StacksVerified U.S. regulatory reference

49 CFR §552.12

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
For purposes of this subpart, the following definitions apply:
  1. (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. (1)Sensing the location of an occupant, moving or still, in relation to the air bag;
    2. (2)Interpreting the occupant characteristics and location information to determine whether or not the air bag should deploy; and
    3. (3)Activating or suppressing the air bag system based on the interpretation of characteristics and occupant location information.
  2. (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.
  3. (c)Standard No. 208 means 49 CFR 571.208.