There IS PLENTY of FREE parking
At The Great Scale Train Show, Timonium Maryland. 

Option one:  (Fairgrounds parking)   From Padonia Road turn right at York Rd. (3rd light) and the Fairgrounds is 1/2 mile on the right.  A new traffic light on York Road makes entry and exit from the fairgrounds much easier.  During heavy traffic periods consider Light Rail Parking...it's as close to the train show as much of the parking on the fairgrounds. 

Option two: (Light Rail Parking, walk into fairgrounds)  From Padonia Road turn right at Deerco Rd. (1st light) and Light Rail Parking is 1/2 mile on left.  From this lot you can walk directly into the Fairgrounds.  The entrance is immediately adjacent to the Cow Palace, location of most of our shows.  During periods of heavy traffic this is an excellent parking choice.  (June show is in the Exhibition Hall, a short walk beyond the Cow Palace).