This field is filled out with respect to the control selected in the previous field TRAFFIC CONTROL DEVICE TYPE.
00 - No Controls is used if, at the time of the crash, there was no intent to control (regulate or warn) vehicle traffic.
01 - Device Not Functioning is used when the device is not functioning at all (e.g., signal out, sign knocked down).
02 - Device Functioning Improperly is used when the device was functioning to an extent but not as intended (e.g., red signal lamp burned out, sign twisted or obscured by vegetation).
03 - Device Functioning Properly is used when the device was functioning as intended.
99 - Unknown is used when it is unknown if the traffic control device was functioning at the time of the crash.