49 CFR § 563.7 - Data elements.
(a) Data elements required for all vehicles. Each vehicle equipped with an EDR must record all of the data elements listed in table I to § 563.7(a), during the interval/time and at the sample rate specified in that table.
Table I to § 563.7(a)—Data Elements Required for All Vehicles Equipped with an EDR
| Data element | Recording interval/time
1 (relative to time zero) |
Data
sample rate (samples per second) |
|---|---|---|
| Delta-V, longitudinal | 0 to 250 ms or 0 to End of Event Time plus 30 ms, whichever is shorter | 100 |
| Maximum delta-V, longitudinal | 0-300 ms or 0 to End of Event Time plus 30 ms, whichever is shorter | N/A |
| Time, maximum delta-V | 0-300 ms or 0 to End of Event Time plus 30 ms, whichever is shorter | N/A |
| Speed, vehicle indicated | −20.0 to 0 sec 4 | 4 10 |
| Engine throttle, % full (or accelerator pedal, % full) | −20.0 to 0 sec 4 | 4 10 |
| Service brake, on/off | −20.0 to 0 sec 4 | 4 10 |
| Ignition cycle, crash | −1.0 sec | N/A |
| Ignition cycle, download | At time of download 3 | N/A |
| Safety belt status, driver | −1.0 sec | N/A |
| Frontal air bag warning lamp, on/off 2 | −1.0 sec | N/A |
| Frontal air bag deployment, time to deploy, in the case of a single stage air bag, or time to first stage deployment, in the case of a multi-stage air bag, driver | Event | N/A |
| Frontal air bag deployment, time to deploy, in the case of a single stage air bag, or time to first stage deployment, in the case of a multi-stage air bag, right front passenger | Event | N/A |
| Multi-event, number of event | Event | N/A |
| Time from event 1 to 2 | As needed | N/A |
| Complete file recorded (yes, no) | Following other data | N/A |
1 Pre-crash data and crash data are asynchronous. The sample time accuracy requirement for pre-crash time is −0.1 to 1.0 sec (e.g., T = −1 would need to occur between −1.1 and 0 seconds.)
2 The frontal air bag warning lamp is the readiness indicator specified in S4.5.2 of FMVSS No. 208, and may also illuminate to indicate a malfunction in another part of the deployable restraint system.
3 The ignition cycle at the time of download is not required to be recorded at the time of the crash, but shall be reported during the download process.
4 For vehicles manufactured before September 1, 2027, the required recording interval is −5.0 to 0 sec relative to time zero and the required data sample rate is 2 samples per second. For vehicles manufactured before September 1, 2029 by small-volume manufacturers and limited-line manufacturers, the required recording interval is −5.0 to 0 sec relative to time zero and the required data sample rate is 2 samples per second. For vehicles manufactured before September 1, 2030 by manufacturers producing altered vehicles or vehicles in two or more stages, the required recording interval is −5.0 to 0 sec relative to time zero and the required data sample rate is 2 samples per second.
(b) Data elements required for vehicles under specified conditions. Each vehicle equipped with an EDR must record each of the data elements listed in column 1 of table II to § 563.7(b) for which the vehicle meets the condition specified in column 2 of that table, during the interval/time and at the sample rate specified in that table.
