Can He ge a RDP

Yes he can apply for an RDP at an informal hearing. He should take a traffic safety course.

I got a DUI about 3 weeks ago. Small accident, noone in the truck I bumped. My record is clean, speeding ticket 5-1/2 yrs. ago

No jail likely. Suspension for 6 months if you blew, 12 if you did not. Eligible for MDDP after 30 days.

you can receive supervision twice in one year if that's what you mean.

What would happen if i got a citation while already under court supervision?

If it's reported to the authorities they may revoke the super and then your 3 month suspension on the underage becomes 6 months bc it's a conviction.

If I am sentenced to Court Supervisor for Driving on a Suspended (due to DUI) in Illinois, does that count as a conviction

No, supervision will not cause an extension of your suspension.

I have a 12 year old warrant for a dui in illinois they want me too come there and plead guilty and pay a 2500 what do you think

You should hire a Lake County attorney. If he knows what he's doing, he should be able to get a better deal

Mddp eligible during 1yr revocation from dui conviction?

No you cannot obtain an MDDP once you are revoked. However, if you have not had any other DUI offenses in the past 5 years, you are eligible to...

I am on supervision in Lake County, IL and just received a speeding ticket in Cook County, IL. Will they communicate?

Probably will not communicate but Lake could monitor your record. Unlikely but possible. Best course is get a lawyer.

Will I have Jail time in Illinois for these unpaid parking tickets?

no

Will the Illinois good behavior policy apply?

yes