49 CFR 563.8 – Data format
(a) The data elements listed in Tables I and II, as applicable, must be reported in accordance with the range, accuracy, and resolution specified in Table III
Table III—Reported Data Element Format
| Data element | Minimum range | Accuracy 1 | Resolution |
|---|---|---|---|
| Lateral acceleration | At option of manufacturer | At option of manufacturer | At option of manufacturer. |
| Longitudinal acceleration | At option of manufacturer | At option of manufacturer | At option of manufacturer. |
| Normal Acceleration | At option of manufacturer | At option of manufacturer | At option of manufacturer. |
| Longitudinal delta-V | ?100 km/h to + 100 km/h | ±10% | 1 km/h. |
| Lateral delta-V | ?100 km/h to + 100 km/h | ±10% | 1 km/h. |
| Maximum delta-V, longitudinal | ?100 km/h to + 100 km/h | ±10% | 1 km/h. |
| Maximum delta-V, lateral | ?100 km/h to + 100 km/h | ±10% | 1 km/h. |
| Time, maximum delta-V, longitudinal | 0-300 ms, or 0?End of Event Time plus 30 ms, whichever is shorter | ±3 ms | 2.5 ms. |
| Time, maximum delta-V, lateral | 0-300 ms, or 0?End of Event Time plus 30 ms, whichever is shorter | ±3 ms | 2.5 ms. |
| Time, maximum delta-V, resultant | 0-300 ms, or 0?End of Event Time plus 30 ms, whichever is shorter | ±3 ms | 2.5 ms. |
| Vehicle Roll Angle | ?1080 deg to + 1080 deg | ±10% | 10 deg. |
| Speed, vehicle indicated | 0 km/h to 200 km/h | ±1 km/h | 1 km/h. |
| Engine throttle, percent full (accelerator pedal percent full) | 0 to 100% | ±5% | 1%. |
| Engine rpm | 0 to 10,000 rpm | ±100 rpm | 100 rpm. |
| Service brake | On or Off | N/A | On or Off. |
| ABS activity | On or Off | N/A | On or Off. |
| Stability control | On, Off, or Engaged | N/A | On, Off, or Engaged. |
| Steering input | ?250 deg CW to + 250 deg CCW | ±5% | ±1%. |
| Ignition cycle, crash | 0 to 60,000 | ±1 cycle | 1 cycle. |
| Ignition cycle, download | 0 to 60,000 | ±1 cycle | 1 cycle. |
| Safety belt status, driver | On or Off | N/A | On or Off. |
| Safety belt status, right front passenger | On or Off | N/A | On or Off. |
| Frontal air bag warning lamp | On or Off | N/A | On or Off. |
| Frontal air bag suppression switch status, right front passenger | On, Off, or Auto | N/A | On, Off, or Auto. |
| Frontal air bag deployment, time to deploy/first stage, driver | 0 to 250 ms | ±2ms | 1 ms. |
| Frontal air bag deployment, time to deploy/first stage, right front passenger | 0 to 250 ms | ±2 ms | 1 ms. |
| Frontal air bag deployment, time to nth stage, driver | 0 to 250 ms | ±2 ms | 1 ms. |
| Frontal air bag deployment, time to nth stage, right front passenger | 0 to 250 ms | ±2 ms | 1 ms. |
| Frontal air bag deployment, nth stage disposal, driver | Yes or No | N/A | Yes or No. |
| Frontal air bag deployment, nth stage disposal, right front passenger | Yes or No | N/A | Yes or No. |
| Side air bag deployment, time to deploy, driver | 0 to 250 ms | ±2 ms | 1 ms. |
| Side air bag deployment, time to deploy, right front passenger | 0 to 250 ms | ±2 ms | 1 ms. |
| Side curtain/tube air bag deployment, time to deploy, driver side | 0 to 250 ms | ±2 ms | 1 ms. |
| Side curtain/tube air bag deployment, time to deploy, right side | 0 to 250 ms | ±2 ms | 1 ms. |
| Pretensioner deployment, time to fire, driver | 0 to 250 ms | ±2 ms | 1 ms. |
| Pretensioner deployment, time to fire, right front passenger | 0 to 250 ms | ±2 ms | 1 ms. |
| Seat track position switch, foremost, status, driver | Yes or No | N/A | Yes or No. |
| Seat track position switch, foremost, status, right front passenger | Yes or No | N/A | Yes or No. |
| Occupant size classification, driver | 5th percentile female or larger | N/A | Yes or No. |
| Occupant size classification, right front passenger | Child | N/A | Yes or No. |
| Occupant position classification, driver | Out of position | N/A | Yes or No. |
| Occupant position classification, right front passenger | Out of position | N/A | Yes or No. |
| Multi-event, number of event | 1 or 2 | N/A | 1 or 2. |
| Time from event 1 to 2 | 0 to 5.0 sec | 0.1 sec | 0.1 sec. |
| Complete file recorded | Yes or No | N/A | Yes or No. |
1 Accuracy requirement only applies within the range of the physical sensor. For vehicles manufactured after September 1, 2014, if measurements captured by a sensor exceed the design range of the sensor, the reported element must indicate when the measurement first exceeded the design range of the sensor.
(b) Acceleration Time-History data and format: the longitudinal, lateral, and normal acceleration time-history data, as applicable, must be filtered either during the recording phase or during the data downloading phase to include:
(1) The Time Step (TS) that is the inverse of the sampling frequency of the acceleration data and which has units of seconds;
(2) The number of the first point (NFP), which is an integer that when multiplied by the TS equals the time relative to time zero of the first acceleration data point;
(3) The number of the last point (NLP), which is an integer that when multiplied by the TS equals the time relative to time zero of the last acceleration data point; and
(4) NLP—NFP + 1 acceleration values sequentially beginning with the acceleration at time NFP * TS and continue sampling the acceleration at TS increments in time until the time NLP * TS is reached.