10-97

Government & Politics abbreviation · Police Code

10-97
Stands forCheck signal
CategoriesGovernment & Politics

10-97 stands for Check signal, a police code abbreviation.

APCO code for a test or signal check. Several agencies, including the California Highway Patrol, use 10-97 instead to mean arrived at scene.

Example: CHP unit 22-12 is 10-97 at the collision.

Usage notes

The CHP meaning is widely heard on California scanners. This variation shows why radio users must know their own agency's list. Plain-language "on scene" avoids confusion.

More police code abbreviations

  • 10-76 – En route
  • 10-77 – Estimated time of arrival
  • 10-78 – Need assistance
  • 10-8 – In service
  • 10-80 – Pursuit in progress
  • 10-9 – Repeat
  • 10-99 – Wanted or stolen indicated
  • 11-99 – Officer needs emergency help
  • 187 – Murder (California Penal Code section 187)
  • 211 – Robbery (California Penal Code section 211)
  • 459 – Burglary (California Penal Code section 459)
  • 5150 – Involuntary psychiatric hold (California Welfare and Institutions…

See all 49 police code abbreviations →