Conditioning | Multiple impacts | Per protocol |

### Historical Impact
- Pre-1973: 32 football fatalities per year (average)
- Post-standard: Reduced to ~3 per year (90%+ reduction)

**Image:** `assets/hybrid_iii_family.jpg` (headform concept)

---

## NOCSAE Football Helmet - Linear Impactor (Pneumatic Ram)
**NOCSAE** | Added: 2016 | Ram Impact Test

### Purpose
Evaluates helmet performance under oblique (glancing) impacts that cause rotational acceleration - linked to concussions. Supplements drop tests to address rotational brain injury.

### Test Setup
| Parameter | Value |
|-----------|-------|
| Impactor Type | Pneumatic ram |
| Ram Mass | ~13 kg |
| Impact Speed | 5.5-9.3 m/s (varies by test) |
| Impact Locations | Multiple angles |
| Headform | Hybrid III head/neck |

### Instrumentation
| Channel | Measurement |
|---------|-------------|
| Linear Acceleration | 3-axis accelerometer |
| Rotational Acceleration | Angular rate sensors |
| Rotational Velocity | Calculated |

### Key Measurements
| Metric | Significance |
|--------|--------------|
| Peak Linear Accel | Brain injury risk |
| Peak Rotational Accel | Concussion risk |
| Peak Rotational Velocity | Strain on brain tissue |

### Impact Configurations
| Location | Angle |
|----------|-------|
| Front | Centric and offset |
| Side | Centric and offset |
| Rear | Centric and offset |
| Oblique | Various angles |

### Rating Systems (NFL/NFLPA)
- Combined with drop test data
- Laboratory Accuracy Score (LAS)
- Publicly ranked for player selection

**Image:** `assets/atd_family.png`

---

## NOCSAE Lacrosse Helmet
**NOCSAE** | Standard: ND041 | Drop Test + Projectile Impact

### Purpose
Protects against both collision impacts (player-to-player, ground) and ball impacts (lacrosse ball at high speed). Combines impact attenuation with projectile protection.

### Drop Test Setup
| Parameter | Value |
|-----------|-------|
| Drop Heights | 60, 48, 36 inches |
| Headform | Humanoid |
| Anvil Types | Flat, hemispherical |
| Faceguard | Tested attached to helmet |

### Ball Impact Test
| Parameter | Value |
|-----------|-------|
| Projectile | Lacrosse ball (NOCSAE spec) |
| Ball Speed | 45 mph (20 m/s) |
| Impact Locations | Multiple on faceguard and shell |

### Instrumentation
| Channel | Specification |
|---------|---------------|
| Head Acceleration | Triaxial |
| Sample Rate | ≥ 8,000 Hz |
| Filter | CFC 1000 |

### Injury Criteria
| Test | Limit |
|------|-------|
| Drop SI | < 1200 |
| Ball Impact SI | < 1200 |
| Faceguard Penetration | None allowed |

### Men's vs Women's
- Men's: Full helmet with faceguard
- Women's: Historically only goggles (changing)
- Different standards apply

**Image:** `assets/atd_family.png`

---

## Ice Hockey Helmet (ASTM/HECC/CSA)
**HECC/CSA/ASTM** | Multiple Standards | Drop Test + Puck Impact

### Purpose
Protects against falls (hitting ice/boards), collisions (player-to-player), and puck impacts (frozen puck at 100+ mph). Must also allow for facemask/cage integration.

### Standards Landscape
| Standard | Organization | Region |
|----------|--------------|--------|
| CSA Z262.1 | CSA Group | Canada |
| ASTM F1045 | ASTM | USA |
| HECC | Hockey Equipment Certification Council | North America |
| CE EN 1077 | European Committee | Europe |

### Drop Test Setup
| Parameter | Value |
|-----------|-------|
| Drop Heights | 1.5 m, 2.0 m |
| Headform | ISO/CSA specified |
| Anvils | Flat, hemispherical, edge |
| Conditioning | Hot, cold, wet |

### Puck Impact Test
| Parameter | Value |
|-----------|-------|
| Puck Mass | 170 g (official) |
| Impact Speed | 25-40 m/s (varies by standard) |
| Target | Shell and faceguard |

### Instrumentation
| Channel | Specification |
|---------|---------------|
| Linear Acceleration | Triaxial |
| Peak g | Primary criterion |

