This applies to any cop in the country.
These arrests will happen. If VA State Police will impound a cruiser and arrest the drivwr for speeding (they have), NJ will arrest officers for this.
To add, we are now in the age of body cameras, so even if they want to give a break, they may not be able to. I have found police across the country are pretty much universal in wanting to look out for other police. Except for Virginia's religious war on speed.