Skip to main content
Find a Lawyer

Code of Federal Regulations Title 49. Transportation § 49.563.8 Data format

Current as of January 02, 2025 | Updated by Findlaw Staff

(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

± 2 ms

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.

Previous Part of Code Next Part of Code
Back to Chapter List

Cite this article: FindLaw.com - Code of Federal Regulations Title 49. Transportation § 49.563.8 Data format - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-49-transportation/cfr-sect-49-563-8/

FindLaw Codes may not reflect the most recent version of the law in your jurisdiction. Please verify the status of the code you are researching with the state legislature before relying on it for your legal needs.

Was this helpful?

Welcome to FindLaw's Cases & Codes

A free source of state and federal court opinions, state laws, and the United States Code. For more information about the legal concepts addressed by these cases and statutes, visit FindLaw’s Learn About the Law.

Go to Learn About the Law

Latest Blog Posts

For Legal Professionals

Learn About The Law

Get help with your legal needs

FindLaw’s Learn About the Law features thousands of informational articles to help you understand your options. And if you’re ready to hire an attorney, find one in your area who can help.

Go to Learn About the Law

Need to Find an Attorney?

Search our directory by legal issue

Enter information in one or both fields (Required)

Copied to clipboard