### Pass/Fail Criteria
| Test | Criterion |
|------|-----------|
| Drop (flat anvil) | Peak < 275g (CSA) |
| Drop (hemispherical) | Peak < 275g |
| Puck Impact | No shell fracture, peak g limits |
| Facemask | No puck penetration |

**Image:** `assets/atd_family.png`

---

## FMVSS 218 - Motorcycle Helmet
**NHTSA** | Introduced: 1968 | Drop Test + Penetration Test

### Purpose
Establishes minimum safety requirements for motorcycle helmets sold in the United States. Known as "DOT certification" - every street-legal helmet must pass.

### Drop Test Setup
| Parameter | Value |
|-----------|-------|
| Drop Heights | Varies by impact location |
| Anvils | Flat and hemispherical |
| Headform | ISO headforms (multiple sizes) |
| Conditioning | Ambient, hot, cold, wet |

### Test Locations
| Location | Drop Height |
|----------|-------------|
| Crown | 1.83 m (flat), 1.38 m (hemi) |
| Front | 1.83 m (flat), 1.38 m (hemi) |
| Side | 1.83 m (flat), 1.38 m (hemi) |
| Rear | 1.83 m (flat), 1.38 m (hemi) |

### Penetration Test
| Parameter | Value |
|-----------|-------|
| Striker | 3 kg pointed steel cone |
| Drop Height | 3 m |
| Criterion | No contact with headform |

### Instrumentation
| Channel | Specification |
|---------|---------------|
| Peak Acceleration | < 400g |
| Duration | Measured |

### Pass/Fail Criteria
| Test | Limit |
|------|-------|
| Peak Acceleration | ≤ 400g |
| Penetration | No headform contact |
| Retention | Strap holds |

### Comparison to Other Standards
| Standard | Peak g Limit | Notes |
|----------|--------------|-------|
| DOT (FMVSS 218) | 400g | Minimum federal standard |
| Snell | 275g (M2020) | More stringent, voluntary |
| ECE 22.06 | Complex | European, includes rotational |

**Image:** `assets/john_stapp_portrait.jpg` (pioneer who survived 46g)

---

# APPENDIX: QUICK REFERENCE

## CFC Filter Classes
| CFC | -3dB Frequency | Primary Use |
|-----|----------------|-------------|
| CFC 1000 | 1000 Hz | Head acceleration |
| CFC 600 | 600 Hz | Chest, pelvis |
| CFC 180 | 180 Hz | Structural |
| CFC 60 | 60 Hz | Gross motion |

## Common Injury Criteria Summary
| Criterion | Formula/Description | Typical Limit |
|-----------|---------------------|---------------|
| HIC₁₅ | Head Injury Criterion (15 ms) | ≤ 700 |
| HIC₃₆ | Head Injury Criterion (36 ms) | ≤ 1000 |
| Nij | Neck Combined Load Index | ≤ 1.0 |
| CTI | Combined Thoracic Index | ≤ 1.0 |
| SI | Severity Index (helmets) | < 1200 |
| V*C | Viscous Criterion | ≤ 1.0 m/s |

## ATD Quick Reference
| Dummy | Primary Use | Channels |
|-------|-------------|----------|
| Hybrid III 50th Male | Frontal | ~47 |
| Hybrid III 5th Female | Frontal (small) | ~47 |
| ES-2re | Side (FMVSS) | ~40 |
| SID-IIs | Side (IIHS) | ~35 |
| WorldSID | Side (harmonized) | ~50 |
| BioRID II | Rear (whiplash) | ~35 |
| THOR-50M | Frontal (advanced) | ~150 |
| Q-Series | Children | Varies |

## Key Standards Documents
| Document | Organization | Topic |
|----------|--------------|-------|
| SAE J211-1 | SAE | Electronic instrumentation |
| SAE J211-2 | SAE | Photographic instrumentation |
| ISO 6487 | ISO | Measurement techniques (=J211) |
| CFR 49 Part 571 | NHTSA | FMVSS regulations |
| NOCSAE ND001 | NOCSAE | Headgear test equipment |

---

**Document Version:** 1.0  
**Created:** February 2026  
**Purpose:** DTS Safety Testing Presentation Reference  
**Total Slides:** 32 (27 test modes + 5 section dividers)