49 CFR 563.7 - Data elements.

Regulations last checked for updates: Nov 24, 2024

Title 49 - Transportation last revised: Nov 18, 2024

View all text of Part 563 [§ 563.1 - § 563.12]

§ 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, during the interval/time and at the sample rate specified in that table.

Table I—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	−5.0 to 0 sec	2
Engine throttle, % full (or accelerator pedal, % full)	−5.0 to 0 sec	2
Service brake, on/off	−5.0 to 0 sec	2
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.

(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 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—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	−5.0 to 0 sec	2
Vehicle roll angle	If recorded	−1.0 up to 5.0 sec ³	10
ABS activity (engaged, non-engaged)	If recorded	−5.0 to 0 sec	2
Stability control (on, off, or engaged)	If recorded	−5.0 to 0 sec	2
Steering input	If recorded	−5.0 to 0 sec	2
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.

[73 FR 2181, Jan. 14, 2008, 73 FR 8408, Feb. 13, 2008, as amended at 76 FR 47486, Aug. 5, 2011]

authority: 49 U.S.C. 322,30101,30111,30115,30117,30166,30168; delegation of authority at 49 CFR 1.50

source: 71 FR 51043, Aug. 28, 2006, unless otherwise noted.

cite as: 49 CFR 563.7