I know that WMATA in their 2040 plan included a possible pocket track east of Eastern Market. However that would cause massive disruption to the entire segment between Eastern Market & Potomac Av. Instead construct a single Turnback track aprox 150' east of the D06 interlocking of TRK1 to run roughly 2000' under 9th ST SE. This would allow for a Gap train to be parked in the tail track while allowing an additional 8 pack to turn back. This could be constructed in conjunction with phase II of the SV line and upon opening utilize it to reverse SV line service and/or core trains (I'll post that later)
Roger B.
Discovery Performance Solutions, LLC
Discovery Performance Solutions, LLC