Rivnuts from Homestead, PA on 9/13/2019 7:20:45 PM:
I've ridden that road a couple of times in route to overnight lodging. It is indeed a busy highway. If you choose to do so, hopefully you have a mirror to keep an eye on the traffic coming from behind. Also, you are well advised to make yourself as visible as possible while on the road with bright colors and blinking lights. If possible, you'd be well advised to avoid rush hours on the road. Lastly, you can avoid riding it twice if you elect to ride from Leesburg to Washington on the Washington and Old Dominion Trail rather than return back to the C&O on Rte 15 from Leesburg.