Bengaluru Metro’s Blue Line completes a trial run up to Doddanekkundi, marking progress on the Silk Board-KR Puram corridor. Bengaluru: Bengaluru's Metro expansion has taken another step forward with the Blue Line train completing a trial movement up to Doddanekkundi on the Outer Ring Road (ORR) corridor. The development marks progress in the testing of the long-awaited Silk Board-KR Puram Metro stretch, which is expected to ease commuting difficulties for thousands of.