Richard, that's a good question. Actually there's nothing in law here in illinois about trigger locks. My sure about Cook county(Chicago) though. The only thing there is here is about transporting a firearm. They must be unloaded, in a case, bag, or even wrapped, and either locked in the trunk or if up front, be in plain visible sight. Nothing under the seat etc. pistols can be stored in a glove box but still must be secured in a case and unloaded.