CALIFORNIA LAW ENFORCEMENT
TELECOMMUNICATIONS SYSTEM 2026 STUDY
GUIDE COMPLETE CJIS AND DISPATCH
OPERATIONS PRINCIPLES AND PRACTICE
QUESTIONS
◉ Code 2. Answer: Urgent, handle call immediately; no light or siren.
◉ Code 3. Answer: Emergency, handle call immediately; use lights
and siren.
◉ Code 4. Answer: No further assistance needed.
◉ Code 4. Answer: Adam No further assistance needed; but suspect
not in custody.
◉ Code 5. Answer: Stake out; uniformed officers stay away from
location.
◉ Code 6. Answer: Out of car for investigation at (location).
,◉ Code 6. Answer: Adam Out of car for investigation; assistance may
be required.
◉ Code 6. Answer: Charles Dangerous suspect. One-man unit stand
by for assistance.
◉ Code 7. Answer: Out of service to eat at (location).
◉ Code 8. Answer: Fire call or fire alarm at (location).
◉ Code 9. Answer: Vehicle stop at (location) (or jail break?)
◉ Code 10. Answer: Out for warrant or subpoena service at
(location) (or request clear frequency?).
◉ Code 10 R. Answer: Residence
◉ Code 12. Answer: Patrol your district and report extent of disaster
damage
◉ Code 13. Answer: Major disaster activation.
◉ Code 14. Answer: Resume normal operation.
,◉ Code 20. Answer: Notify press of newsworthy event.
◉ Code 30. Answer: Burglar alarm ringing.
◉ Code 33. Answer: Frequency is now restricted to emergency
transmissions only.
◉ Code 40. Answer: Traffic hazard exists (as used for subjects under
the influence)
◉ Code 50. Answer: Major disturbance (riot).
◉ Code 60. Answer: Parking or traffic violation or car blocking.
◉ Code 70. Answer: Service of vehicle (usually gasoline).
◉ Code 80. Answer: Found property.
◉ Code 91. Answer: Explosion.
◉ Code 99. Answer: Emergency!
, ◉ Code 100. Answer: Bomb threat (or in position to intercept
subject).
◉ Code 1000. Answer: Begin operation now.
◉ 10-1. Answer: Reception poor.
◉ 10-2. Answer: Reception good.
◉ 10-3. Answer: Stop transmitting.
◉ 10-4. Answer: Message received.
◉ 10-5. Answer: Relay message.
◉ 10-6. Answer: Busy.
◉ 10-6S. Answer: Busy, stand by at station.
◉ 10-7. Answer: Out of service at (location).
TELECOMMUNICATIONS SYSTEM 2026 STUDY
GUIDE COMPLETE CJIS AND DISPATCH
OPERATIONS PRINCIPLES AND PRACTICE
QUESTIONS
◉ Code 2. Answer: Urgent, handle call immediately; no light or siren.
◉ Code 3. Answer: Emergency, handle call immediately; use lights
and siren.
◉ Code 4. Answer: No further assistance needed.
◉ Code 4. Answer: Adam No further assistance needed; but suspect
not in custody.
◉ Code 5. Answer: Stake out; uniformed officers stay away from
location.
◉ Code 6. Answer: Out of car for investigation at (location).
,◉ Code 6. Answer: Adam Out of car for investigation; assistance may
be required.
◉ Code 6. Answer: Charles Dangerous suspect. One-man unit stand
by for assistance.
◉ Code 7. Answer: Out of service to eat at (location).
◉ Code 8. Answer: Fire call or fire alarm at (location).
◉ Code 9. Answer: Vehicle stop at (location) (or jail break?)
◉ Code 10. Answer: Out for warrant or subpoena service at
(location) (or request clear frequency?).
◉ Code 10 R. Answer: Residence
◉ Code 12. Answer: Patrol your district and report extent of disaster
damage
◉ Code 13. Answer: Major disaster activation.
◉ Code 14. Answer: Resume normal operation.
,◉ Code 20. Answer: Notify press of newsworthy event.
◉ Code 30. Answer: Burglar alarm ringing.
◉ Code 33. Answer: Frequency is now restricted to emergency
transmissions only.
◉ Code 40. Answer: Traffic hazard exists (as used for subjects under
the influence)
◉ Code 50. Answer: Major disturbance (riot).
◉ Code 60. Answer: Parking or traffic violation or car blocking.
◉ Code 70. Answer: Service of vehicle (usually gasoline).
◉ Code 80. Answer: Found property.
◉ Code 91. Answer: Explosion.
◉ Code 99. Answer: Emergency!
, ◉ Code 100. Answer: Bomb threat (or in position to intercept
subject).
◉ Code 1000. Answer: Begin operation now.
◉ 10-1. Answer: Reception poor.
◉ 10-2. Answer: Reception good.
◉ 10-3. Answer: Stop transmitting.
◉ 10-4. Answer: Message received.
◉ 10-5. Answer: Relay message.
◉ 10-6. Answer: Busy.
◉ 10-6S. Answer: Busy, stand by at station.
◉ 10-7. Answer: Out of service at (location).