Table II to § 563.7(b)—Data Elements Required for Vehicles Under Specified Minimum Conditions
| Data element name | Condition for requirement | Recording interval/time
1 (relative to time zero) |
Data
sample rate (per second) |
|---|---|---|---|
| Lateral acceleration | If recorded 2 | N/A | N/A |
| Longitudinal acceleration | If recorded | N/A | N/A |
| Normal acceleration | If recorded | N/A | N/A |
| Delta-V, lateral | If recorded | 0-250 ms or 0 to End of Event Time plus 30 ms, whichever is shorter | 100 |
| Maximum delta-V, lateral | If recorded | 0-300 ms or 0 to End of Event Time plus 30 ms, whichever is shorter | N/A |
| Time maximum delta-V, lateral | If recorded | 0-300 ms or 0 to End of Event Time plus 30 ms, whichever is shorter | N/A |
| Time for maximum delta-V, resultant | If recorded | 0-300 ms or 0 to End of Event Time plus 30 ms, whichever is shorter | N/A |
| Engine rpm | If recorded | −20.0 to 0 sec 5 | 5 10 |
| Vehicle roll angle | If recorded | −1.0 up to 5.0 sec 3 | 10 |
| ABS activity (engaged, non-engaged) | If recorded | −20.0 to 0 sec 5 | 5 10 |
| Stability control (on, off, or engaged) | If recorded | −20.0 to 0 sec 5 | 5 10 |
| Steering input | If recorded | −20.0 to 0 sec 5 | 5 10 |
| Safety belt status, right front passenger (buckled, not buckled) | If recorded | −1.0 sec | N/A |
| Frontal air bag suppression switch status, right front passenger (on, off, or auto) | If recorded | −1.0 sec | N/A |
| Frontal air bag deployment, time to nth stage, driver 4 | If equipped with a driver's frontal air bag with a multi-stage inflator | Event | N/A |
| Frontal air bag deployment, time to nth stage, right front passenger 4 | If equipped with a right front passenger's frontal air bag with a multi-stage inflator | Event | N/A |
| Frontal air bag deployment, nth stage disposal, driver, Y/N (whether the nth stage deployment was for occupant restraint or propellant disposal purposes) | If recorded | Event | N/A |
| Frontal air bag deployment, nth stage disposal, right front passenger, Y/N (whether the nth stage deployment was for occupant restraint or propellant disposal purposes) | If recorded | Event | N/A |
| Side air bag deployment, time to deploy, driver | If recorded | Event | N/A |
| Side air bag deployment, time to deploy, right front passenger | If recorded | Event | N/A |
| Side curtain/tube air bag deployment, time to deploy, driver side | If recorded | Event | N/A |
| Side curtain/tube air bag deployment, time to deploy, right side | If recorded | Event | N/A |
| Pretensioner deployment, time to fire, driver | If recorded | Event | N/A |
| Pretensioner deployment, time to fire, right front passenger | If recorded | Event | N/A |
| Seat track position switch, foremost, status, driver | If recorded | −1.0 sec | N/A |
| Seat track position switch, foremost, status, right front passenger | If recorded | −1.0 sec | N/A |
| Occupant size classification, driver | If recorded | −1.0 sec | N/A |
| Occupant size classification, right front passenger | If recorded | −1.0 sec | N/A |
| Occupant position classification, driver | If recorded | −1.0 sec | N/A |
| Occupant position classification, right front passenger | If recorded | −1.0 sec | N/A |
1 Pre-crash data and crash data are asynchronous. The sample time accuracy requirement for pre-crash time is −0.1 to 1.0 sec (e.g., T = −1 would need to occur between −1.1 and 0 seconds.)
2 “If recorded” means if the data is recorded in non-volatile memory for the purpose of subsequent downloading.
3 “Vehicle roll angle” may be recorded in any time duration; −1.0 sec to 5.0 sec is suggested.
4 List this element n−1 times, once for each stage of a multi-stage air bag system.
5 For vehicles manufactured before September 1, 2027, the required recording interval is −5.0 to 0 sec relative to time zero and the required data sample rate is 2 samples per second. For vehicles manufactured before September 1, 2029 by small-volume manufacturers and limited-line manufacturers, the required recording interval is −5.0 to 0 sec relative to time zero and the required data sample rate is 2 samples per second. For vehicles manufactured before September 1, 2030 by manufacturers producing altered vehicles or vehicles in two or more stages, the required recording interval is −5.0 to 0 sec relative to time zero and the required data sample rate is 2 samples per second.