Bring the kids out to touch a big City truck on Saturday, May 21, from 9 a.m. – 1p.m. Big Truck Day takes place in the parking lot of the Baltimore Museum of Industry, 1415 Key Highway. The Baltimore City Departments of Public Works, Transportation, General Services, Fire, and Police will have their big trucks on display for all the kids (both big and small) to see, touch and sit in.