There are some violations that we don't nessesarily cite for but we can use for stops to investigate something else.
Let's say that I am patrolling a drug area and I spy a car that I haven't seen before. I run the plate and the address is from another part of the city. I make the block and notice that there is no front plate.
I now have a legal stop on the vehicle. From there, depending on how the stop progresses I start to find ways that I can get into the car by PC or permission. I cannot tell you how many drunks, drugs, guns and warrants I have found from a stop similar to that.
Another one is "failure to signal intent from the curb" when folks pull away from the curb after buying crack or picking up a prostitute.
It is safe to say that the transportation code is packed with violations. I could follow someone, anyone, for 5 minutes and get a violation.
That is why we have descretion.
F

