TollRoad Police
I can help you out a little bit, as I may not be 100 percent correct on all of it.
I can tell you they are divided up by zone.
With zone 1 starting at Lake county and zone 4 ending in Steuben county.
If they call a unit number such as (21-336) your listening to tollroad police zone 3 unit/radio id 36.
Most of their assignment is on the toll road with some exceptions.
Such as meal break, prisoner transport or county assist.
If they ramp off the toll road to help a county (traffic stop or accident) then you'll need the state police talk
groups for that county.
i.e. if their in StJoseph county then they'll switch to the district 24 dispatch channel.
Hope this helps.
