It depends on the part of the state in which the vehicle is registered. I pretty sure that Prince William, Fairfax & Alexandria areas (Northern Va near DC)require emissions testing. I live about 70 miles west of DC and do not have to have the emissions tested just a yearly safety inspection. Hope this helps.
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2007 2500 4x4, SLT Mega Cab, 5.9L and 48RE, 4:10 gears, Smarty JR., 20x9 GearAlloy 711C w/ProComp AT, Line-X IBEW Local 26