nah. There's very little DCA traffic on Rte 1 now that the rental cars are handled on-site. There's some poor saps who will try to fill at the rip-off Exxon ($3.79!), but other than that, they go GW PArkway and Potomac Yards has no easy link to that.
From the report:
“Limiting Impacts to Reagan National Airport can be achieved with temporary traffic
control. The George Washington Parkway is not currently assumed to carry a significant
amount of southbound traffic and there is currently no exit from GWP to Route 1 between I-
395 and Slaters Lane. Cut through traffic attempting to use roadways in or adjacent to
National Airport can be discouraged and/or prevented with temporary traffic control.“
What exactly would constitute a “temporary traffic control” that would be acceptable on the airport side of things that would stop cut-through traffic from arriving near all of this? Wouldn’t anything that would stop traffic exiting southbound to get on Rt. 1 north or south or onto Crystal Drive also have to stop every other type of associated traffic, including not just rental cars but people doing pick up/drop off, ride shares, and taxis?
There’s this too:
“Traffic attempting to use George Washington Parkway to access Route 1 at the airport would use the airport access roads. Movements are currently discouraged using speed humps, constrained roadway widths, and low speed limits.“
One can easily see the traffic leaving work and headed southbound not bearing off on the exits for Clark Street or Route 1 but getting off on the parkway and exiting at the airport, especially as “low speed limits” may not be much of a deterrent as traffic crawls along every other roadway.