A combination plate doesnt mean you can drive on the parkway in ct.they give combo plates to pickups that are more then 7500 lbs.if your pickup is under 7500 lbs then you can get a plate that cars have and drive on the parkway.years ago if you had a combo plate you could drive on the parkway no matter what but it looks like that has changed very odd.But i will calll dmv on tuesday when they open to make sure no you have me wondering too.