CT Park Pass can be used to cover the cost of parking at state parks and forests where there is an established parking charge. The pass can also be used to cover the admission fee for two adults and four chidlren at state historical sites and exhibit centers at Dinosaur, Fort Trumbull and Gillette Castle State Parks. The pass is valid from April 19 through October 6, 2008. It is not valid for groups or vehicles carrying more than 12 passengers.