20 years ago but, here are the factors I used:
1. Speed compared to the flow
3. Working traffic or on a patrol beat.
4. Working a specific location everyone gets treated the same. No one talks themselves into or out of a cite.
5. 25 zone in a residential area, everyone better than 37 gets a citation. Minimum of 1.5 times the stopping distance in a bona fide zone where kids, animals and stupid people can ride, run out or just "magically appear" in the middle of a street.
6. Red light violations
R1200RT (R1100RT gone)
Don't be the guy who needs to pee on the fence to figure out that it's electrified.