I think I figured it out. From what I understand this is a feature of the 0.4.7 update that allows you to encounter suspects who escaped previously from you. Why there's so many blips I'm not sure (I don't let that many people get away lol).
If you want to change the amount of time between each encounter, COPY & PASTE this line to your lspdfr.ini folder:
Ambient.EscapedSuspectEncounterInterval = enter milliseconds here
To disable the feature completely, COPY & PASTE this line to your lspdfr.ini folder: Ambient.DisableEscapedSuspectEncounter = true