Metro is canceling planned track work to make way for crowds expected to attend the rescheduled dedication of the Martin Luther King Jr. Memorial, the transit agency said Monday. The initial dedication ceremony and events were postponed last month because of Hurricane Irene. Now the festivities have been rescheduled for Sunday, Oct. 16. Same ceremony, same earlier 5 a.m. opening of Metrorail to accommodate crowds, same suspension of track work. Metro had planned to work on the Red, Blue, Yellow and Orange lines. – Kytja Weir