---
kind: "section"
citation: "49 C.F.R. § 552.12"
title: "49"
number: "552.12"
heading: "Definitions."
url: "https://uscodex.org/cfr/49/552.12"
---

# §552.12. Definitions.


For purposes of this subpart, the following definitions apply:

- (a) Dynamic automatic suppression system (DASS) means a portion of an air bag system that automatically controls whether or not the air bag deploys during a crash by:
  - (1) Sensing the location of an occupant, moving or still, in relation to the air bag;
  - (2) Interpreting the occupant characteristics and location information to determine whether or not the air bag should deploy; and
  - (3) Activating or suppressing the air bag system based on the interpretation of characteristics and occupant location information.
- (b) Automatic suppression zone (ASZ) means a three-dimensional zone adjacent to the air bag cover, specified by the vehicle manufacturer, where air bag deployment will be suppressed by the DASS if a vehicle occupant enters the zone under specified conditions.
- (c) Standard No. 208 means [49 CFR 571.208](/cfr/49/571.208.md).

## Notes

### Source

Source: 65 FR 30744, May 12, 2000, unless otherwise noted.

### Authority

Authority: 49 U.S.C. 30111, 30118, 30162; delegation of authority at 49 CFR 1.50.

### Source

Source: 40 FR 42014, Sept. 10, 1975, unless otherwise noted.