The suspect was clearly clocked before entering the 40mph limit zone.
***
If you watch the beginning of the video you see the officer slowed down and move over to right which hindered the motorist from seeing the speed sign 40 mile as the driver when by.
Every thing this officer did was premeditated!
BTW if the driver was clocked why didn’t the officer tell the driver how fast he was going?
The camera is normally activated when you turn on the code lights. So he most likely was already in a 40 zone, and saw him coming up fast from behind. If he'd taken the action you're assuming, the camera wouldn't have gone on until he pulled the kid over.