South of the Tipple Pkwy intersection with Silver Birch, there’s an oil facility of some kind with a small gravel pullout lot. The only vehicle you’re ever likely to see there is a Frederick PD cruiser. This trap is less common now that there’s a stop sign at Tipple Pkwy to break up speeds, but will still occasionally be seen at night, where Frederick PD’s black vehicles are very hard to spot before it’s too late.